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Power supply

Hi all,

I was wondering if anyone had any good power requirement calculators

I just used http://extreme.outervision.com/PSUEngine and I came out just under the 550W my PSU can pump (523W) and I since it was so close I wanted to double check before I went any further.

The aim is to put a X6 in my current system and probably put some DDR3 1600 in as well.

My current is

WD Caviar Black 500 gig 7200 rpm
(1) 92mm cpu fan (1) 120 mm fan and (2) 80 mm fan (all led)
Gskill 4 gig (2x2)
GeForce GTS 250
GIGABYTE GA-MA790X-UD4P AM3/AM2+/AM2 AMD 790X ATX
AMD 64 7750 Kuma OC'ed to 3.0

on a Corsair 550W 80+ PSU

If I do this the GTS 250 becomes the bottle neck and I doubt I can to get two GTS 250s on the 550W... so I really am not too sure how much sense this makes in general... I may be better off with a X3 and go with an SLI setup (this setup was also under the 550W). Now that I say it, the latter seems like a better idea... I would like opinions though. Thanks in advance everyone!
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  1. Best answer
    http://www.nvidia.com/object/product_geforce_gts_250_us.html

    For one card:
    Maximum Graphics Card Power (W) 150 W
    Minimum Recommended System Power (W) 450 W

    You'll want a ~900 watt power supply for SLI give or take 200 watts. Depends on what else you got running.

    ginnai said:
    Hi all,

    I was wondering if anyone had any good power requirement calculators

    I just used http://extreme.outervision.com/PSUEngine and I came out just under the 550W my PSU can pump (523W) and I since it was so close I wanted to double check before I went any further.

    The aim is to put a X6 in my current system and probably put some DDR3 1600 in as well.

    My current is

    WD Caviar Black 500 gig 7200 rpm
    (1) 92mm cpu fan (1) 120 mm fan and (2) 80 mm fan (all led)
    Gskill 4 gig (2x2)
    GeForce GTS 250
    GIGABYTE GA-MA790X-UD4P AM3/AM2+/AM2 AMD 790X ATX
    AMD 64 7750 Kuma OC'ed to 3.0

    on a Corsair 550W 80+ PSU

    If I do this the GTS 250 becomes the bottle neck and I doubt I can to get two GTS 250s on the 550W... so I really am not too sure how much sense this makes in general... I may be better off with a X3 and go with an SLI setup (this setup was also under the 550W). Now that I say it, the latter seems like a better idea... I would like opinions though. Thanks in advance everyone!
  2. I dunno why I didn't think to go to the specs page... that was a really good idea.
  3. A system (similar to what you're thinking about) with one GTS250 will use ~ 300 watts under full furmark load (which is more strenous than just gaming). A system with two 250s would be around the 450w mark, obviously you want some headroom, 80% under furmark is probably about right.
    http://www.anandtech.com/show/2731

    That motherboard doesn't officially support SLI, so you'd have to figure out a work around for it.
  4. get a 700w or 750w 80 plus certified psu.. just in case.. thats just me tho.. id rather be safe than sorry.. 550w with 2 gpu's? even if on paper it says itll work.. naaa... i wouldnt trust it..
  5. Best answer selected by ginnai.
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