dddarthvader :
Can a silverstone 450W Gold certified sfx psu power a Sapphire R9 290? I did a little bit of research and found out its drawing around 300W. Just wanted to make sure everything will be fine. I wont be overclocking the gpu nor the cpu.
Thanks in advance!
I was looking at the same combo (and using the new RVZ01 case to build an HTPC/Gaming box) and I've backed off for the following reason: the 450W PSU SHOULD be enough to power the card and components (I built mine around i5-4670 and R9-290 Tri-OX which comes out to like 410W max draw) however the Gold SFX PSU only puts out 37A on the 12v rail which is below what the card requires (40A).
I think this is a risky solution.
My two cents, I've given up on using the R9-290 in an HTPC purposed box, instead am building around a GTX770 (MSI TF 2GB) and using the Silverstone GD04 case (which allows you to use a normal ATX PSU but restricts your card length to around 11", to short for the Saphire R9 card). Note that the depth of the case is a restriction for me, which is why I am going with the GD04 instead of a GD08 which CAN accommodate the R9 card and a normal ATX PSU.