Okay, so here is my build so far. I probably wont ever full upgrade the RAM to 64GB, use all 8 case fans, or use 3 GPUs, but I would like to know how many watts I would need if I ever decided to do so. I'm confused by all the online calculators I've tried. They seem terribly inconstant, hitting anywhere between ~770 to ~1100. Right now I'm looking at a Thermaltake TR2 RX 750W. Let me know if I left anything out... Thanks! ^_^
1x ASUS Sabertooth X79 (LGA 2011)
1x Intel Core i7-3820 Sandy Bridge-E 3.6GHz
1x COOLER MASTER Hyper 212 EVO
3x XFX Radeon HD 7870 (Crossfired)
8x DDR3's (I'll probably be running 1600's)
1x DVD-RW/DVD+RW Drive
2x 320GB Hard Drives
I take it you used this calculator http://extreme.outervision.com/PSUEngine It says minimum 720watts for 90% load case and recommends 770watts. It is considered fairly accurate and based on those results I would say min 850watt for overclock and/or any stress testing you might do.
Okay, cool. You guys are a lot of help. The calculator on newegg.com said something like 1100 watts, haha. That's what confused me, I think...
That is because they are a vendor and do not want any liability and they have to cover themselves for all the cheap crappy 1100watt units that they sell from not so respectable manufacturers who exaggerate the output of their PSU's.