Enough power for potential build?

[jsburruss1]

So I'm looking to put together my first build using the new Sandy Bridge processors. I made the mistake of ordering my i7 2600k before coming to a conclusion about which motherboard I wanted to buy. I went about buying the rest of the parts to the build while I deliberated on the Motherboard choice. Needless to say, the Cougar Point recall happened before I could place my order either for the Asus P8P67 Pro or the Deluxe. I am furious at myself for this, but that doesn't do me much good now. What I do need to know is how powerful my PSU needs to be to run my system. The complete system, when finally put together in April or whenever:

-COOLER MASTER HAF 932 RC-932 Case
-i7 2600k
-Asus P8P67 Pro or the Deluxe (still haven't decided obviously)
-EVGA GeForce GTX 580
-Patriot Viper Xtreme 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3
-WD VelociRaptor WD1500HLFS 150GB Internal Hard Drive
-WD Caviar Black WD6402AAEX 640GB Internal Hard Drive
-Windows 7 Ultimate 64-bit
-Standard DVD-RW drive

I have also made the rookie mistake of already buying a PSU; a CORSAIR HX Series CMPSU-850HX 850W.

So, to all of you more experienced persons, will this PSU run my proposed system effectively and relatively efficiently? I do plan on attempting a little over-clocking to the CPU. I would like it stable around 4300 to 4500 Mhz if that helps. Any advice would be greatly appreciated. Thank You.

 

[HOOfan 1]

Your PC would run on a quality 550W PSU, so yes the 850W is more than enough.

The HX850 will probably be from 85%-90% efficient at the load your PC puts on it, so yes it will run your PC efficiently.

 

[BoomerD]

That PSU would probably run two computers with your specs.

(of course, the cabling won't work...but you'd have enough power)

From my "How much do you NEED?" thread:

The specs of my rig:
CoolerMaster HAF 932 case with the stock fans
ASUS P7P55D-E Pro motherboard
i5-760 Processor
Noctua NH-U12P SE2 CPU cooler with both fans in push/pull
EVGA GTX 460 1 Gb Superclocked Card (1373AR)
4 x 2 Gb Corsair XMS RAM running in XMP 1600 MHz mode
1 Samsung SATA DVD burner
1 Samsung IDE DVD Burner

With stock clocks on the processor, this rig draws surprisingly little wattage:
after everything loads following boot sequence..maxed during load at 201, then dropped to 102, settled in at 94-96 watts at idle
Running Furmark @ 1024x768 in Extreme Burning mode: 300 to 310 watts. (310 with GPU fan at 100% for testing)

With the processor overclocked to 3534 MHz,:
Idle 140 watts, (maxed at 230 during boot & load process)
Furmark 1024x768 Extreme Burning Mode: 340 to 352 watts (GPU fan @ 100% for testing)

 

[jsburruss1]

Thanks fellas

 

[LiuKangBakinPie]

Its not a rookie mistake its good instincts there bro

 

[tomoyo]

Your only mistake was probably spending too much money. Otherwise you're in fine shape.

 

[Termie]

Yes, your PSU is way more than you needed. I'd be surprised if you ever hit 50% of its capacity, and in that sense, you won't be working at peak efficiency (~87%). Your peak load will be 350-375w, and you'll probably achieve about 85% efficiency at that level.

While you're waiting, pick up an SSD. No reason to run your OS off a 150GB velociraptor anymore. That's a rookie mistake!