Question OCCT founds RAM errors, but MemTest86 found none ?

Jan 7, 2025
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Hello,

I bought a new RAM kit Kingston FURY 16GB KIT DDR4 3600MHz CL17 Beast Black RGB (KF436C17BB2AK2/16) and I already had in my PC the older version of this kit KF436C17BBAK2/16. These 2 kits have the same clock speeds, timings and everything so I thought it wont be a problem to got that new kit for my PC, because the older version is no longer available.

I wanted to play some games and my PC started crashing and from the beginning I thought it is some software error, but then I remembered I got these problems when I installed my new RAMs into my PC, so I started digging into it and found software OCCT to test the stability of my device and it found memory errors, so I then found program MemTest86, booted it from my USB and ran test of my memory, but afted maybe 4 hours it didnt find any errors. I didnt try removing that kit yet. But when I turned off in BIOS memory profile so my memory speed wont be 3600Mhz, but 2400Mhz, OCCT found no errors. Is there something that I can do instead of buying a new kit?

Other components:
CPU: AMD Ryzen 5600X
GPU: Gigabyte GeForce RTX 3070 VISION OC 8G
RAM: as shown at top of post
Motherboard: Asus PRIME B550M-A

Thank You and sorry for my english.

EDIT
Yeah and btw. the errors in OCCT starts popping around 10 minutes while testing.
 
I would run memtest86+ rather than memtest86 unless you are using the paid version of memtest86. There have been new releases of both packages since I looked at this in detail but the "+" version is open source where the non "+" version has a few tests that are only in the paid version. I think you get a couple more free tests in the "+" version.

Either way I would boot the USB and let it run overnight with the memory set to your fastest settings. If you get no errors then just use it and see if you get any crashes in windows.

Generally the testing software is much more intensive than anything windows will do.

In the worst case having more memory even if you have to drop the speed to 2400 will improve the performance more than running 1/2 the memory at the higher clock speed.
 
Did you just add the new kit to the existing for a total of 4 memory modules?

If so this may very well be the problem because not all CPUs will handle 4 DIMMs well at higher speeds. You might try 3200 and see if you still have errors.
Yep I added them, I already had that 16GB kit in my PC. Ok thanks Im gonna try that.
 
I would run memtest86+ rather than memtest86 unless you are using the paid version of memtest86. There have been new releases of both packages since I looked at this in detail but the "+" version is open source where the non "+" version has a few tests that are only in the paid version. I think you get a couple more free tests in the "+" version.

Either way I would boot the USB and let it run overnight with the memory set to your fastest settings. If you get no errors then just use it and see if you get any crashes in windows.

Generally the testing software is much more intensive than anything windows will do.

In the worst case having more memory even if you have to drop the speed to 2400 will improve the performance more than running 1/2 the memory at the higher clock speed.
Yes when I ran that test I had the memory set to the fastest speed, which in this case is 3600Mhz.

Ok so it wont do that much to run it with slower soeed?
 
Yep I added them, I already had that 16GB kit in my PC. Ok thanks Im gonna try that.
Ok, I set them to 3200Mhz and the errors are actually gone, so thank You very much for your time and advice and thanks everyone that commented and I hope this will help the other people with same problem. <3