HD 4850 Power Requirements?

I apologize if this has already been covered but I haven’t seen it.

Does anyone know the power usage of the HD 4850? I just put together a new rig (long over due) should be arriving tomorrow but I’m starting to become concerned I’ve short changed myself on the PSU.

Here are the specs:

NZXT Tempest SC-NT-TEM-B Case.
Gigabyte GA-X48-DS4
(2) HD 4850 X-Fire
4 Gigs DDR2 1066
E8400
(3) Hitachi 7200RPM SATA Drives
LG DVD burner

There are 5 fans on the case, LED lights, and of course an aftermarket cooler for the CPU. Plan on a moderate OC on the E8400 (3.6ish).

The Power supply I thought would run all these goodies: Corsair CMPSU-750TX, http://www.corsairmicro.com/products/tx.aspx

Now I’m seeing 200+ Watts for the HD 4850 if that’s the case I’m afraid this might really push my PSU. Any thoughts?

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ATI Radeon HD 4850 System Requirements
o PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
o 450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)
o Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
o Minimum 1GB of system memory
o Installation software requires CD-ROM drive
o DVD playback requires DVD drive
o Blu-ray™ playback requires Blu-ray drive
o For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4850 graphics card, an ATI CrossFireX™ Ready motherboard and one ATI CrossFireX™ Bridge Interconnect cable per graphics card are required





Force3D™ Radeon HD 4870 System Requirements
o PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
o 500 Watt or greater power supply with two 75 Watt 6-pin PCI Express® power connector recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
o Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
o Minimum 1GB of system memory
o Installation software requires CD-ROM drive
o DVD playback requires DVD drive
o Blu-ray™ playback requires Blu-ray drive
o For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4870 graphics card, an ATI CrossFireX™ Ready motherboard and one ATI CrossFireX™ Bridge Interconnect cable per graphics card are required