Corsair CMK32GX4M4Z3200C16 Vengeance LPX 16 GB (4 x 8 GB
Corsair CMK32GX4M4Z3200C16 Vengeance LPX 16 GB (4 x 8 GB) DDR4 3200 MHz C16 XMP 2.0 High Performance Desktop Memory Kit, Black
Designed for High-Performance Overclocking
Each VENGEANCE LPX module is built from an custom performance PCB and highly-screened memory ICs. The efficient heat spreader provides effective cooling to improve overclocking potential.
” data-position=”triggerHorizontal” />Match Your SystemThe best high-performance systems look as good as they run. VENGEANCE LPX is available in several colors to match your motherboard, your other components, your case — or just your favorite colour.
” data-position=”triggerHorizontal” />Low-Profile DesignThe small form factor makes it ideal for smaller cases or any system where internal space is at a premium.
” data-position=”triggerHorizontal” />World-Famous Reliability
There’s a reason why world-champion overclockers, extreme gaming enthusiasts and high-end system builders all trust CORSAIR for high-performance memory that they can install with confidence and pride. Whether breaking records or simply building a dream gaming rig, you can count on CORSAIR memory.
Weight: | 74.8 g |
Dimensions: | 13.51 x 0.71 x 3.35 cm; 74.84 Grams |
Brand: | Corsair |
Model: | CMK32GX4M4Z3200C16 |
Colour: | Black |
Batteries Included: | No |
Manufacture: | CORSAIR |
Dimensions: | 13.51 x 0.71 x 3.35 cm; 74.84 Grams |
Upgrade from 32GB To 64GB! Delivery was fast and product came as described. 🙂
Got this to add some extra RAM to my PC and it clicked in easily and performs like a champ!
I recommend this as the best 16GB RAM available for the GA-Z170-Gaming K3 motherboard after checking the manufacturers website I found this RAM to be listed as compatible
As described, brand new Corsair vengeance 3600mhz RAM. Not tested yet but look fine.
Good performance for the price. I upgraded from 16gb to 32gb with this kit, I added it to an existing Corsair vengeance rgb pro kit. It works well, no issues. Tried overclocking and runs stable at 4000mhz cl16, but your mileage may vary. Personally I wouldn’t get ram any faster than this on ddr4
Served me perfectly for 3 years and counting of casual and gaming use, with no issues
No issue with the A320 chipset and a RYZEN 5 4500 on latest bios, job done.
Managed to get this working stable at 4000mhz at CL16 . Working good combined with Ryzen 5 5600G. Heatsinks are good and provide adequate cooling for even for slightly higher voltage than they are rated for. I have 2×8 3600mhz ki
Brought this for my sons pc as he needed more ram, and what he had in the past have him problems.
This meets the spec required, plugged straight in and away we go. No problems at all, very happy.
May not be the fastest Ddr4 but honestly, I can’t tell any difference.
Came a day early. Easy to install and works great.
Ordered this kit and the first set was DOA, worked with Amazon and they replaced the kit. Second kit arrived and worked first time after installing.
Really surprised how fast this RAM is, normally I don’t notice such things but I feel things flowing much more smoothly than the old RAM I was using, I was going to double my RAM but I don’t think I’ll put the old slow rashers in in case they hamper this new stuff.
A much-needed upgrade to my machine as 12 gigabytes just isn’t enough for what I do. Thankfully this got me to 24 running at 3400mhz with no issue!
A bit pricey but overall worth it for gaming and 3d modelling
Very easy to use and recognised by PC and have same fitted already and they work ok
Good, stable RAM. Low profile so it works well with my Mini-ITX build. There’s not more you can say. Advertised timings (Once XMP is enabled of course) and no issues.
Bought in addition of the 16gb i had to make 32gb. Simple install
Make sure to utilise as much power as possible through bios settings otherwise there will be unused power.
The ram was great for the first year or two, then things went wrong. I experienced many many blue screens (BSOD) while gaming and the games that I was playing also kept crashing. I did many different tests on my pc to try find the problem however when I did a memory test, it showed no issues. I decided to take the risk and buy new ram in hopes that it fixed my issue, and it did. Not sure how long ram sticks are supposed to last, but these ones did not last long at all.
bought this as my old ram sticks died (Just stopped working after about 2 years, not overclocked or under constant intensive use or anything) and this RAM seems to work better (its faster and more stable – pc just runs slightly smoother with it) so happy so far- hopefully this RAM stick will last more than just two years
I felt a PC needed more RAM, after hanging for a short time on a handful of occasions when I was multitasking.
I had a four stick board, but only 2 x 4 so 8Gb in place.
So I sought out the same brand and spec, these being it.
And while I could have bought two 8s (or more) to get to 16 and up and gone for a tad more speed, (Processor out of the box works at 2666 , however I won’t be overclocking, so any faster RAM would be no benefit to my build) While the benefit of 2 x 8Gb at 2666, over 4 x 4Gb 2400MHz would for this PC’s purpose go unnoticed, and it was then cheaper by half to get another 2 sticks to double up to 16Gb, which for a media (but not gaming) PC doing some multi tasking; web browsing and basic graphics work while streaming/playing video – was good enough and I have had no issues since the upgrade.
My computer already had 2 8GB sticks of DDR4 3000MHz Corsair vengeance RAM. Unfortunately that exact model number is not made anymore. Therefore finding 100% compatible RAM is difficult as it should ideally be: from the same manufacturer, the same speed and have THE SAME TIMINGS (in this case 15 17 17 35).
I spent a while trying to find the closest match to my current RAM, and stumbled across these. Looked the specs up on the corsair website and, despite some minor spec issues in the amazon description, the model number is correct (the specs are as they are listed for that number on the corsair website, specifically the timings).
The RAM timings are the 4 numbers written on the back of the stick. If you’re mixing and matching memory it can be important and it is easier if they are the same from the factory.
Work well. No issues.
Better value installing yourself than paying way over the odds for a new system with 16Gb over 8Gb an extra 300 quid for a system with 16Gb ram Vs 30 odd quid and install yourself no brainer really
Review for Corsair 178300 Vengeance LPX 16 GB (2 x 8 GB) DDR4 3200 MHz C16 for AMD Ryzen, Black.
My Motherboard supports XMP 2.0 and I had an AMD Ryzen 7 5800X. Bought 2 sets (2 x 2 x 8 GB = 32 GB).
It was easy to install and enable the XMP profile + set up the speed to 3200 MHz from BIOS.
Keep in mind that if you are not an overclocking enthusiast, 3200MHz is best for Ryzen.
This ram is a bit cheaper as most want the stuff with lights on .
As much case and mobo already has lots of lighting I thought I’d save some money .
One thing I will say is my ram does not overclock an inch .
It will stable max out at what it’s rated at .
But it is stable and works a treat , I may have just been unlucky with the batch but I would say if you have aspirations of overclocking this would not be the ram for you.
If you are looking to just use as is then it’s perfect ..
I would advise people to look at the clock speed of thier cpu and ram balancing before purchase ..
It does make a difference
Google is your friend
even though this brand presents this product as “overclockable” you have to enable XMP to actually get the advertised speed, and even though that is a form of overclocking, trying to boot into windows at 2933MHz is impossible and causes BSOD because of instability, this ram can’t cope at speeds higher than advertised even though its meant to be ‘overclockable’
I built a new computer this summer (I actually managed to get the bits I needed!) and originally specified 16Gb Ram. However my last PC was over 8 years old and I had not fully realised how much better they were today. So I ordered another pair of Corsair 8Gb sticks of Ram to bring it up to 32Gb. Easy to fit, and has proven 100% reliable so far (Gigabyte MB & Intel i5 10600KF). Been OK playing CoD Vanguard as well. Pleased with the purchase. Cost less than the Crucial Ram I originally proposed to buy as well.
I’ve built a few PCs over the last few years but usually with 16GB of RAM (for games) but the likes of warzone uses a lot of ram so I decided to put another 16GB kit into my current PC to make 32Gb. I am well aware of adding a separate kit may not always work out well as they weren’t tuned together as a kit but this worked absolutely fine with no issues. Plugged into my motherboard, bios picked it up right away with the DOCP profile with no issues and windows displayed it perfectly in task manager and cmd. Great kit (was a great price when I bought it) to allow for smoother multitasking even when playing games that take a hit on memory. Well pleased
Left a review for the last set I brought but this set as I build pcs was not good at all.
I could not use xmp or use on the right speed of 3600mhz without it being unstable the most I could go was 3200mhz which is not great when I’m a pc seller.
I did buy 4 x 8gig sticks so maybe might have been just 1 causing a prob not sure as they are brand new I had to return and buy a different brand.
So overall not great maybe just a one off problem.
I already had 16Gb of this, running DOCP as the MB set it up without issue. I picked up a further 16Gb 2nd hand, and it turned out one of the two 2nd hand sticks was bad, so new pair bought new. Only one being used at the moment (nice to have a spare). DOCP clocked in at 2998 MHz, but led to freeze ups under load (even though Memtest86 checked out). Dropping to 2933Mhz was stable. Now testing have adjusted the CAS latency to 16.X.X.X (MB set it to 15.X.X.X) and upped the voltage to 1.36V (from 1.35). Not much of an uplift, and well within margin of error, but seems to have stabilised a 3Gz frequency. Just something to watch out for.
I may drop back to 2933, with CAS 15.X.X.X and 1.35V. The difference between the two is negligible, and certainly not measurable in day to day use.
This RAM is fantastic to supplement your build providing great snappy speed. Take a look at the video for a closer look and how to enable your RAM to run at 3200mhz clock speed. It’s perfect for AMD Ryzen CPU currently using this with a Ryzen 5 3600XT on a Aorus Elite B550 Motherboard. It has amazing build quality and consists of an aluminium heat spreader for efficient dissipation of heat.
Out of the box it was running around 2100mhz, to enable it to run at it’s highest clock speed of 3200mhz you’d need to ensure your motherboard is on the latest BIOS for stability. Once this is has been done enter your BIOS and find either D.O.C.P or XMP (Depending on your motherboard). For this particular motherboard you’d need to enter Tweaker and enabled XMP selecting profile 1. Restart your PC and now your RAM is running at 3200mhz. Easy Peasy.
Overall, great RAM that does the job, it’s very easy to enable it to run at is highest clock speed. I would highly recommend.
When ordering this, I was a little concerned about compatibility with the current RAM I had in my PC (Corsair 1x16GB with a CAS latency of CL19). I didn’t need to worry at all :). This RAM works perfectly in Dual Channel mode with my current RAM, now I have 2x16GB it has definitely increased the performance of my PC.
For any gamers that are interested, here is a before and after average FPS from Call of Duty: Black Ops Cold War
(Tested on Cartel map in Combined Arms, as this is the most graphically intense map/mode)
Before: (1x16GB RAM) – Settings High/Ultra 1080p – FPS between 70-100
After: (2x16GB RAM) – Settings High/Ultra 1080p – FPS between 90-100
Having 2 sticks of RAM in Dual Channel has ironed out FPS highs and lows with my Nvidia GTX 1660 SUPER.
So far so good! I’m using it in a home server using Unraid, with 16gb of it allocated to a gaming VM with Parsec / Moonlight / Steam Link, and the remaining 16gb for Docker & a couple of Linux VMs.
2700x with a GTX 1070 for the rest of the specs. Stock RAM speed/voltage for maximum stability; the performance difference by using higher speed RAM doesn’t seem that important to me, especially when streaming the games to other devices where there’s already some latency/lag.
I paid 116.99 and am really pleased with the results on my Dell XPS 8930. I’ve now got 48GB memory in there including the 16GB,DDR4,2666MHz that came with it. I could put 64GB in but honestly haven’t had a reason to since it runs fine and I don’t want to just spend money for the sake of it.
I mostly purchased these because Corsair is a leader in the industry with a good reputation and I think the cards are good value. If you’re looking for a safe purchase with good results, I expect that this will deliver.
Pros:
– Does the job
– Super easy to install
Cons:
None
Overall:
Would recommend
I originally had 32 GB on my computer but, needed 64 GB due to virtualisation of hardware. I got on this on sale when it was roughly 400 cheaper than other offerings. I have bought Corsair lpx vengeance for many years, and it is still as reliable as it comes. it was an inexpensive upgrade and very affordable and the stability is rock solid. when the ram was inserted my computer instantly detected the upgrade. I am an old school person who still uses air cooling as it is more reliable than liquid cooling and my cooler was huge. thanks to Corsair’s low profile heatsink I was able to install it without having to remove the CPU fan. All in all this is a great upgrade and it works well with high end games that are really demanding its a good all rounder. I recommend this kit for anyone who wants an inexpensive upgrade.
Great ram to pair with a current ryzen build, I didn’t have to manually tweak the MHz with my motherboard, I just had to select DOCP profile 1 and it is nice and stable. The ram gives a noticeable improvement for my ryzen 5 2600x build, there is a bit of a boost in fps and smoothness , little less input lag occurrences across the games I have been playing as well.
I picked two of these up separately and both are working flawlessly with no issues in my current sff build. The heatshroud I’m sure is benefiting these in the compact case.C16 and in my experience great ryzen compatibility have made this the perfect choice for me at the moment – 3000mhz is doing the job. Id advise you to be sure that you have your ram speed set correctly in the bios to be sure you get the most out of this stick or just enable d.o.c.p there.
Be carefully at these corsair ram . So on amazon there are 2 different kits of 2×8 gb one prices at 79 and one priced at 84 . They are not the same even though all the specs are the same the run at different speed out of the box and both is the sets are made by a different manufacturer still corsair at the nd of the day . One is made by samsung at lower speed and one set by Nanya ( the Nanya one is ryzen ready and works perfect ) .But becuase I had 2 different sets I had multiple crashes lower performance . One of the says ryzen on the box other one says intel . Might not be a big deal but my pc went crazy with blue screen after I added another set . Not sure what’s going on but it’s a bit weird CPUID still shows me lower speed that first set .
Bought the 64GB kit and simply set the desired speed in the BIOS and it goes with no problem.
Expensive but I’ll never have to upgrade the RAM which I have done on other systems which actually does work out to be the most expensive option over time.
Now, lets have a look at those OC settings…
Had to up the voltage to 1.36 as the board was having some random issues at boot time. Stable now. Perhaps the draw on four modules or just electronic tolerances. I’m going to build another with two modules out of interest.
Further update – it was, I think, the 2103 BIOS update, looking at the forums it seems to draw down the DRAM voltage. Had a couple of BSOD and sliding up to 1.38 seems to have sorted it. Spent the last few hours running some tests and installing Office etc. Going to run a few video reencodes just so see how she does. A bit quicker to sort out than my trusty P5Q3 deluxe which is happily sitting at 1600mhz with 16GB and a QX9750 at 4.3GHX.
I already have a Corsair Vengeance 2×4 8GB memory kit, which used to be all I needed as I just use my computer as a work station. I am not a gamer so I am not interested in overclocking just stability and these have never let me down. However, I use Capture One imaging software and the demands on my computing power have gradually increased. So, buying another kit to make a total of 16GB of memory was a no brainer way of upgrading. I am pleased that the images now resolve very quickly and do not slow me down by waiting for the computer to catch up with the software.
I bought it because it’s a popular choice at the moment. Not that i know super much about computer staff but they work and they work fine. I tested it on benchmark , it’s in green ile without any “OC” so i suppose it’s ok. Ohh yes. I got it second one after week or so. I can run all games on ultra settings. So i think it works fine. Happy with product would buy it agai
Bought to upgrade my ASUA TUF B450 Gaming based system. I tried with four faster sticks but the system would only start when it was populated with 2 sticks. I have overclocked the ram to get near the spec of the previous RAM and my system has been running without hanging for 36 hours so, a great buy. especially for my system. They are low enough in profile to allow all of my RAM slots to be used with my new Prism Wraith CPU cooler. All in all a worthwhile upgrade. And by buying the RED ones I saved a reasonable slice of change.
I’ve purchased the Corsair 32GB 2x8GB 4000MHZ kit for use in a newly built video editing PC. I wanted performance I could rely on and that’s why I chose Corsair Vengeance! The motherboard I’m using is ASUS Rog Strix Z390-F Gaming, and Intel’s i9 9900KS. I have managed to use the XMP 2 Profile to run this awesome memory at 3800MHZ in dual channel mode. Using Prime95 to test, I have established this setting is stable without any voltage changes, out of the box stock. If you’re looking for great timings, this kit has what you’re looking for. Also I love the look of these on the board, stealthy yet aggressive in their appearance! Would purchase again! – Jake
I am using this RAM in my Ryzen system and with the XMP enabled in the bios I have been running them at 3000Mhz reliably on an Asrock B450 motherboard.
16GB is ideal for gaming and I have noticed a performance gain moving from 8 to 16GB of vengeance.
The RAM stays cool with their metal heat sync covers and have been running reliably for me for a couple of weeks now.
Corsair is my go to brand of RAM and I have always had a great experience with using them over the competition.
Highly recommended for gamers looking to spice up their rig with some high speed RAM.
Before I write some numbers down lets get the basics out of the way, easy to install like all ram just push and play. Changed motherboards ram speed to 3200 and it worked straight away, tried going above this and the machine wouldn’t boot.
Now before I installed this, I benched CS:GO using ulletical’s benchmark and averaged around 150 at 2400mhz dropping to 130 on the worst run. Shut down the PC swapped to this ram at 3200mhz and averaged around 170 – 180. This is quite obviously a vast improvement for myself, but should be taken with a grain of salt with all the variance that is present with systems and testing.
Chrome and firefox also love this addition.
So I last bought 4 of these 2 years ago and got the fright of my life when my custom gaming rig started throwing up errors and wouldn’t boot. At first I thought my water cooler had leaked and neighed like a horse. A quick search later and I found it must be either the PSU or RAM. I eliminated the PSU since it’s Corsair’s top of the line and beefy one. Stuck a voltmeter in between theanyway and the plug and power socket – was drawing the right amount of current as expected. Took RAM sticks out one by one until I found two defective ones. Look at past orders – low and behold, it’s died just outside of the return period. I’ve had RAM last better in the past and I don’t really use my PC much except occasionally at weekends. They look great and work as expected, just not sure the reliability is fully there.
I got the 16gb (2×8) 3000mhz kit as an upgrade, as I was previously on 8GB RAM clocked at 2133mhz when I originally built my PC. Whilst my current mobo doesn’t go over 2133mhz (unless in XMP for 2400 I think, I leave it off anyway), the dual channel support is still there. Overall, even though I’ve only used this new kit for half a day, they are very smooth and much better than the 8gb I was on.
Before, when I was playing games such as Battlefront 2 or Black Desert Online, I would suffer huge stuttering when in areas with a lot going on, due to the nature of the games, however I’m able to play them just fine now with the extra 8gb of RAM compared to before, even if I’m not fully utilizing the speeds offered by the sticks. Figured it would better to get these sticks with these speeds, for when I eventually make the jump to Ryzen and upgrade the mobo, to adjust for the higher RAM speeds used by Ryzen and the recent-ish price drops to RAM in general making the purchase more viable.
Anyway, before I get derailed too much, great sticks, easy installation, prompt delivery from Amazon. I’d probably reccommend 16gb of RAM, over just 8gb, if you’re planning on playing recent games (or VR games) as 8gb just isn’t enough anymore.
I can boot only using 2133 frequency ,when I hoped to get at LEAST 2400 Mhz thats rated.
Before this purchase I used practicaly same RAM Vengeance LPX with same timings and rated 2400 mhz but 2×8 GB.
I had no problem using from start,and could even take it to 2800 MHz no problem.
This is really a dissapointment for me at the moment,I am trying to get it up at rated speed but no matter what I do in bios at the moment doesnt help…I posted a photo of my “old” ram ,you can see it is essentially same model.
If I manage to fix it soon I will change this review,if not I will try to return or exchange for something else at the seller.
Edit, after update of my BIOS and setting tRFC timing to 421,memory works just fine,so it was actually my fault for it not booting at 2400MHz.
Thanks to seller for fast shipping and delivery,+ technical support to fix my issue 🙂
final rating 10/10
This review is about the CORSAIR Vengeance LPX-16gb RAM 3000 Mhz (C15)
These were coupled with an Ryzen 5 2600 and a MSI B450 Tomahawk. It worked greatly and without any problems, was easy to input into the motherboard and came packaged neatly and safely. It also looks good in your system with a black or white setup although it doesn’t come with RGB.
This informational review is aimed for new PC builders. Therefore, if you are already knowledgeable in RAM there is no need to continue.
1. (C15) refers to CAS Latency, which is how quickly your RAM responds to a command, you really won’t see a difference at all between CL15 and CL16 although you will notice C15 is considerably more expensive as it is better in synthetic bench marks but you wouldn’t notice this in real world performance. Therefore get whichever one you want.
2. Mhz refers to how fast the RAM performs. The speed of a computer processor, or CPU, is determined by the clock cycle. Computer processors can execute one or more instructions per clock cycle, depending on the type of processor. Therefore the higher Mhz the Ram outputs, the faster the RAM can perform tasks. (3000-3200Mhz is considered the sweet spot for mid-higher end workstation + gaming), any beyond this is overkill for your average needs and unecessary money spent.
3. GB refers to Gigabytes: Some computer programs, especially Windows, uses RAM to swap frequently loaded programs back and forth, it makes the computer seem to run faster. Therefore in simple terms, the higher the GB the more tasks your system can perform at once before it starts slowing down your machine.
Recap: What you want in your system for your needs
1. Higher GB
8GB is standard for workstation purposes and light gaming.
16 GB recommended/a must for medium to higher end gaming.
32 GB is for higher end computers, and unecessary unless you are doing a very heavy work load at once which requires it.
(More GB = More tasks your machine can run at once)
2. Mhz
(3000-3200 is the sweet spot, nothing more is required unless necessary for your use).
3. Brand
Brands make their ram different. However Corsair is known for its tech, are very reputable and trustworthy, therefore they are a company you can depend on that make good quality products.
4. (CAS Latency)
Latency won’t be an issue, get which ever one is labelled cheaper as long as it has any of the above I mentioned.
Happy building!
Bought Corsiar standard memory 2600mhz 2 sticks 8gb each so it balanced across the DIMM sockets installed on a MSI x470 motherboard running a ryzen5 processor, MSI GTX 1070 gpu. Installed with no issues put together in under 20 minutes and booted up and windows 10 installed within the hour. Bullet proof ram you can go for faster speeds up to 3600mhz for this motherboard but against speed your not going to notice any benefit unless your a speed geek more interested in measuring speed over playing games or even video editing better adding more sticks . my opinion of Course. Ensure you check out what RAM your processor can manage before buying bigger ram only to find out that your processor cant use it (wasted money and hours trying to tweak it to get the stated speed out of it), and ensure the motherboard can manage speed too otherwise you will freezing issues.
he start of 2018 was something special for me. i had acquired enough money to finally get into building my own rig. and going from a i3 540 @ 3.02GHz | 4GB of ram and a GT640. this was the biggest upgrade to date and with the arrival of 8th gen intel processors the i5 seemed like a good entry point.
my build was originally meant to be
intel i5 8600k
8GB RAM
Nvidia GT780 (gifted by caring community member)
Corsair 750m PSU
and just 3 months in with the 8GB of ram 1 stick had failed on me. noticing that i was caping out on ram super quick upon start up as well as in games performance had crippled. i might have just got a bad batch or something but no harm overall to the PC. i upgraded 2×8 sticks as ram prices started dropping and inventory was quickly running out. and have had the new sticks for nearing 9 months now. and its all great and dandy.
no complaints other than the value for money which at the time for me was quite expensive compared to what its at now. but hey you win some you lose some. either way im happy with how things have turned out!
I recently made a massive PC upgrade/overhaul, moving from an FX-8320 and FXA-990 mobo…to a R7 2700X and Gigabyte Aorus X470 Ultra Gaming. With that said, I also had to retire my 32GB HyperX DDR3 1600MHz CL10 RAM. I couldn’t downgrade in RAM capacity, and intend to max out my mobo’s DIMMs at some point. Judging by the “Verified Purchase”, and this review, you can guess what I ultimately went with.
Out of the box, you’ll expect, and might be confused, as to why the RAM is running at 2133MHz. This is pretty standard. So you’ll definitely need to go into your UEFI BIOS and select “XMP Profile 1” to ensure it’s running at its best. It might vary on how/where you need to enable that. But I’ve decided to attach some images from my BIOS.
Since I don’t have other DDR4 to compare this to, I can’t offer benchmarks. All in all, it’s low profile, and even if it isn’t RGB–it still looks great.
There isn’t much you can say about this stuff really. It does what it’s supposed to do. At the moment it’s great value for money and is about the best price/performance for intel 7 and 8 series systems.
There are other, different frequency RAMS, but offset by worse timing and higher prices so overall tiny performance increases at higher cost. If you really want the next step up, another two percent performance, then you have to increase your spend by 20% or so and buy 3200Mhz CAS 14.
Do remember that there is no guarantee that this will work at the advertised settings in your PC. This is not a limitation of the RAM, rather of your PC. The default setting for the RAM is 2133, and every system will run at that speed but the moment you go above that frequency the rest of your system may well fail. To try full speed you need to enable XMP in the BIOS. If that doesn’t work then it’s down to you to tweak the settings until you find some that works. No guarantees. Series 7 is guaranteed to work at 2133 and series 8 at 2666, but most will work at 3200. 3000 and 3200 are popular and performance difference between them is pretty much unmeasurable so just buy which is cheaper.
On XMP I discovered my motherboard was going just a bit high on the voltages so I actually set everything up manually and slightly lowered the voltage. In fact it was 100% happy at 1.3V.