Solved How much power? Tags: Power Supplies Build Power Components Last response: August 8, 2012 6:25 AM in Components Share gxavier38 August 8, 2012 5:58:46 AM Hey guys. According to my calculations, my friend's build will need 700W of power. Online calculators say 800. Which is it? i5 3570k 2x 7950 One SSD One 5400 RPM HDD Regular/low end Z77 motherboard. Forgot which one. Will check again. More about : power abekl a b ) Power supply August 8, 2012 6:00:39 AM The 7950 practically sips power. I would go with the lower estimate and get a 750w PSU m 0 l amuffin a c 111 ) Power supply August 8, 2012 6:02:26 AM About 650W. Total power draw would actually only be around 450W, but a 650W will be the most ideal PSU that will have all of the connectors for the GPU's. m 0 l Related resources how much power can a singe power strip handle? - Forum How Much Power Will I need - Forum How much watts does a 450w power supply sucks from the wall - Forum How much power supply do i need? - Forum How much power do I need,are these parts compatible - Forum Can't find your answer ? Ask ! Get the answer 2260121 August 8, 2012 6:04:37 AM I would say 800W to be sure or if he wants to overclock the cpu and both gpu and add some fans. But i have a question. Why 2 7950 ? one is not enough? m 0 l gxavier38 August 8, 2012 6:07:15 AM 2 for the future. Oh and yes, I will overclock it. Not extreme tho. m 0 l Best solution amuffin a c 111 ) Power supply August 8, 2012 6:08:34 AM 2260121 said:I would say 800W to be sure or if he wants to overclock the cpu and both gpu and add some fans. But i have a question. Why 2 7950 ? one is not enough? 800W? Even overclocked a 650-700W will be able to power his entire system. Share Hazle a b ) Power supply August 8, 2012 6:14:28 AM extreme outervision's PSU calculator's giving me 608W, assuming you OC the CPU to 4.2ghz at stock voltage. but considering the site's tendency to over compensate, you could probably run it with 550W if you OCed nothing at all. but assuming you do OC, 650W is a safe maximum m 0 l dudewitbow a b ) Power supply August 8, 2012 6:17:52 AM 700 sounds right if you ever want to add more to it. m 0 l 2260121 August 8, 2012 6:19:39 AM amuffin said:800W? Even overclocked a 650-700W will be able to power his entire system. Ok then, if you say so i believe you. m 0 l gxavier38 August 8, 2012 6:25:03 AM Best answer selected by Gxavier38. m 0 l gxavier38 August 8, 2012 6:25:06 AM Thanks guys. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedHow much power Forum SolvedHow much power does my PSU need? Forum SolvedHow Much Room do I need?? (GFX card + Power Supply) Forum SolvedHow much power do my PC need for future upgrades? Forum SolvedHow much power does the R9 290 pull? Forum Solvedhow much power will it take from my PSU? Forum SolvedHow much power do i need? Forum Solvedhow much power supply for r9 270x Forum SolvedHow Much Power Do I Need?? Forum SolvedHow much power do i need for two 7950s? Forum SolvedPower Consumption - How much does it really cost? Forum SolvedHow much power would this rig need? Forum SolvedWill i have enough power, and if so how much will i have left over for other components? Forum SolvedHow much Power do i need Forum SolvedHow much will my 450W power supply handle? Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !