bottleneck performance?

[Pseudopsia]

This readout does not tell me the full story! I suggest perhaps you should rely on something other than Open Hardware Monitor!

In my video test I used RivaTuner overlay to show CPU usage. There is one core that's 80-100% usage when GPU is not fully utilized. I had HT disabled on my 6 core CPU. With more cores you have the more that it is apparent that one thread has very high CPU usage, since other threads are distributed on the extra cores.

A long time ago during I ran some tests against original benchmark with cores disabled and found that more than 4 cores hardly increase overall score and minimum frame-rate.


Clock speed however did increase the minimum frame-rate


It's most likely an API issue, DX11 will alleviate the problem to a certain amount.


This article simplifies how the APIs work:
http://www.littletinyfrogs.com/artic...oversimplified

To to summarize:

DirectX 11: Your CPU communicates to the GPU 1 core to 1 core at a time. It is still a big boost over DirectX 9 where only 1 dedicated thread was allowed to talk to the GPU but it’s still only scratching the surface.

DirectX 12: Every core can talk to the GPU at the same time and, depending on the driver, I could theoretically start taking control and talking to all those cores.

That’s basically the difference. Oversimplified to be sure but it’s why everyone is so excited about this.