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Win7 Enterprise 64bit, 8GB
Not quite a 40% boost but at least it's positive. So I now realize PD's benchmark was most likely without Video HW assist. But who will CPU encode to benefit from that PD12 boost (h.264) when HW encoding is so much faster ? Even if there is no significant performance increase with HW assist going from PD11 to PD12, it still beats CPU encoding, right? I'm missing the logic here...
Just a view on numbers I believe, CL chart data, 194/138=1.406 so the claimed 40%, keep in mind, in words at top of the stated link they said up to 40%, it is TL dependent. Your data 888/605=1.468, I'd say the hype lived up to the results for you.
I do virtually 100% CPU encoding for any final project, too each their own. It really depends on what source footage quality you have, what final format and output quality you desire. Everyone views quality differently, do what works for you. For many, over the various versions of PD, HW encoding often leaves some artifacts buried here and there in the video, CPU encoding has been much more robust to that.
What gets my attention from your post is the dramatic overall performance increase with your setup, which I attribute to the i7's AVX2. I know my E8400 is getting old so I've been looking at an upgrade (i7-4770, may be -k); your results convince me to do so.
On a large scale basis, my experience is that PD CPU encoding appears to trend well with basic CPU horsepower, a E8400 vs 3770, about 4x difference, passmark.com provides a good overall measure of CPU capability. This is pretty much the difference in results, Your PD12 results of 605 seconds vs my 159 seconds, 3.8x, likewise, a 4.1x for PD11 results.
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1- what is 'QS', associated with the onboard graphics HD4000 ?
2- If 'QS' means you ran the project encoding with the HD4000 (presumably disabling your GeForce) and given the results, why would you not always run with only the HD4000 enabled?
3a- First assumption: on your CPU encode test, the better results of PD12 versus PD11 are due to PD12 making AVX2 calls.
3b- Second assumption: based on very similar results between PD11 and PD12 in your test when HW encoding is used, video HW encoding is so significant in improving rendering performance that AVX2 becomes irrelevant.
3c- Third assumption: calls to AVX2 will be made (by PD12) regardless of HW encoding
What is your take on my assumptions ?
1- Yes, QS is Quick Sync associated with Intel Quick Sync which is part of recent CPU designs. Encoding was a specific design objective.
2- Yes, for the test the GTX580 was disabled. Likewise for the GTX580 testing, the integral HD4000 was disabled.
3a-c- I doubt it, my tested 3rd generation CPU does not support AVX2, you need the 4th generation CPU of Intel.
Jeff