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HOW MUCH WATTAGE IS NECESSARY????

Last response: in Components
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August 12, 2011 5:03:32 AM

Hello, I need help configuring my first pc build. It will mainly be for gaming (Battlefield 3, among other games). how big of a power supply is necessary for this build and possibly for future expansion using dual video cards??


Mobo: ASRock P67 EXTREME4 (B3) LGA 1155 Intel SATA 6Gb/s USB 3.0

CPU: Intel Core i5 2500k

Video Card: SAPPHIRE Radeon HD 6870 1GB

Case: Antec 300 Blk Steel ATX Mid Tower

PS: Antec High Current Gamer Series 750W <---------------------Too Much?

Memory: G.SKILL Ripjaws Series 8GB (2 x 4GB)

Storage: SAMSUNG Spinpoint 1TB 7200 RPM

Mouse: Logitech G500

More about : wattage

a b ) Power supply
August 12, 2011 9:33:47 AM

SAPPHIRE Radeon HD 6870 1GB power consumption 247W default and system not more than 250 W , i think you need 560 like Seasonic or Corsair VX550

PS: Antec High Current Gamer Series 750W is too much for single card HD 6870 and enough for Crossfire
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a c 89 ) Power supply
August 12, 2011 9:57:08 AM

560W Heny? Way to much. A quality 450-500W PSU will be fine. 650-750W if you want to CF.
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a b ) Power supply
August 12, 2011 10:59:20 AM

560 to much he he. Just assume antisipate @OP do OC , he don't limit power
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Best solution

a c 83 ) Power supply
August 12, 2011 11:32:36 AM

A 6870 will not take much over 160 watts under extreme load.

I would not call a 750 watt power supply overkill in the sense, but less efficient then running a good 450 watt psu.

The 750 is a good idea if you plan for a future upgrade.

At current, with a more power hungry cpu and video card, I have a hard time pushing 350 watts of power use(With prime95 + games).
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August 12, 2011 2:48:49 PM

i do plan on crossfiring in the future. so will using a 750W psu now degrade my rig's performance in any way?
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a b ) Power supply
August 12, 2011 3:01:22 PM

No .. it's good and more power for single card
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August 22, 2011 12:23:42 AM

Best answer selected by mucho mangos.
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