Ven Posted September 14, 2011 Share Posted September 14, 2011 HelloMy PC spec is as follows:Asrock P67 Extreme4Intel i5-2500K OC to 4.8 GHzNoctua NH-D14 CoolerPCI Sata/IDE Controller - Rosewill RC-2154x2GB G Skill Ripjaws Ram4x 2TB Drives, 1x 1TB Drives, 2x Sata Notebook Drives, 1x IDE Notebook Drive, 1x Kingston V 100+ 96GB SSD2x Radeon HD 6950 stock clocks and Bios (One is out for RMA - going to crossfire when it arrives)4x 120mm Fans, 1x 140mm Fan, 1x 80mm FanAntec EA-650 Earthwatts 650w PSUI would like to know if my PSU is sufficient to crossfire with the current spec, or should I upgrade? I am, currently strapped for cash and would like to avoid upgrading the PSU. Also, I would like to know what are the symptoms of suffering from an overloaded PSU?Thank You Link to comment Share on other sites More sharing options...
allen2 Posted September 14, 2011 Share Posted September 14, 2011 Here is a psu calculator and be sure to set a higher component you're not sure or the component isn't listed.I'd say without even checking that your psu is not enough as when you're overclocking not only the cpu but some other components will require more power.An overloaded psu would most likely not start sometimes; might also provide a nice burnt odor; some of the lines might not be powered sometimes; it could start a fire......Usually, it is not the component you want to be overloaded as you might damage the other parts (most valuable) of your computer. Link to comment Share on other sites More sharing options...
puntoMX Posted September 17, 2011 Share Posted September 17, 2011 +12V1@38A, +12V2@38AThat 650W PSU is enough even when you use 20% more voltage on the components, no need for an upgrade really. Combined those two 12V lines I think still will do 54A or so. Link to comment Share on other sites More sharing options...
allen2 Posted September 17, 2011 Share Posted September 17, 2011 I just used the psu calculator and setting the two hd 6950 in crossfire and overclocking with1.39V with all those drives would need 684W and a recommended PSU of 734W. With only one radeon,you don't need to replace your psu. Link to comment Share on other sites More sharing options...
puntoMX Posted September 17, 2011 Share Posted September 17, 2011 There seem to be 2 different models of the EA-650, one with 2x 12V lines and one with 3x 12V lines; If you have the one with 3x 12V lines I would get a 800+W to replace it. But if it's the dual rail one, also called the green one, I would just use it as it will provide enough power. Link to comment Share on other sites More sharing options...
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