I have this PSU (GX 650w by coolermaster specifically) running a 5830 and 5770 at the moment. Pulls about 300watts with that setup and I'm looking to add another card to the remaining x1 slot.
Would this PSU be able to handle another 5830? Given the 52 wattage on one 12v rail. And when I say handle I mean stable without risk of my house burning down...
Just so you know the GX 650 is a very low quality PSU, coolermaster is a mix of good and crap, it's not a coincidence that it's way cheaper than other 650W PSUs. 5830s are the next most intensive consumer of electricity after the 5870, and I'm not saying they won't run on that PSU, but I wouldn't use it myself. It might not explode immediately, it might not explode ever, but there's a reason why people spend more on what is arguably the most important single part in a computer (especially one running hot 24/7).
The raw answer to your question though is yes, 650Watts will run 3 GPUs assuming a small enough system and little to no overclock on 5830s or below.
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