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Old 30th January 2014, 22:53   #22197  |  Link
cyberbeing
Broadband Junkie
 
Join Date: Oct 2005
Posts: 1,859
Quote:
Originally Posted by leeperry View Post
Madshi said that it wasn't all that demanding on his 7770(or was it 7790?) and I can confirm that it's a breeze on my factory overclocked 7850.
It's partially a matter of perspective I believe. madshi's numbers showed it increased his relative render times by 400% when he enabled OpenCL dither compared to his previous settings. This could likely be interpolated into 400% higher GPU load and power draw. That said, I have no doubt it will perform well on AMD Southern Islands based GPUs, since that's what he optimized it for. madshi's numbers for the absolute render time cost of enabling openCL dither on his AMD 7770 (80W TDP, 1.3 TFLOP) @1680x1050, seems nearly identical to the numbers of my much higher powered GTX 770 (230W TDP, 3.2 TFLOP) @1680x1050, assuming he tested with smooth motion disabled.

I see madshi's argument of it not being *that* demanding, as more of a statement that it should still be usable based on absolute render time increases, which I'd agree with. If you want to use NNEDI3 as well, or have a weaker GPU already being pushed very hard before the OpenCL stuff, all bets are off.

Last edited by cyberbeing; 30th January 2014 at 23:48.
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