Opencl and C18
My nV video card is failing and I'm curious if it would be worth the switch to AMD/ATI for their reportedly better opencl implementation?
0
-
That depends on a lot of things, but yes, generally you will get more bang for the buck with ATI/AMD cards in CO. 0 -
[quote="Christian Gruner" wrote:
That depends on a lot of things, but yes, generally you will get more bang for the buck with ATI/AMD cards in CO.
Thanks for the reply. Is there any advantage to having a card with more on-board memory, i.e., is a 4GB card superior to a 2GB card with regard to Capture One?0 -
Since there is no comment on the memory question, I guess it's irrelevant... 0 -
[quote="PhaseoneUser40673" wrote:
Since there is no comment on the memory question, I guess it's irrelevant...
As a general rule the better the specification of a card the greater is likely to be the enhancement of performance.
BUT there are so many factors involved and so many possible combinations of both hardware and software that it would be very brave, perhaps even foolish, to make a specific positive or negative statement in a forum unless one could be sure that all current and future readers could and would interpret such a statement in a way that was properly understanding the general information provided.
Having bought and installed a card unless you undertake some well designed tests with the same card type but a greater amount of memory you will never know the answer to the question. Moreover the memory specification may be different for different sizes installed. You would need to check the specification and then work out if any difference mattered to you working in your configuration with your files ..... now AND in the future ......
All far too much effort to be likely to be useful in deciding what to buy. But basically get the best specified of whichever card looks about right for your needs an budget. And in a desktop installation check the power supply requirements are satisfied by the power supply installed. If not you may need to upgrade that too and consider cooling requirements.
HTH.
Grant0 -
Thanks for that detailed response.
I realize that there are many variables that factor in to the functioning of computer subsystems. However, it seems to me that Phase One should know if their software is capable of using X amount of video RAM under the opencl framework, regardless of other considerations. I see that their recommended cards range from having ~3GB to 12GB but it is unclear what, if any, advantage is gained from additional memory or if the GPU is the primary determinant of performance.
Since my card is failing, I have to make a decision soon. I guess I'll just trust my luck.0 -
Currently a simplified way of looking at is this
< 1 gb - not supported by CO
> 1 gb < 2 gb supported by CO in general, and gives a solid performance boost over CPU rendering.
> 2 gb - with very big files, like IQ280 or p65 raw files, there can be a performance increase over the 1 gb cards, as the processing tiles can be bigger, and thus the GPU can process the file in bigger chunks.
> 3-4 gb - no performance gain in CO, but may be useful if running many GPU intensive applications at the same time.
(please note that this is the current status and that this pattern can change without warning as technology evolves)0 -
Christian, thank you very much. This is the answer I was hoping to receive. 0 -
Thank you, Christian. This are very important information for buying a Graphic card. 0
Post ist für Kommentare geschlossen.
Kommentare
8 Kommentare