Do I need a bigger power supply?

[reverii]

Currently running a Thermaltake 650w

Here's what i've got:

Intel i5-750
ATI 5850
Asus P7P55D-E Pro
Western Digital 320g Hard Drive.

Should I step it up or will I be ok?

Doing all gaming.

 

[Timop]

You'll be fine, the 5850+i7 uses barely 300W on load.

Which model to be exact though? If you want to crossfire some models wont be able to handle it.

 

[reverii]

Eh if I ever decide to run crossfire, I will definately be buying an 850

 

[Timop]

A top-quality 650W will power 2 5850s will plenty of headroom actually.

 

[seanny]

You are ok in that area but let me ask are you overclocking your cards or your i-7?

 

[JohnnyLucky]

Here are the official power requirements for the ATI Radeon HD 5850 and HD 5870 video cards.


ATI Radeon™ HD5850 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

500 Watt or greater power supply with two 75 watt, 6-pin, PCI Express® power connectors.

600 Watt or greater power supply with four 75 watt, 6-pin, PCI Express® power connectors for ATI CrossFireX™ technology in dual mode.


ATI Radeon™ HD5870 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard.

500 Watt or greater power supply with two, 75 watt, 6-pin, PCI Express® power connectors.

600 Watt or greater power supply with four, 75 watt, 6-pin, PCI Express® connectors for ATI CrossFireX™ technology in dual mode.

The power supply recommendations are for an entire pc system.