I upgraded to Vegas 11 for the alleged preview speed improvement and it is simply terrible on my machine. I have an NVidia Geforce GTX 465 (latest drivers) which is supposedly compatible with this program.
Has anyone else seen poor performance with a NVidia Card?
I believe the GTX 465 is too old a card. I have a GTX 580 and have very good playback speed. Depending on the amount of work that has to be done on the images, there can be some dropped frames. But overall, I get great playback speeds.
I think the power of the CPU / GPU combo should work as expected. Although the Q9400 is a mid to low range processor, the GPU acceleration should be noticeable.
So yes, as requested above - give us a break down of what media types you have. Camera media and graphics on the timeline, and any FX that might cause slow down. The 8GB RAM 'may' also be an issue if you are doing a lot of HD work. RAM preview settings can also have an effect.
I've got a GTX470, CUDA2 compliant and an i7 OC'ed to 3.56GHz with 24 GB RAM (for music composing not for Vegas) on Windows 7 64bit and I notice that the auto-crossfades between still images are not smooth at all during preview . Best Full or Best Half.
Puzzling on such a powerful machine.
Grazie wrote: "Well, I just read this on the SCS Req Specs page.
"GeForce GTX 4xx Series or higher (or GeForce GT 2xx Series or higher with driver 285.62 or later"
I copied this from the SCS GPU Accel specs. So that confirms our chum has the correct Graphics Board.
Maybe it is the driver needing updating?"
The minimum requirements also say: "•2 GHz processor (multicore or multiprocessor CPU recommended for HD or stereoscopic 3D)" with 2 gig of RAM.
Vegas 11 will work on such a system but it doesn't mean that it will work very fast. A GTX 4xx series card is just a minimum. You do not expect much from a duo core CPU computer even if Vegas 11 will work on it. The same applies to a video cards. You're not going to get the same kind of playback speed from a GTX460 than a 480, a 560, a 570 or a 580. The driver will not make much of a difference.
I have tried multiple video cards on the same computer and the difference can be quite drastic. The Radeon 5770 is on the list of compatible cards but I can tell you from experience that it doesn't help nearly as much as a GTX580. We are talking about a fraction of the power.