FX-8350 VS APU 3870k benchmarks - How much a slower CPU bottlenecks a GPU

[disolitude]

Soleron said:

You should have compared CPUs of the same architecture and if possible core count.

The A8-3870K is Llano based which has higher per-core performance than the Piledriver-based FX-8350. The FX has four more cores, but they really aren't used in a 3Dmark type benchmark because the CPU threads for game graphics handling are one or two threads at most.

Your test doesn't show what you want it to show because the results are not comparable.

Sure they are...

It shows that PCIe x4 vs PCIe X16 on the exact same platform has little to no impact.

It also shows that having extra CPU cores which are utilized in 3D mark vantage doesn't yeld a much higher frame rate. 3.6 Ghz on Liano vs 4.0 GHZ on piledriver should be close enough in terms of core vs core considering Liano is sligtly better.  Jane nash test averages 7 frames per second more (10%) on the FX 8350 while on the pure CPU tests it's doing 45% better. This is pretty telling as to where the bottlenecks are when it comes to gaming (GPU) .