Look at Core i5-4670 CPU load at SVP Level 3g with OpenCL off: 75% (FHD source in FHD display). The SVP level each CPU can do is
OpenCL off / OpenCL on
- Core i5: Level 3g / Level 5g
- Core i7: Level 4g / Level 5g
GPU load increase by enabling OpenCL is very small. For examle, comaring Core i5 4670 + HD 7770 (SD i / HD p / FHD p in FHD target with madVR Level 5) in madVR.xlsx with the result of SVP Level 5g + madVR Level 5 in the above,
- SD: 66% -> 64% (again decreasing, but you shouldn't care, it's a small variance)
- HD: 71% -> 74%
- FHD: 38% -> 45%
There is nothing difficult, you just need to analyze the tables with a little care.
In summary, there is no difference between Core i5 and i7 as long as you stay with the preset SVP levels and you use GPU acceleration, both of which can do SVP Level 5g. As for madVR levels, look at madVR.xlxs or the chart in this post
. You should look at not "Film" but "Video"
because SVP turns "film" into "video". Every Radeon card 7770 or higher supports madVR Level 5.
The notion of FLOPS
(Floating-point Operations Per Second) is a convenient index to measure madVR performance. Memory bandwidth also affects it (to some extent).
HD 6870: 2016 GFLOPS / 134.4 GB/s
HD 7770: 1280 GFLOPS / 72 GB/s
HD 7790: 1792 GFLOPS / 96 GB/s
HD 7850: 1761 GFLOPS / 153.6 GB/s
HD 7870: 2560 GFLOPS / 153.6 GB/s