Not sure if this is the right venue for this topic, but here goes.
I do light video editing for jobs sometimes, but mostly it's just youtube. I'm not too keyed in to the technical side of how things really work, I just push the buttons and learn along the way. I recently installed a GTX 980 video card into my PC, and I had thought it would aid in the rendering process. (I use Sony Vegas pro version 13.0) I have the appropriate things ticked in the options menu for GPU acceleration, but I have it set to automatic for rendering, which I would assume uses the gpu when available. I have an Intel i7 3770k overclocked at 4.4GHz, but what I'm noticing is that my render times aren't cut significantly from when I had an i5 3570K (OC'd to the same 4.4GHz) and GTX 660Ti installed. And before you ask, yes I have it set to use all 8 threads in Vegas I have a GPU usage widget (msi afterburner) in my second monitor, and I've noticed it goes anywhere from 0 to 15 % usage over the course of a second, wavering back and forth rather quickly from nil to meh usage. My question is, is there any particular settings I should play around with or try out to help me render faster? Or am I just overthinking how much GPU acceleration actually plays in to render times? From what I understand, Vegas likes to use OpenCL compatible cards for its acceleration. From what I understand OpenCL enabled cards tend to be on the AMD side of things, but is my 980 contributing to render speed? And if it is/should be, how do I go about squeezing the beastly horsepower from this gaming card for video work? Could (I hate this term) bottlenecks be elsewhere in the system? My CPU usage during rendering is, as expected, between 85-98/99% for all 4 cores/8 threads the entire time. I've never seen it at 100%
One final thought, there is a setting in Vegas for dynamic RAM preview. I've been reading in older forums around the web that adding to this value detracts from the available RAM Vegas has during render operations. Is this true? If so, of my 16GB, how much should decently be allocated for this dynamic RAM preview? Does RAM allocation make a large difference in the render process?
For what it's worth, the majority of the video files I am editing are large and mostly uncompressed DXtory recordings. (13 mins, 30GB) My most recent render elapsed about two hours for roughly 24 minutes of footage, with a small amount of compositing and one very quick transition to an end card. This particular edit was 1920/1080p at 60fps.
Thank you all in advance,
Brian (BriGuy)
Full system Specs:
Motherboard: AsRock Z77 Extreme 4
CPU: Intel i7 3770K @ 4.4 GHz cooled by a Corsair H100i with noctua nf-f12's
GPU: NVIDIA GeForce GTX 980 Reference, mildly overclocked +150MHz
RAM: 16 GB Corsair Vengeance 1333 (I believe)
Storage: 250 GB Samsung 840 Pro (boot+most apps) 500GB Samsung 840 EVO (more apps, games, etc) 2* 1TB WD Black @7200RPM (recording disk and also render output disk)
PSU: Irrelevant but I'll throw it on here anyways... Corsair RM Series 750W