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NVIDIA GPU Comparisons?
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mavrick816  
#1 Posted : Saturday, January 9, 2016 2:17:21 AM(UTC)
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Hello,

I'm researching the best graphics card to use with my new build. I've searched this forum and haven't really seen any comparison or performance results for NVIDIA GPUs. Has anyone upgraded their graphics card and how much of a difference as part of the upgrade?

Looking into how much processing is actually being offset with the better GPUs.

My build in progress:
HP Workstations Z230 (400 watt power supply)
Windows 7 Pro
i7 4790 CPU
32gb RAM
500gb SSD (OS and Apps)
500gb SSD (Recording)
(1) Magewell HD-SDI Capture Card
(2) BM DeckLink Mini Recorder (HDMI/SD)
(Onboard Intel4600 Graphic Display)
NVIDIA750 (ASUS GeForce GTX750-PHOC-1GD) - Single Slot
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Kelvin  
#2 Posted : Thursday, January 14, 2016 3:21:43 PM(UTC)
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Here's a link to a GPU benchmarking website. I has all of the various GPUs listed. Not really sure how their numbers compare to realworld use of vMix, but it is a place to start.

GPU Benchmark Link
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thanks 1 user thanked Kelvin for this useful post.
mavrick816 on 1/14/2016(UTC)
mavrick816  
#3 Posted : Thursday, January 14, 2016 10:11:55 PM(UTC)
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Thanks Kevin. I received my Nvidia 750 and compared the stream and record function. Here are some eyeball comparisons:
Running the latest Vmix(1/12/16)
1) Playing 720p MP4
2) 720p Streaming
3) 1920x1780 Recording

Intel 4600 (Onboard)
~75% to 85% CPU Utilization

Nvidia 750 (New)
~65% to 75% CPU Utilization

Summary: I only saw a slight 10% decrease in overall CPU when I moved from the onboard 4600 GPU to NVIDIA 750. I also adjusted the CPU to MAX on the NVIDIA. Are there any other adjustments?

Kelvin wrote:
Here's a link to a GPU benchmarking website. I has all of the various GPUs listed. Not really sure how their numbers compare to realworld use of vMix, but it is a place to start.

GPU Benchmark Link
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IceStream  
#4 Posted : Thursday, January 14, 2016 11:58:47 PM(UTC)
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@ mavrick816

Have a look at these 2 threads which might give some insight into possible other tweaks:

http://forums.vmix.com/d...ts&m=20150#post20150
http://forums.vmix.com/d....aspx?g=posts&t=5310


Ice
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madness  
#5 Posted : Saturday, January 16, 2016 11:28:19 AM(UTC)
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I bumped up from a GTX660 to a GTX970, and honestly didn't see much of a performance gain. The primary benefit for me however was going from 2GB to 4GB of graphics memory storage. Gave me a little more headroom for processing graphics in blender, or video conversion.

Really not seeing a difference with VMix and my current load of inputs. Perhaps if I had more I would.
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IceStream  
#6 Posted : Saturday, January 16, 2016 4:37:03 PM(UTC)
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@ madness

To be fair, the 660 is ranked higher than the 750:
http://www.videocardbenchmark.net/compare.php?cmp[]=2152&cmp[]=2825
So whatever advantage is gained with NVENC support on the one side might very well be lost with the slightly lower overall GPU performance of the 750 (just sayin').
One has to be very careful with the NVidia Graphics Card Series numbering scheme, moving up to the next generation card does not unequivocally mean better performance and specs, it's the second and third numbers that relate to speed and performance:
http://www.tomshardware....vidia-video-card-numbers
https://blog.kingj.net/2...hics-card-model-numbers/
http://lifehacker.com/58...hierarchy-of-video-cards
So, although the next gen typically incorporates newer technology and supports newer features, performance is still designated by those second and third numbers and an older high performance card will often work better than a newer mid-range card.


Ice
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madness  
#7 Posted : Tuesday, January 19, 2016 3:23:19 PM(UTC)
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Sorry, I posted 750, but it is a 970...
http://www.newegg.com/Pr...spx?Item=N82E16814487076

My bad. Still, I didn't notice much improvement.
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