Question Performance issues with Ryzen 7900X3D ?

[dreamwolf6]

So just upgraded to a new CPU and ran my benchmark to compare to my old 5800x and I am getting similar results in 3dmark. I was not expecting a huge jump but some sort of jump to justify the money. After lots of bios tweaking and simple over-the-clock tweaks I have never been able to match with the average that other users got. Nothing running in the background. Am I just crazy and this is the way it is? Not see any overheating issues and XMP is on. I have the latest drivers and recent bios. Was getting Dram issues on start making boot times longer. Issues seem resolved with bios rollback. This is a new PC outside of the GBU. Not running any overlocks at this time. Any help would be great.

Specs:
Motherboard: ASUS ROG Strix X670E-F
CPU: Ryzen 7900X3D
GPU: 3080 Ti
RAM: DDR5 7200
PSU: 1000w
Boot drive: M.2 SSD

 

[Aeacus]

I have never been able to match with the average that other users got.

All CPUs are slightly different, even within same SKU. Also, even if you have identical build to the next person, both PCs will get different benchmark score. So, no point to compare your PC to other people's rigs. If build works fine, use it. Don't stress over synthetic benchmark numbers.

 

[thestryker]

With 7200 DRAM you're not running a 1:1 UCLK/MEM ratio so you're likely hurting performance by running that speed. You could try dropping it to either 6000 or 6400 which should allow a 1:1 ratio and check again. Results will also depend on what you're testing with. In regards to performance increase the resolution you're playing/load on GPU could very well be why. If you were largely GPU bottlenecked with what you're playing then you likely wouldn't see much of an impact outside of lows.

 

[majika]

I have a similar setup as you:
Ryzen 9 7950X3d
Asus ROG STRIX X670E-E
MSI RTX 4080 Super 16GB
Corsair AX1600i
Corsair Vengeance 32GB DDR5 @6000 CL30 (EXPO I Bios Profile)

A good read on AM5 memory speeds and as stated above sweet spot @ 6000Mhz

https://www.tomshardware.com/news/amd-confirms-ddr5-6000-ram-is-the-sweet-spot-for-ryzen-7000-cpus

This motherbaord and CPU have a boat load of options to tweak if that's your thing.. It is mine 😉

Under my BIOS the the preset Overclock profile makes a number of changes from stock. One of these are how it sets the ratio between UCLK:MEMCLK settings from Sync to Async with 103.00 on the FCLK *I think* (need to double check)
mine is found under Asus Overclock profile.. Plus this option makes a bunch of other changes..

Admittedly I'm no expert on this platform as coming from Intel > AMD BIOS is a bit different and im still getting used to how things tick..
Overall @ stock (only 6000-Mhz EXPO profile enabled) its still a beasty system for my needs, under a lot of compute workloads with many Pods/containers/VM usage.

If you have the options to explore the inner workings of how your machine is geared up to manage its Curve control optimizer which I suspect you can configure to better squeeze out even more performance to allow for higher peek speed clocks for longer, also prefer to use the correct CCD CCX for optimized workloads to use certain cores for specific workloads and the other cores for the other workloads.. There is also power delivery options and Load-line calibration stuff, again, im no expert all I know is you need to becareful if your putting lots of power to the CPU/system as bad things can happen

That is where I would start after dropping your memory clocks down from 7200MHz to 6000MHz, picking up the maybe some of the slack with Curve control??

For what its worth My system takes what seems like an Age to boot after initial POST which I suspect is all the background optimizations thats occurring..