Latency question - possible issue?

[Daniel_]

Hi all.
Ive recently replaced 64Gb (4 x 16) of corsair vengeance pro 3600 18-22-22-42 with 32Gb(4 x 8) of Team group ripped edition 3600 14-15-15-35.

Whilst benchmarking with Passmark Performance test, the latency result of the Corsair is 26 (95th percentile) whereas the latency of the Team group is 41 (50th percentile)
Both had DOCP on and a mild CPU overclock.

Am i totally missing something here? Surely the latency should be lower not higher? Any ideas?

Ryzen 9 5950x CPU
Ausu x570 F MB

Thanks
Dan.

 

[Daniel_]

3600mhz and FCLK 1800. Ive tried tweaking it to 3666 and 1833 but there's no change.

I've also brought the tFRC down from 630 to 300 which helped a little

 

[Daniel_]

Try decreasing those figures to 3200 and 1600 respectively.

Ok thanks, i'll try that when i get back from work this afternoon.

What's the command rate ?

Im not entirely sure as im not at the pc right now, but i think its 2T. Would it be worth changing that?

PS, Im new to memory tweaking/overclocking

 

[Daniel_]

Ok.
Decreased the speed to 3200/1600, no change.
Changed command rate from 2T to 1T, no change.
Reset DOCP to auto, no change.
Reset bios and overclock, no change.
Tested each module in each slot, no change.



Im now thinking it could be a compatibility issue with the motherboard?

 

[Daniel_]

Have you tried measuring latency in a different tool such as Aida64? The timings can't be applying if it's staying the same. Dropping to 1T alone would make a difference.

I have, both Aida64 and Hwinfo, they both show the same 14-15-15-35

 

[Daniel_]

Thank you all for your help. I think im going to have to return them, as nothing ive triied has helped.

 

[Daniel_]

Latest bios verson - 4021, not sure on the AGESA. I can only get windows to boot if it has four sticks. It wont boot with only two, regardless of DOCP on or off.

Aida64 and Zen timings below

https://imgur.com/a/lT6Ljwj

Ill try Membench asap.

Thanks.