Will 750 Watts Power this SyStem

Mostly I am after wether or Not I chose a Big Enough Power Supply
I would have Gotten G-Skill, a different GFX Card and maybe changed a few other things
but the Distributors here in NZ are pretty stingy , Cant even get a Duorb Extreme here yet.

System -

Corsair Corsair CMPSU-750TX 750Watt ATX Power Supply
ASUS Asus P7P55D-E Pro Intel P55 Chipset Socket 1156 ATX Motherboard
INTEL Intel Core i7 860 2.80Ghz 8MB LGA1156 CPU with Heatsink and Fan
Zalman Zalman CNPS9900NT Low-noise 120mm Green LED CPU Cooler, Multi Socket, Ultra Quiet 110mm PWM Fan.
Corsair Corsair CMG4GX3M2A2000C8 4GB (2x XMS3 2GB) PC-16000 (2000MHz) DDR3 RAM, 2x240-pin DIMMs, Non ECC Unbuffered, 8-8-8-24, DOMINATOR GT with DHX+FAN
Sapphire Sapphire Radeon HD5870 Vapor-X HDMI DisplayPort Dual-DVI 1GB PCI-E Graphic Card
Western Digital 2x Western Digital Caviar Black WD1002FAEX 64MB 1TB 3.5" SATA Hard Drive
ASUS Asus DRW-24B1ST 24X SATA Black DVDRW Drive
Thermaltake Thermaltake V9 Black Edition VJ400G1N2Z Black Case

Suggestions are welcome for something of similar price you would use instead.
But I may have looked at it , but it's unavaliable here in New Zealand.
Thanks for your Oppinion

2 answers Last reply
More about will watts power system
  1. Oops forgot to mention im overclocking the 860 to 4Ghz
    and possibly O/Cing the 5870 depending on noise
  2. Quote:
    450w would power that system. If your overclocking your cpu and gpu, then go for a good quality 600-650w. If your going to overclock both AND add another 5870 later on, the go with a 750w.

    I am dubious about that because when i look at ATI and what they say is certified to run the card a 650 Corsair is not certified to run a 5870

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