Poll: Ryzen 7950X3D, 7900X3D, 7800X3D

[MB400]

No, please never ever listen to anyone who tells you to disable a second CCD.

Have you changed any BIOS options relating to the VCache? For example, the CPPC setting? The chipset package will install the correct packages, unless you’ve set incorrect BIOS settings.

Hi LtMatt,

Any feedback on my current settings?

 

[LtMatt]

Hi LtMatt,

Any feedback on my current settings?

See post below.

 

[MB400]

Try these, note RCD at 35 may require a bump to your voltage to attain stability.

Which voltages do i need to increase for the RCD 35?

 

[LtMatt]

Which voltages do i need to increase for the RCD 35?

VDD and VDDQ.

I made a mistake in that screenshot above, use this one.


If RCD at 35 is a no go, raise to 36, increase RAS to 48 and drop RP to 32 and retest.

 

[MB400]

See post below.

Result with those settings:



++ testing with the corrected one now

 

[LtMatt]

Result with those settings:

See my updated screenshot above, timing slightly off. RAS to 47, RRDL to 12 and rerun.

 

[MB400]

See my updated screenshot above, timing slightly off. RAS to 47, RDDL to 12 and rerun.

With RDDL to 12 u mean Trrdl?

 

[LtMatt]

With RDDL to 12 u mean Trrdl?

Yep.

 

[iron_monkey]

I'm hoping to have my new 7800x3d system up and running later today, can't wait to see the difference from my old 2900k. I'll keep it stock until I'm sure it's all working and I've run a few baseline tests. Then I'll look into tweeking it for the best settings for cpu ram and gpu. I'm sure there was loads of great info posted here probably by @LtMatt. If there is any links to guides etc let me know. Cheers

 

[MB400]

Yep.

Result;

 

[LtMatt]

Result;

 

[MB400]

Thanks, is this the max we can go on this set? btw in Karku i have a speed of 255-256mb after 100%.

 

[LtMatt]

Thanks, is this the max we can go on this set? btw in Karku i have a speed of 255-256mb after 100%.

Pretty much without going into silly voltage territory of over 1.6 VDD.

 

[MB400]

Pretty much without going into silly voltage territory of over 1.6 VDD.

Im running 1.59 VDD at the moment, got a 140mm fan on my RAM which never gets above 45 degrees while stress testing.

 

[LtMatt]

Im running 1.59 VDD at the moment, got a 140mm fan on my RAM which never gets above 45 degrees while stress testing.

Yeah you'll need at least 1.59 VDD for that to be stable. I need 1.6v for my dual rank kit.

 

[MB400]

Yeah you'll need at least 1.59 VDD for that to be stable. I need 1.6v for my dual rank kit.

at 10 minutes tm5 i got a error.

++ raising the VDD to 1.6v and lets see

++ seems also Karku is now hitting 260MB instead of 255 with the 1.6v

 

[LtMatt]

at 10 minutes tm5 i got a error.

++ raising the VDD to 1.6v and lets see

1.6 VDD and 1.45 VDDQ. Can also try 1.5 VDDQ.

 

[MB400]

1.6 VDD and 1.45 VDDQ. Can also try 1.5 VDDQ.

For some reason Test Mem 5 stops after 1 cycle. The time keeps running but it doesnt proceed to cycle 2? 1usmus_v3 config

1.6 vdd and 1.5 vddq

++nvm was an issue with my tm5, got a fresh download and it seems to proceed to cycle 2.

 

[MB400]

1.6 VDD and 1.45 VDDQ. Can also try 1.5 VDDQ.

It stops after cycle 3 now;

 

[LtMatt]

It stops after cycle 3 now;

I use this with CPU Cache enabled rather than TM5 as I found it better for exposing system instability.

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If you can pass at least 12+ hours of that overnight, you are good.