Am So 08 Nov 2015 14:56:53 CET
schrieb ary brami <arybr...@yahoo.fr>:

> 3- graphic adaptor or the one that is built in the motherboard ?

Darktable is usually a lot faster with a separate graphics adapter for
OpenCL computing. You can compare OpenCL performance of cards/builtin
chipsets at Compubench.com.

As I understand, Nvidia cards are usually more efficient, but AMD seems
to offer more absolute performance. So unless you are
power-/heat-limited you might want a AMD card. 

I am happy with a Nvidia GTX 750 Ti, which was the fastest card that
didn't need a separate power plug at the time I bought it. Probably
there is something new in the meantime.

Cheers
Michael

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