Well i always was under the impression that the vga's are much hoter than the cpu's. I believe that the 295's are hoter than the 9800gx2 but ive been wrong before (nah :P)
Anyway i just think it would be a good idea to use the triple one.
Do check it with the driver's, i've been trying to install my 295 (EVGA version) and it won't take anything. i've downloaded more than 5 version's till now.
(Card was OEM so no cd)