Patriot Memory Viper Steel DDR4 RAM 16GB (1X16GB) 2400MHz CL15 SODIMM Laptop/Notebook Memory Module PVS416G240C5S

Good single channel DDR4 RAM

Tuning depends on the quality of the ram motherboard and CPU. Basically luck, now that out of the way. I have a cheap b450 and 5700x running 4850mhz - gaming. I was able to hit 56k bandwidth and 54ns latency with 3733 and tuned subtimings, going above that will degrade the performance as I have to pump more voltage into the CPU and end up throttling it's clock as its already tuned to max or else going C2/gear2. Current state is 3733 cl14 @ 1.48v

I ended up running 3600MT/s C15 G1 because my i5-12500 can't do 4000 G1 at its locked SA voltage of 0.9V. The sticks are fine and do run at 4000MT/s with the timings specified, but the CPU IMC drops down to G2, which is a slight hit on performance compared to both 3600 and 4000 G1. Can't get it stable beyond 3700 in G1, so settled for a tight-ish 3600/C15. C14 not stable, but with non-K SKUs with locked SA voltage this is going to be an issue anyway. I have no doubt the memory itself can do it, if Intel was a little less scummy with memory overclocking on the B/H series chipsets with non-K chips.The sticks are very tall and will interfere with top-mounted AIOs and some downblowing aftermarket coolers. Not sure why the black ones are so much more expensive. Not much more to say. The packaging could have been a little better - it was quite difficult to get the sticks out and I was afraid of cracking something.Overall, it's decent stuff. Nothing to really complain about, and the price is good.

I bought 2 new ram, one brand new ram is giving blue screen error, i didn't test in the return period. So after i contacted the brand. They are asking to send the product to Taiwan. This is very bad. Dont buy this productUpdate:Got replacement from importer. [email protected]

It was a clean nd fast delivery

Enable xmp then it's at 3200mhz

New ram didn't work

I see a lot of mixed reviews. It's always important to check compatibility with your motherboard and processor before getting new RAM, especially when intending to overclock it. Motherboards only support up to 2133MHz, previously 1333MHz (or there about, it's been a while since I did my research). Since any overclock has to be the user's decision, the default BIOS settings will always cap the hardware to the highest "stable" speed stated by both the hardware component itself and the motherboard. It's also possible to have RAM that will work with a system, but not be able to be utilised to its full potential due to other limitations, such as the rate that data travels on the board itself.There are plenty of websites, such as pcpartpicker, that will allow compatibility checking and flag any issues without the user needing to have any technical knowledge on the subject. There are also numerous software tools to set up overclocking, provided by motherboard retailers such as MSI, Gigabyte, ASUS, etc. Each of these tools work differently, and the various components possible in a build make for a lot of factors that these tools must consider. They aren't perfect, and are known to cause unstable settings in some cases. Sometimes it'll be a case of trial-and-error to achieve the settings which provide you with a stable, if not optimal, overclock. In such cases, it's best to find a trustworthy guide. If you've looked around in the BIOS, you'll know that there are a lot of settings; it's not always clear what each one does or whether or not it would be a good idea to modify it. The smallest change can cause your system to fail to boot, and then you need to try to reset everything and start from scratch.For me, there was no issue with the RAM, directly. I got it because I was buying a new motherboard and CPU and my then-current RAM was incompatible, and I knew my new system would be able to handle the new speeds. That said, I did need to adjust my CPU settings after I overclocked the RAM, though. 16GB of this RAM overclocked to 3773MHz well out performed my older 24GB RAM. I plan to buy it again when I find myself able to justify the cost to double up to 32GB. That's not to say this RAM is overpriced, but it is still an expense.

Amd users, You may want this because you want the fastest and also bdie etc etc the best of the best! With low latency c16 etc etc... well please, keep in mind you only need 1 pack of this for each pc, because if you do 4 (like I did) you will have to lower the frequency else it will not be stable... please read this don't be like me "oh I will find the right timing and OC them and get 4000!!! By 32gb!!! You won't your motherboard can't handle it neither latest cpu and it will be as fast as 3600, if you get one pack of this enjoy this to the fullest speed but it won't be more than 16gb, what I have done, I got 32gb to 3400 cl16 really thin timing and it works perfectly but if I had the chance I would definitely find another 16gbx2 cl16/cl17 bdie 4000/4400 as my cpu 9 5950x would smash itGreat brand BTW I wish I had 32gb 4400 instead 3400 :(

All I wanted was to have a stable 64GB RAM performing at twice the Ryzen Fabric clock which is 3600 MHz. My previous 32GB kit of Corsair Vengeance 3600 MHz was working fine in my previous mo-bo Asrock X570 Phantom Gaming-ITX/TB3. But when I upgraded to MSI X570 Carbon Max WiFi, it was unstable at that speed. I had to run it at stock clock 2666 MHz. I decided to try the Viper. Without any tweaking I put it in, set the XMP and that's it. Windows started and reported the right clock. Then I ran the MemTest86 for 7.5h. All tests passed as you can see in the screenshot. I don't like spending hours on tuning the PC to get marginal and hardly noticeable gain in performance. The priority was to get 64GB at optimized setting. So far, I'm very happy.For completeness:- motherboard as above- CPU Ryzen 5900x- Nvidia 3080Ti- Samsung 980 Pro 2TB

This pair of 3000MHz CL16 32GB DDR4 were installed alongside a pair of 3000MHz CL16 8GB Courser DDR4 dimms. The asrock z490 motherboard was manually set to 3000MHz CL16 1.35V and the whole system was subjected to a 5 hour memory test. I am happy because a) It works at 3000MHz as stated, b) It works along side a different vendors memory with similar (but not exactly the same) properties.sudo memtester 76Gwant 77824MB (81604378624 bytes)got 77824MB (81604378624 bytes), trying mlock ...locked.Loop 1/1: Stuck Address : ok Random Value : ok Compare XOR : ok Compare SUB : ok Compare MUL : ok Compare DIV : ok Compare OR : ok Compare AND : ok Sequential Increment: ok Solid Bits : ok Block Sequential : ok Checkerboard : ok Bit Spread : ok Bit Flip : ok Walking Ones : ok Walking Zeroes : ok 8-bit Writes : ok 16-bit Writes : ok

I previously left a negative review of this product as it didn’t quite perform out of the box as well as it should have, but after some emails with the manufacturer, and some of my own research I was able to eke out more performance from this RAM than was advertised.The manufacturer got back to me with the maximum safe voltage of the RAM sticks, and explained how I could choose one of my motherboard’s default RAM profiles (RAM settings that should work, but will likely run at higher voltages and looser timings than your RAM can actually do, but that’s to ensure compatibility). Picking one of the default profiles worked, and then tuning it manually to match what my RAM was supposed to do out of the box fixed the problems - but I shouldn’t have had to do this in the first place.However I did say I was able to eke out more performance. After saving the settings for how my RAM should’ve been working out of the box, I had a look at some of the information concerning this ram in particular. I used a program called Typhoon burner to find out what type of RAM chips it contains - Hynix CJR chips. I also used another program called the 1usmus DRAM calculator (this program estimates I can overclock my ram to as high as 4133MHz), to get a good idea of where to start from to get better performance out of my RAM.I have successfully clocked this RAM to 3600MHz @1.36V (up from 3400 @1.35V), and tightened the timings safely to 16-19-19-36. Whilst two of those timing numbers may be bigger than the advertised 3400 16-18-18-36, you might expect some performance loss, but since I’m running this RAM in a 3rd gen Ryzen system, the performance gain from going to 3600MHz massively outweighs this. I’ve also tightened many of the other RAM timings in the bios, (and stress tested the system) this further outweighs any performance loss, you might be concerned about. Additionally the timings are measured in clockcycles, which get shorter if you increase the speed of the RAM in MHz.To anyone who wants to take this RAM further than I have, mine also works at 3666MHz @1.37V 16-20-20-38, but I haven’t really looked into tightening that up. And it boots, but fails a stress test at 3800MHz @1.39V 16-22-22-42 - honestly I think having a cas latency of 16 was too optimistic, but I didn’t have time to try finding stable settings for it.I’m giving it 4 out of 5 stars, because it didn’t work out of the box, but the manufacturer was very helpful in helping me get it to work properly.The fact that I was able to overclock it to run better would make me consider giving it 5 stars, but I know not all users will overclock their RAM, and some users may get RAM that is ”a dud on the silicon lottery” i.e. it will only be able to perform exactly as advertised at best, and no better. So at 4 stars it shall remainMy original review can be found below:It wouldn’t run at the rated XMP profile of 3400MHz 16-18-18-36 @1.35VI’ve been able to get it to run at those timings at 3200MHz @1.36V though (using one of the default profiles on my motherboard). I’ll attempt to clock it higher manually to at least the XMP profile, but it’s quite bad that it doesn’t work properly out of the box. I expected better