Yet another GPU question, please?

royfphoto wrote on 3/3/2015, 5:01 AM

I'm running two screens thru a R9-270 DV-I, my computer will also allow the Intel on board graphics to be enabled, any advantage to hooking one of the screens up to it?

Comments

ushere wrote on 3/3/2015, 5:10 AM

i did this for a while with a nvidia card (set up in bios to use both). thought it might be useful to use quicksync on the intel.

when i got a new card i simply went for the discrete card to run both monitors since i didn't use quicksync in the end.

wwaag wrote on 3/3/2015, 9:48 AM

If you want to use Quicksync in Vegas, then you must drive one of your displays with the Intel. I use the Intel graphics to drive one display monitor and an Nvidia 650 card to drive the second display monitor plus a TV monitor for preview. In Vegas, I select the Nvidia card for effects GPU processing. Works very well for me.

Quicksync renders are a lot faster compared with Sony AVC, but unfortunately they are limited to 720 60P. Rendering 1080 60P is broken. I still find it useful for preview renders. Once satisfied, I use the Vegas to Handbrake script for final renders to 1080 60P. Handbrake also supports Quickysync which is roughly twice as fast compared with CPU only.

wwaag

ddm wrote on 3/3/2015, 11:12 AM

I recently tried using my Nvidia 570 AND my Intel GPU with my two monitor hook up, and while I still had the ability to choose to turn on GPU or not, I discovered that Vegas was NOT using my Nvidia GPU at all.. I had to use the second output on my Nvidia card to get back the performance gains from my 570. Clearly, it seems that some people are able to mix and match, but it definitely did not work on my system, although it did give the appearance that all was well. Only after running some benchmarks did I discover than the GPU was being ignored. Mind you, this was for preview only, I didn't try it with GPU assisted rendering.