Corsair RM850, RM Series, 80 Plus Gold Certified, 850 W Fully Modular ATX Power Supply – Black
Ready for Modern Standby
Modern Standby is an upcoming feature for Windows 10 that vastly improves your PC’s sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast and maintain a network connection during sleep to continue downloading updates and receive notifications.
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80 Plus Certified
The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill.
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105°C – Rated Capacitors
Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply.
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Zero RPM Fan Mode
The RM Series’ cooling fan doesn’t spin until you need it, for near-silent operation at low and medium loads.
Tuned for Low Noise Operation
A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it’s needed, resulting in virtually silent operation.
Compact Size
A 160mm-long casing ensures an easy fit in almost all modern enthusiast PC cases, providing more space for cable management and airflow in your chassis.
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Ten-Year Warranty
Corsair provides a ten-year warranty on all RM Series power supplies; your guarantee of reliable operation that will last across several system builds.
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Multiple-GPU Ready
PCI-E connectors to power dual or triple (RM850 only) GPUs for your most ambitious PC gaming builds.
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Fully Modular Cables
Use only the cables you need for quick and easy installation, simplifying routing and cable management. Store your unused cables in the included cable bag.
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Carbide 275R Tempered Glass Mid-Tower Gaming Case
Corsair Carbide Series 275R is a compact mid-tower ATX case that matches minimalist design and a beautiful tempered glass window with a straightforward interior layout and versatile cooling options.
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Premium PSU Cables Pro Kit Type 4 Gen 4
Corsair Premium Individually Sleeved Type 4 Gen 4 Pro Kit includes everything you need to fully upgrade your PSU cables to flexible paracord sleeve, available in seven different colors and patterns.
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Premium PSU Cables Starter Kit Type 4 Gen 4
Corsair Premium Individually Sleeved Type 4 Gen 4 Starter Kit includes the essential selection to upgrade your PSU cables to flexible paracord sleeve, available in seven different colors and patterns.
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Carbide 678C Low Noise Tempered Glass ATX Case
Corsair Carbide Series 678C is a mid-tower ATX case optimized for quiet operation, blending sophisticated style and a plethora of versatile cooling and storage options.
| Weight: | 998 g |
| Dimensions: | 30.2 x 21.4 x 12.9 cm; 997.9 Grams |
| Brand: | Corsair |
| Model: | CP-9020196-UK |
| Colour: | Black |
| Batteries Included: | No |
| Manufacture: | Corsair |
| Colour: | Black |
very quiet fa
very easy install +modular so its very easy to cable manage with this psu
Really nice psu
Not much to say about it besides it being fully modular (I would prefer it to be partially modular tho). 650W is enough for most of the starting GPU + CPU combos
Good budget PSU
Reliable, quiet and easy to install. Fully modular is very nice to save on space taken up by cables. Would definitely recommend.
Silently working best for last 18months and counting... Nice choice
Silently working best for last 18months and counting… Nice choice
Value for money
This was bought for my sons pc as he wanted to upgrade I didn’t install it but it was recommended he get this one as if he ever wants to upgrade in the future this power supply has all the ports he needs but as I don’t know much about it I can’t comment on the workings of it but it hasn’t gave any issues and the pc is working 100% and is operating all the bells and whistles he needs in the upgrades
Efficient, quiet and dependable.
After my previous psu wrecked my motherboard, I replaced it with this Corsair Rm850 and after a few weeks I can happily say it has worked well and I am impressed with it.
Its quiet and runs well
Had it for a few months now and have not even seen one issue on my custom build, i use the 750w version and the black cables are a nice addition, although it would be nice for some sata cables that dont have multiple connections.
As advertised
Does what it needs to.
Easy to fit, handy to have wiring that can be selected for what you require rather than one large loom.
Wiring seems well made and connectors to.
As advertised
Does what it needs to.
Easy to fit, handy to have wiring that can be selected for what you require rather than one large loom.
Wiring seems well made and connectors to.
well built power supply...only downside is it has only two pcie cables..this being expensive psu i expected two more pcie cables...now i have to buy them again from corsair website
well built power supply…only downside is it has only two pcie cables..this being expensive psu i expected two more pcie cables…now i have to buy them again from corsair website
Does the job well!
I don’t have any complaints really. It does what it’s supposed to, cables are nice and it’s easy to install.
Great value.
I should have purchased one of those PSU’s a long time ago. Worth every penny.
Awesome Absolutely worth the money. I have a lot of voltage fluctuations in my area and this works great to keep all components in my pc safe and it has ample power for the pc I've built...
Awesome Absolutely worth the money. I have a lot of voltage fluctuations in my area and this works great to keep all components in my pc safe and it has ample power for the pc I’ve built…
damn it make some noise
i had non modular psu 650w i cant even hear how it was working now it feels like im inside airplane whit new 750w dont know what the hell is going on 😀
Works
Dead easy to put in and there is no nose coming from it and great value for money
A Good Power Supply
I fitted the RM850 in August this year to my main machine, and I am really pleased with it. My second machine’s power supply was failing to start sometimes so I had no hesitation in buying this model. Fully modular and they are virtually silent.
A Good Power Supply
I fitted the RM850 in August this year to my main machine, and I am really pleased with it. My second machine’s power supply was failing to start sometimes so I had no hesitation in buying this model. Fully modular and they are virtually silent.
Works a trea
Good price. Easy to fit but I do have a full tower so make sure you have the space. Does what it says on the box.
Amazing
Really good, I bought it to power my 3070ti and it does a great job, hasn’t failed me and I’ve seen a lot of other reviews saying that it is very high quality.
Great PSU
Great power supply. Quiet, powerful and being able to chop and change the cables gives the user the minimal option for looks. Definitely buy agai
Very Good PSU
I could of gone with a 550w psu, but it wouldn’t of given me any room to update other parts and would of been loud.
So i went with the 850w psu and it great, the only let down was the box was abit damaged.
Trust me, buy this one.
The PSU is usually an overlooked component but makes a more significant impact than most people would think.
850W is a requirement for most high-end computers and going for a lower amount because “it’s cheaper and still supplies enough” is not a good excuse as it does not allow room for upgrades in the future or potentially not enough adequate power when under stress.
Additionally, the PSU is the component that all of your over components rely on, if that breaks or catches fire, so does the rest of your 1k computer, so it’s worth the extra money. Think of it as life insurance.
Corsair did a great job with this for consistent power delivery and low noise, a great purchase for a demanding computer.
Very Good PSU
I could of gone with a 550w psu, but it wouldn’t of given me any room to update other parts and would of been loud.
So i went with the 850w psu and it great, the only let down was the box was abit damaged.
Computer Power Supply
very well made strong silent and easy to fit, one feature which is space saving and allows greater cooling is the full modular design, it is nice not to have all those cables hanging around unused and in the way.
Computer Power Supply
very well made strong silent and easy to fit, one feature which is space saving and allows greater cooling is the full modular design, it is nice not to have all those cables hanging around unused and in the way.
Easy to set up!
Easy to set up and to connect to everything in your PC. I bought this as a replacement for a 350W PSU, as I upgraded my graphics card.
Fully modular means you don’t have excess cables strune about everywhere making your PC look messy, so it’s great for a tidy finish.
Very nice
In terms of noise there is none and it does the job amazingly
Brillia
I love these power supplies. As usual corsair does not disappoint and with the new no fan at low power the build is even whisper quiet.
Quiet and easy to install
So this is my first modular power supply, I had to replace my current non modular one as I upgraded my graphics card and needed more power and because my old unbranded one was cheap trash. This corsair power supply is brilliant it’s a heavy boy but that’s a good thing. The components used seem to be premium, in the sound engineering world the heavier the machine the more durable and higher quality the components are. This corsair 750w psu is so quiet I sometimes wonder is it on, that’s how quiet it is! The only issue I have is the cables, the quality could be better. But overall its a a great psu for any new builders or experienced. It’s practically plug in and play!
Quiet and easy to install
So this is my first modular power supply, I had to replace my current non modular one as I upgraded my graphics card and needed more power and because my old unbranded one was cheap trash. This corsair power supply is brilliant it’s a heavy boy but that’s a good thing. The components used seem to be premium, in the sound engineering world the heavier the machine the more durable and higher quality the components are. This corsair 750w psu is so quiet I sometimes wonder is it on, that’s how quiet it is! The only issue I have is the cables, the quality could be better. But overall its a a great psu for any new builders or experienced. It’s practically plug in and play!
Simple, modular, powerful and a vast improvement to my rig
I often hear people say bad things about corsair, but i think the build quality is bloody excellent.
I will buy more corsair in future.
This powerplant has had a marked improvement on my system.. dont hesitate.. this is the droid you are looking for.
What's to say, it's a power supply.
Easy enough to install and great to only have the cables that are needed but with plenty of spares for upgrading the pc. Very little noise. No problems so fa
Simple, modular, powerful and a vast improvement to my rig
I often hear people say bad things about corsair, but i think the build quality is bloody excellent.
I will buy more corsair in future.
This powerplant has had a marked improvement on my system.. dont hesitate.. this is the droid you are looking for.
Great for workstation pcs also
Tiny beast for my build…I have
intel i9 9820x
Mobo msi x299pro10g
GPU msi ventus 2080 8g OC
Ram 64gb ddr4 3200mhz work like a charm I am using it for gaming and full time vdo editing …Best part of psu is fans are super silent and automatically starts spinning depending on Load and also fans never starts until load reaches up to 50% I tested it with premiere pro too… Happy with i
Great PSU
A great well featured fully modular PSU, just the job for high end gaming builds.
Perfec
This power supply does the job perfectly. The fact that this power supply is fully modular means that cable management has been amazing. Plenty of cables were provided in the packaging and the fact that the cables themselves weren’t mustard cables was a bonus. Would definitely buy this product agai
Perfec
This power supply does the job perfectly. The fact that this power supply is fully modular means that cable management has been amazing. Plenty of cables were provided in the packaging and the fact that the cables themselves weren’t mustard cables was a bonus. Would definitely buy this product agai
Perfect replacement for my P6T SE Board
This is a perfect replacement for the old PSU on my ATX case with P6T SE motherboard. Only three of the four fixing screws match up with the case but that’s holding the PSU secure. All the needed cables are supplied. The PSU is modular so only the cables that are required, need to be fitted keeping the clutter down. The new PSU is a lot quieter than the old one.
Perfect replacement for my P6T SE Board
This is a perfect replacement for the old PSU on my ATX case with P6T SE motherboard. Only three of the four fixing screws match up with the case but that’s holding the PSU secure. All the needed cables are supplied. The PSU is modular so only the cables that are required, need to be fitted keeping the clutter down. The new PSU is a lot quieter than the old one.
Good
I can very, very rarely hear the fan kick in at all, even when gaming it has to be something 4k for fan to start at the lowest spin. GPU is ~130W recommended, CPU ~170W.
Easier to install than non-modular.
Puncy power supply
Probably twice the weight of the power supply that melted in our pc.
Well made, and modular cabling so you only need to plug in what you need.
One good tip is for a graphics card connection, use two separate leads to it from the PSU and not the single 6 and 8 pin lead.
Puncy power supply
Probably twice the weight of the power supply that melted in our pc.
Well made, and modular cabling so you only need to plug in what you need.
One good tip is for a graphics card connection, use two separate leads to it from the PSU and not the single 6 and 8 pin lead.
PC Power supply
Recommend to anyone that has a good pc, mine had stopped and I couldn’t figure out, then checked on “the mother of stupids” YouTube regarding the problem I was having, very easy to use as it’s modular and you just install the cables that you need. Comes complete with cables for all modules.
PC Power supply
Recommend to anyone that has a good pc, mine had stopped and I couldn’t figure out, then checked on “the mother of stupids” YouTube regarding the problem I was having, very easy to use as it’s modular and you just install the cables that you need. Comes complete with cables for all modules.
Quietest PSU I’ve owned
While not being quite as whisper-quiet as its bigger brother, the RM850x, the RM850 is still a perfectly great PSU. Even with its theoretical disadvantages taken into account (slightly lower quality capacitors and a slightly louder fan) taken into account, it still provides fantastic power delivery and is more than adequate for my Ryzen 9 3900X/Titan X Pascal system. Would highly recommend, especially for the price I paid (88).
Works as advertised
It was a good product but I wish I’d been able to find it off Amazon.
Excelle
Item was as described by the seller, well packed and delivered on time schedule. I will definitely recommend this product and the seller. Thanks to the Amazon team. You make everything from online shopping to delivery to your customers. Keep up the good attitude. Thanks one and all.
Perfect modular PSU
Silent fan
You just plug cable as much as needed for you
650W
Excelle
Item was as described by the seller, well packed and delivered on time schedule. I will definitely recommend this product and the seller. Thanks to the Amazon team. You make everything from online shopping to delivery to your customers. Keep up the good attitude. Thanks one and all.
Solid power supply with great warranty
Used this as a backup PSU when my main failed after 8 years. Worked like a dream replacing my main PSU with no issues, and it has a lengthy warranty in case of failure.
Great produc
Simple to fit and I liked the modular cable system.
Very high quality components, easy to install, and very quie
Very high quality components, easy to install, and very quie
So much quieter..
I already had a cheaper 850w power supply but after installing a GTX1080ti graphics card the unit whined under load. This Corsair unit is so much better, quiet and efficient. Great delivery too.
Grea
I own 3 Corsair PSUs of that type. Even on heavy load they stay silent 0db
Great PSU. Not so great cables
Value for money 750W 80+ Gold PSU. My only complaint is that the cables seem very stiff and cheap.
Seems good up to now
I’ve had it installed nearly a week no issues and can not hear i
First class
I had it installed professionally to keep me right but the general setup was very easy and simple, performance is top notch
It is really worth buying gold plus instead of buying other power supply. It saves your electricity and you can run longer on ups
It is really worth buying gold plus instead of buying other power supply. It saves your electricity and you can run longer on ups
It's a good psu in this price range. Solved my sudden restart issue. Stays balanced and works well in power fluctuations and heavy programs.
It’s a good psu in this price range. Solved my sudden restart issue. Stays balanced and works well in power fluctuations and heavy programs.
Quality power supply
Have had no problems. Very quiet. It is overkill for my build but nothing wrong with future proofing.
Best in class
One of the best power supplies if you have one one gpu, you can add fans and everything and still won’t ever run at full load, comes with a 10 year warranty so rest assured, very high quality materials, the fan doesn’t even spin it only spins itlf it ever gets hot, usually runs very cold
Great midrange Power supply.
Pros:
No fan spin with good passive cooling.
Fully modular with long enough flexible cables
Cons:
Proprietary connectors
Best in class
One of the best power supplies if you have one one gpu, you can add fans and everything and still won’t ever run at full load, comes with a 10 year warranty so rest assured, very high quality materials, the fan doesn’t even spin it only spins itlf it ever gets hot, usually runs very cold
Good for value
Got for my gaming pc works fine not a problem with i
Does what it should- reliably.
Never failed so far. Had it for a few months now and is in constant use. Great for cable management- which was important to me.
Great PSU for your next build
Just really happy with this PSU. Good quality, quiet (runs fanless whenever possible). Good details like labels on the connectors and cables make it easy to build with and reliable. Have one that has worked for years.
Solid power supply, good cable fit and quality, low noise.
Cheap cables, good psu. Reccomend 👍
Pretty good power supply. Has anice weight to it and is high quality. Apart from the cables. They are indeed black and there’s no ketchup and mustard but the 24 pin is really thick and stiff. Other cables are flat which also makes it a bit harder to route in some cases but some people might like it. Connectors are cheap, sharp and flimsy but at least do the job. Fan is off all the time since im barely using any of it at the moment since i don’t have the gpu i want which is actually pretty nice since it’s very quiet.
Cheap cables, good psu. Reccomend 👍
Pretty good power supply. Has anice weight to it and is high quality. Apart from the cables. They are indeed black and there’s no ketchup and mustard but the 24 pin is really thick and stiff. Other cables are flat which also makes it a bit harder to route in some cases but some people might like it. Connectors are cheap, sharp and flimsy but at least do the job. Fan is off all the time since im barely using any of it at the moment since i don’t have the gpu i want which is actually pretty nice since it’s very quiet.
This Power Supply is good but fans not start after switching on the computer. When temperature or load increase then the Power Supply fan start. All other time it remains off.
Definitely recommend
Noise level very low when under my desk just make sure you have room inside your case to house the wires that come from it bur very easy to install definitely recommend
Everything included & Looks grea
Included every wire necessary and more. Screws included too. Have yet to turn the PC on (still building) but if there’s any issues the power supply is definitely not the cause. Recommend plugging in wires before installation of PSU (Power Supply Unit)
BRAND YOU CAN RELY ON
GREAT VALUE FOR A GOLD PLUS PSU HAS MAIN POWER PLUG UNLIKE SOME OF CORSAIR MODELS AND HAS PLENTY OF CABLES IF YOU NEED THEM. MAKE CABLE MANAGEMENT EASY. CORSAIR A BRAND YOU CAN TRUST.
The RMx series was a standout from Corsair. When I got my 850x, I was astounded at the quality it offered, taking the best supplies from Seasonic head-on and often winning. It was a long way from the old TX series from CWT, which were noisy, hot and unreliable.
The RM650 is a cut-price version of the RM650x, and every x-series supply has a non-x counterpart, I think. The non-x version are based on a new platform from CWT that is compatible with hybrid sleep and fast startup, allowing PCs (with appropriate hardware) to boot in a claimed 5 seconds. Obviously fast startup eats into SSD lifetime, but that’s for another day.
The RM series use Chinese caps on both primary and secondary, and eschew the in-cable caps. This degrades ripple, going from ‘Excellent’ for the RMx series, to just ‘Acceptable’. Crossloading is similarly affected. Voltage regulation is no longer an issue with most any supply, and it isn’t a problem with this. The Sanyo Denki fan in the RMx is downgraded to Hong Hua, which is significantly worse in every single way.
I usually retain my power supplies for a very long time and the RMx series was AWOL, so I had to get this. I am planning to replace a 10-year old Seasonic X-850 (which still works great) with this, as soon as the opportunity presents itself. I have some faith in Corsair service which is hopefully still good, and the ten-year warranty is what I got it for. Would have given it a miss otherwise, it’s actually a pretty ordinary unit with a Corsair badge.
Not my first and definitely not last Corsair Power supply. Nicely manufactured, superb quality, lots of cables, works perfectly.
Great PSU.
Bought this yesterday after my 10 year old PSU decided to die on me in my 7 month old machine. It’s quiet and it’s fully modular so you can pick and choose what wires you need and it free’s up alot of space if your current/old PSU is non modular which should help keep system temps down a little bit.
Quality/build is great. Overall, it’s great and everything I needed.
Would recommend to anyone looking for a quiet & easy to install PSU.
Great PSU.
Bought this yesterday after my 10 year old PSU decided to die on me in my 7 month old machine. It’s quiet and it’s fully modular so you can pick and choose what wires you need and it free’s up alot of space if your current/old PSU is non modular which should help keep system temps down a little bit.
Quality/build is great. Overall, it’s great and everything I needed.
Would recommend to anyone looking for a quiet & easy to install PSU.
Great PSU!
Great price and comes with loads of cables so I didn’t have to buy any extras!
Good product - More than Wattage than I needed but brilliant design and quie
PC Build –
GPU: Nvidia RTX 2060S (Super) – 108%
SSD: Samsung 970 Evo Plus NVMe PCIe M.2 500GB – 297.4%
HDD: Spcc Solid State Disk 1TB – 93.2%
RAM: Corsair Vengeance LPX DDR4 3000 C15 4x4GB – 73.7%
MBD: MSI MPG Z490 GAMING CARBON WIFI
Good product - More than Wattage than I needed but brilliant design and quie
PC Build –
GPU: Nvidia RTX 2060S (Super) – 108%
SSD: Samsung 970 Evo Plus NVMe PCIe M.2 500GB – 297.4%
HDD: Spcc Solid State Disk 1TB – 93.2%
RAM: Corsair Vengeance LPX DDR4 3000 C15 4x4GB – 73.7%
MBD: MSI MPG Z490 GAMING CARBON WIFI
I'm pleasantly surprised. Easy install, figured there's be some issue but my pc powered on perfectly fine. Fixed my video card issues and I can barely hear this thing. Excellent buy.
I’m pleasantly surprised. Easy install, figured there’s be some issue but my pc powered on perfectly fine. Fixed my video card issues and I can barely hear this thing. Excellent buy.
Great PSU bough
The power supply easy to install if you are used to installing fully modular psu’s
Super easy to install.
This is really good quality and QUIET power supply, I love it!
Excellent produc
Great power supply, dead quiet, most of the time the fan isn’t even on. Modular design really helps to tidy up the cables
great power uni
his is a great quality product purchased for a new pc build worked out of the box very quiet and all the cables provided are good quality would recommend cost a bit more than nono modular units but worth it for cable manageme
great power uni
his is a great quality product purchased for a new pc build worked out of the box very quiet and all the cables provided are good quality would recommend cost a bit more than nono modular units but worth it for cable manageme
Excellent Fully Modular PSU
Bought this to replace a ten year old Corsair VX450. Easy to install even the ATX connector is modular on this one. Fan runs based on temperature, as my PC is not for full on gaming, I don’t think it has had to run yet.
Fully Modular, Slick and Great Power.
Great Box, Easy to Connect but I would love a proper manual that talks about cable for the parts. My biggest concern as a first time builder was the power and the plugs but it just handles it well. I thought 750W maybe be high but it just works and I believe I can have 2 GPUs running with the same Power supply.
Power Supply worth the money
Definitely worth the extra money to go fully modular. Being able to choose which cables are necessary leaves a lot of extra room in the case for airflow.
Quiet and reliable
Amazing product and silent – fan only kicks in when gaming eith rtx 3070 even then its sile
Good value for money
Does the job for a good price, cables aren’t braided so not the most attractive but can’t argue for the price, fully modular and 80+ Gold.
Psu is good. Bit expensive here I think. Should get cheaper offline.
Psu is good. Bit expensive here I think. Should get cheaper offline.
When you buy Corsair you expect quality. They dont skimp on that with this. The 650 watt is enough power for most builds with room for upgrades in your system. It’s quiet to the point of your unsure if it’s running even under heavy load you can hear a small whirl. But thats it.
It’s worth spending a bit more on a modular design PSU. For many reasons, but for me it helps to keep your cable management clean and tidy.
I’ve installed this into a mid size ATX case. Which it fits with easy with plenty of room. It’s not a big unit this so I’m sure it could fit easily into smaller case, but always check the dimensions first.
Comes with a set of cables which is great. However, I felt the quality of the connectors seemed a little cheap, not to bad but not what I expected. But thats me just being a bit picky.
Overall. Not a cheap unit but not expensive either. So a good PSU for your money.
When you buy Corsair you expect quality. They dont skimp on that with this. The 650 watt is enough power for most builds with room for upgrades in your system. It’s quiet to the point of your unsure if it’s running even under heavy load you can hear a small whirl. But thats it.
It’s worth spending a bit more on a modular design PSU. For many reasons, but for me it helps to keep your cable management clean and tidy.
I’ve installed this into a mid size ATX case. Which it fits with easy with plenty of room. It’s not a big unit this so I’m sure it could fit easily into smaller case, but always check the dimensions first.
Comes with a set of cables which is great. However, I felt the quality of the connectors seemed a little cheap, not to bad but not what I expected. But thats me just being a bit picky.
Overall. Not a cheap unit but not expensive either. So a good PSU for your money.
Does the job.
Doing a great job of supplying stable power so far. Running a 5600X and 3070..spot o
Good
Easy install just some of the cables where not long enough for powing the PSie and the graphics card with a single cable
I recently build my first PC, and went kinda hard on it, got a AMD Ryzen 9 and a EVGA 3070 GPU a nice motherboard and the PSU can handle with ease, easy to wire and close to no noise coming from i
I recently build my first PC, and went kinda hard on it, got a AMD Ryzen 9 and a EVGA 3070 GPU a nice motherboard and the PSU can handle with ease, easy to wire and close to no noise coming from i
Impressive
Great item never had a problem yet and I’ve got a lot units running from power unit. still got room for more well impressed!!