Hardware acceleration

[atmuc]

i have a laptop that has core 2 duo 7700 cpu and nvidia 8600gt gpu. i cut my long video to 30 sec video and create a mpeg4 within 20 secs. i think it does not reencode it.

i do the same thing except change stream from 17 Mbps to 10 Mbps. this time it takes 120 secs. rendering time does not effected by hardware acceleration enable/disable. it just effects cpu load. without hardware aaceleration enabled cpu runs %100 otherwise %60.

i want to bu a new laptop with i7 cpu. does it worth to buy a laptop with nvidia gpu? if i buy with ati radeon do i miss something?

[DVDDoug]

I think this means that for this particular process, the CPU is not the bottleneck. Something else is running at 100% (i.e. the disk drive or data bus), and a faster CPU or more CPUs are not going to speed-up the overall process.

"Just for fun", if you have an external hard drive (or thumb drive) try rendering from one drive to the other. When you're reading & writing at the same time, the hard drive's head has to jump back-and-forth between the two locations, and this takes time. If the hard drive is the bottleneck, the process should speed-up and your CPU usage should go up (when using the GPU). The USB might present a bottleneck too, so we really only "prove something" if it speeds-up.