Originally Posted by frenetic1amnesic;12643476
Hey guys, been crunching for a long time and recently upgraded to a new rig. I decided to put my points somewhere useful, so I joined here. Looks like I'll be running Aqua and DNETC for now. Good for around 290k PPD from DNETC and another 38k from Aqua.
I have another 5870 on the way right now, but I’m not sure if my PSU will be able to handle it. Is a SeaSonic X650 enough for 2x 5870s and an overclocked Phenom II X6? I think I'll bump up to the newer SeaSonic X760 if not.
Welcome to the team!
I have reason to believe that the power consumption and heat generated in the GPU while doing most of these distributed boinc tasks is far below the maximum if the card is loaded by a really modern game or benchmark type program. My GTX460 does rise to 55-60C depending on the task, however, the fan stays at 40% speed the entire time. (I'm not sure at what temp the fan speed is supposed to rise, must be higher than 60C though). This behavior leads me to believe that only a particular part of the card is being fully utilized. As I understand, the memory is not taxed much at all while doing these types of tasks which may account for this behavior.
As I understand, the maximum power draw of a 5870 at reference speeds is under 200W:http://www.gpureview.com/Radeon-HD-5870-card-613.html
I would venture to guess that while doing a distributed task through boinc, that power consumption is probably closer to 100W than 200W.
If my assumption is true, then the 650W seasonic shouldn't have a problem. If it is false.. well.. you'll be close to the limit for sure.