Help with powersupply+crossfire

[Nightsight]

Hello
I recently bought a new computer, and I'm planning to run ATI Crossfire with 2x Sapphire Radeon HD 5850 "Toxic" edition.

However, I'm wondering if my Chieftec Super Series 750W PSU ATX 12V V2.3, 80 Plus, Modular, 2x 6pin+2x 6+2pin PCIe, 8x SATA, 140mm will be able to supply enough power.
this is what I got atm:

Motherboard: Gigabyte GA-890GPA-UD3H, Socket-AM3 ATX, AMD890GX+SB850, DDR3, 2xPCIe(2.0)x16, SATA 6Gb/s, USB 3.0, VGA, DVI, HDMI
Processor: AMD Phenom II X6 1090T Black Edition Six Core, 3,2Ghz/3,6GHz Turbo, AM3, 9MB, 125W, Boxed
Watercooling: Corsair H50 Hydro Series CPU Cooler
Ram: Kingston ValueR. DDR3 1333MHz 4GB, CL9 Kit w/two matched ValueRAM 2GB DDR3
Graphic card: Sapphire Radeon HD "toxic" edition 5850 1GB
cd/dvd reader: Sony Optiarc DVD±RW burner AD-5260S
hard drive: Western Digital Caviar® GreenPower™ 1TB Sata 3 Gb/s, 64MB Cache
SSD hard drive: Corsair SSD Force Series 2,5" 60GB SATA2, 285MB/275MB/s read/write, incl 2,5" to 3,5" bracket

so yeah, basically wondering if I can run crossfire with 750W power supply

[pansertjald]

you will be fine with the Chieftec 750watt PSU. Chieftec is a realy good PSU brand and 750watt will be more then enough for your system in CF

[Moobious]

From the cards I have looked at the 5850 only needs 75watts a card (that is like 8 amps) so a 750 is fine for dual cards.

Unless you already have one 5850 I would go with 6870s.

[Cilraaz]

From the cards I have looked at the 5850 only needs 75watts a card (that is like 8 amps) so a 750 is fine for dual cards.

Unless you already have one 5850 I would go with 6870s.

That's a gross underestimate.