Error on block module 6

[Bolik]

Hello, this is a fairly new computer (built it around nov-dec) and it was working perfectly until few weeks or about a month ago video games started crashing to desktop. The crash would be very random, I would play for couple hours it would crash or 10minutes and it would crash (few times it did not crash after playing for 3-4hours). Then I checked the event logs and found a bunch of application errors, so realised this is a problem. Tried multiple fixes nothing worked and whilst searching for fixes and ended up doing memtest.

Here are the specs:
i7-9700k (not oc'ed)
asus rog maximus xi hero wifi
corsair vengeance lpx 2x (2x8gb) 3200mhz CMK16GX4M2B3200C16
rtx 2080ti
evga supernova g3 750w

After doing memtest, this is what I got:



so, then I ran only test 6 again



now since the ram was on xmp profile, I turned it back to auto and tried again (in memtest it still showed that ram is at 3200mhz, is it a bug? cpu-z and bios show 2133mh), however the error still persisted.
This is the last log https://pastebin.com/xPnvbsb4

So now what could be the problem? Is it cpu? since the error only comes to cpu 5, is it motherboard or the ram?

Thank you

[David (PassMark)]

Looks like bad RAM.

See,
https://www.memtest86.com/troubleshooting.htm

[Bolik]

I've retested each ram individually in each slot and it the error only happens when 4 modules are installed, is it still ram issue?

[David (PassMark)]

It is not unusual to see errors in dual channel mode and not see them in single channel mode.
So yes, I still think it is a RAM issue.
Try them in pairs.

Might be that voltages are marginal and with 4 sticks the extra electrical load causes a slight voltage drop below what the marginal stick can deal with.

[Bolik]

Alright so, at first I want to mention that this was my first pc build and really don't know much about computers. I believe the issue was that I'm an idiot, but still the question remains why it was not happening before.

I forgot to mention above, that I also tried pairing them and the error only occurs when I have 4 modules. Because of that, I tried running the game with only 2 modules, crash still happened.
NOW I received an email from corsair saying that it's most likely due to compatibility issue, because I bought 2 separate 2x8 kits, instead of 4x8, however I doubted that due to everything being fine for few months prior to the crashes happening, unfortunetely the ram seems to be different. The 2 kits have different versions, one is 5.32 other one is 5.39. At the moment of writing, I have not tried placing 2 matching sticks and testing the game, but I believe that is the case. Now my biggest question remains, why did this start happening only now?

[Bolik]

Right, so I paired the correct version ram, but it still crashed.

[David (PassMark)]

Now try the other pair in the same slots.
Then try the 1st pair in the other motherboard slots.

[Bolik]

Yeah, tried the other pair and it does not seem to be crashing. It's difficult to explain in written, but when I tried 2 modules before and no errors showed up, I had ver 5.39 and 5.32 mixed up, after realizing that, I placed identical 5.39, crash still happened and now I placed 5.32 kit and crashes seem to dissapear. So I believe one of the modules from 5.39 kit is damaged, or both. In case the crashes would still appear with current pair installed, I will try getting a new kit and testing that out. Also could it be a gpu problem?

Thanks a lot for helping out.

[David (PassMark)]

If Memtest86 reports problems it is very unlikely to be a GPU problem.

BUT, games are often buggy and so are video card device drivers. So it would be possible that you have a RAM problem and a (different) problem with the particular game.