> Yeah, bunnymark isn't a real rendering performance test, it's probably CPU/memory bottlenecked.
> I don't know why people are talking about multicore and CPU limitations. You do realize the problem is PURELY on the GPU side, right? Unless it's harder for the CPU to keep up with 3000 objects in renderperftest than it is for the GPU to draw it...
Do the bench with your setup and monitor GPU usage with GPU-Z, lets see the GPU load %. Bet you its nowhere near your CPU utilization.
I've just monitored GPU usage in Airscape demo on Steam, 1080p (auto resolution and standard). ~15-20% of my GPU is loaded while playing 60 fps (with random stutters). It's definitely not a GPU bottleneck.
Face=palm. Totally forgot about gpu-z.
Okay, so, on my system (3570k, HD4000) I can confirm that the gpu is getting loaded down. In the dropbox airscape demo, gpu is at 90% or more at 60fps, auto setting, window size aprox 800p.
Trying a random project of mine (space shooter with a couple webGL effects and a few layers) I upped the rez to 1080p and looked at what I got. With default settings, smooth performance was a no go, with fps running similar to airscape in the latest chrome stable, ie, from 30 to 40fps. Stripping away almost all the fx, and a few window dressing layers got me 60fps, but with little room to spare according to gpu-z.
I think it's starting to look like:
(C2 engine + real game + iGPU) != (60fps 1080p)