Help understanding my Memtest results

[Sunview22]

See pictures. Can someone look at my results and let me know if I should RMA?

I have a g.skill 4000 17-17-17-37 1.35v ram (4x that is XMP rated. I have it set on XMP II

when I ran memtest I had my CPU OC on - my i9-10900k was binned by Silicon Lottery but they only tested it at 3200 ram. However my motherboard is Asus z490 strix gaming - WiFi which is QVL at g.skill for this 4 pack

memtest doesn’t post the error until 97% of the way done. Is this reason to RMA?

i just bought it so I can RMA.

im rerunning this test with optimized defaults on for the cpu OC to see if the CPU was the problem

[David (PassMark)]

I very much doubt any vendor would accept a RMA if it only fails on an overclock.
CPU & RAM errors are to be expected if you overclock enough.

[Sunview22]

Thanks for your reply David. However, I couldn't RMA if the speeds they rated at XMP (and which i paid a premium for) dont work?

The kit im using is a 4 stick pack rated at 4000 17-17-17-37 1.35v on XMP II. My motherboard is listed as QVL on G.Skill's website ASUS z490 Gaming-G WiFi. It posts to OS but quickly fails any tests I stress it with (Memtest, Prime, Karhu).

I ran the same kit stable (no errors) for 6 hours on mem test when i down clocked it to 3200 CL14. So not sure if its the ram or how my MB handles 4000mhz.

My cpu is i9-10900k

This is the ram kit (https://www.gskill.com/qvl/165/299/1...17Q-32GTRG-Qvl)

[David (PassMark)]

During testing I would also return the CPU back to a normal clock speed.

Did you benchmark the machine a 3200/14? It is probably nearly as quick as 4000/17

[Sunview22]

Yep i put CPU back to normal and tried all voltage levels, even loosen timings but nothing worked at 4000.

I ended up finding a stable setting at 3200 14-14-14-34 @ 1.35v and 3200 12-13-13-32 @ 1.50v. Both passed Memtest 6hour tests (twice for XMP 2 and 1) with no errors.

Feel like i wouldn't be able to do better at 4000 to get the same 7.5 nanoseconds that a 3200 CL12 delivers (would need 4000 CL15 which isnt happening on my rig)

I appreciate the help along the way!