Question Struggling to get the max out of my CPU

[Phosfr]

im sorry if this is posted elsewhere.

I have a 7800X3D and am currently trying to use ryzen master (taboo i know) to OC.

when i set all my parameters to max (PPT 420W , TDC 280A and EDC 350A) and run a multi-thread stress test with Cinebench its maxing out at 20% usage on PPT, 19% on TDC and 17% on EDC, which to my untrained brain makes me think the CPU isnt working anywhere near as hard as it can...

1. Does anyone know why?
2. Can somebody point me in the right direction if yes

https://imgur.com/a/TNHRFax

View: https://imgur.com/a/TNHRFax


Thanks

 

[geofelt]

Let me guess:
7800X3d is a gaming specific processor.
It has a huge cache that can be used to speed up the master thread of a game.

When you run multithreaded benchmarks, that cache is constantly emptied, and performance is not even as good as the underlying 7800 processor.

 

[dev_cyberpunk]

Let me guess:
7800X3d is a gaming specific processor.
It has a huge cache that can be used to speed up the master thread of a game.

When you run multithreaded benchmarks, that cache is constantly emptied, and performance is not even as good as the underlying 7800 processor.

I think it has to do with the construction of the bus from chip section to another than anything else, because they use serial mux method which they would have to put buffers in to maintain data width. Then they overclock this bus to get performance out of the chip. Intel uses parallel bus technology that is lower internal latency, but they clutter their cpu with extra circuits that drops the operations out of real time. Then they overclock internally in attempt to maintain real time metrics.

That is why these chips now these days are harder to overclock correctly. ARM chips have a better chip architecture to overclock, as long as its not a specialized type that has a lot of on chip devices ( for example, the Flogic 880 with 2 - 10Gb + 4 -1Gb interfaces on chip). Because, it too has to buffer these.