From the Power Supply Calculator I got that I'd need 1090 watts Tags: Homebuilt Overclocking Power Supplies Systems Product Last response: September 28, 2009 5:11 PM in Systems Share terron September 28, 2009 4:39:11 PM http://spreadsheets.google.com/ccc?key=0Aj-_GkpiUe6KdEN... I will be overclocking my cpu and will have a controller connected to my computer very often. Once I get a little more money I'll get another 4870 and crossfire them. Is a 1200 watt psu really needed? Also, will that cooler be functional? More about : power supply calculator 1090 watts obsidian86 a b B Homebuilt system a b K Overclocking a b ) Power supply September 28, 2009 4:41:19 PM not a chance, a quality 750 watt will handle 2 cards fine if you still not comfy get an 850watt instead thats one of the best coolers it will work fine just get the 1366 version terron September 28, 2009 4:47:46 PM I knew that much power wasn't needed. I'll go with a 850:http://www.newegg.com/Product/Product.aspx?Item=N82E168... Can't find your answer ? Ask ! Get the answer obsidian86 a b B Homebuilt system a b K Overclocking a b ) Power supply September 28, 2009 5:11:17 PM thats a good one Can't find your answer ? Ask ! Publish Related resources: ForumExtreme Power Supply Calculator Crazy??? ForumPower Supply Calculator - Capacitor Ageing? ForumPOWER SUPPLY NEED CALCULATOR ! ForumPsu calculator says 297 watts for whole pc but .. .. .. ForumThe Extreme Power Supply Calculator is ridiculous ForumCore i7 or 1090 T? GTX 470/480 or HD 5870? Forum500 or 600 watt power supply ? ForumWhich PSU wattage calculator should I trust? ForumI5 3570k and 6850 on 500 watts power supply ForumWhat power supply wattage do I need ? ForumHelp me with Power Supply Wattage Calculator ForumDo I need a new power supply ? ForumI got a PSU of 300 watts and i want HD radeon 5670... Can i do that ? ForumBest Graphics Card for 350 Watt Power Supply ForumPower Supply - How many watts will i need ? ForumWhat Power Supply for i7-980X Build? ForumGA-890FXA-UD5 (rev 2.0) & X6 1090 T: no POST, 10 short beeps ForumWill this PCI Fit on my Motherboard? ForumWhat kind of PSU do I need for this rig? ForumNew Gaming Rig need suggestions and advice since i am still new to it. More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !