June 08, 2012, 04:48:58 pm
To your knowledge, would my Thermaltake toughpower XT 875 watts be strong enough to magage the new GTX 690, i have an I7 3.4ghz, 16 gigs RAM.
Just to be sure before i put myself on a waiting list to get it.
Hi Sacha, applications that do support 2 GPU cores (such as the 2 x 680 GPUs in the GTX 690) basically use 1 GPU core + 50% of the onboard ram for rendering frame 1 and the 2nd GPU core + the next 50% ram for rendering frame 2, and so on and so forth.
Unfortunately, you will not see any significant performance gain with a GTX 690 (compared to a GTX 680), since Lumion doesn't perform any better with 2 GPU cores. And due to the ram mirroring, you will only benefit from 4GB of the 8GB ram.
Anyway, I just wanted to make sure you were aware of this before purchasing a new card - some of the other 3D applications that you use on a daily basis may be better equipped for taking advantage of the 2 GPUs on the GTX 690