Patriot Viper Elite II DDR4 RAM 64GB (2X32GB) 4000MHz CL20 UDIMM Desktop Gaming Memory Kit - PVE2464G400C0K

I was unsure after reading the mixed views on this ram, but it did work.To give a bit of context, the motherboard I use is Gigabyte M450 Aorus Elite, cpu is AMD Ryzen 7 3700x. I originally had 32gb Corsair ram (3000mhz, cl16) but wanted to upgrade. I looked at this Patriot Viper Elite II DDR4 32GB(2 x 16GB) 4000MHz Kit and thought it is a good deal so with a bit hesitation I thought I could give it try.The key to make it work is to change the ram frequency manually in BIOS. With 1.20v I could increase it to 36000mhz. If I increase the voltage to 1.30, I could reach 3800mhz, but then the system became potentially unstable. For example, after restarting on the second day, the computer ran into blue screen. I only later found that the voltage on motherboard was somehow returned to its default 1.20v, and so it wouldn't work with a 4000mhz setup. I decided to keep the default and run it at [email protected], so far no problems at all.The difference in ram speed is noticeable, so, so far so good.I may give an update in future if it runs into any problems.

Great stability ...didn't get the full speed but that's due to the motherboard...

I needed to upgrade the 3200mhz ram on my pc to 4k and decided to go with 64gb instead of 32 and this was the best price. My build is all white but this has added some spice back to my build. Great ram, clocks just over stated speed.

To get them to work with Asus Motherboard D.O.C.P (Profile1) at 3600mhz - I had to put them in the grey slots.

I was worried this ram would not work on my B450m motherboard, as some of the previous reviews were not great. The reality is that most buyers most likely do not bother to check if their particular motherboard will support this ram. Ryzen systems will only support 4000mhz, if you set the infinity fabric at the 2:1 ratio. Most AM4 motherboards only support 1:1 ratio (1:1 with the infinity fabric) up to 3733mhz, then you must step it down. There is only a small loss of performance at 2:1 and this memory was half price, so it's fantastic value for money.

Terrible from every aspect. Poor quality, bad timings, poor quality silicone. Heatsinks that didn't even arrive fitted straight on the module. Don't go through the pain I did with 3 sets of 64gb DDR4 before realising it's all a bad bucket. Tired on 3 new mobos and still the same results. Just stick to the brands that manufacture.

Bought these DIMMs after reading all the mixed reviews. Decided to buy anywayInstalled and set to rated speeds and couldn't get them stable. I run a ASRock Z790 PG Lightning.BIOS update sorted the compatibility issue out for me and now running stable and problem free at 4000Mhz. I'm an avid Tarkov player so a year later i've just bought another 32GB for a total of 64GB. Unsure whether i'll be able to run all 4 DIMMs at 4000Mhz but no biggie if not... they definitely work in pairs as advertised if you know how to actually manage your computer instead of plug and play.

This is supposed to be 4000mhz speed ram?However my system keeps resetting back to 2666 which is slower than my original 3200 ramSo as yet I'm not too impressed