GTX 670 And GTX 660Ti PSU Question

Hey, i'm wondering if i can either run a 660ti pr a 670 on my current psu. I only have the cash to buy a graphics card, and not a psu.

Here's my specs, can anyone help me out? :)

Intel Core i7 950 @ 3.07GHz

6.00 GB Triple-Channel DDR3


Gigabyte Technology Co., Ltd. X58-USB3


ATI Radeon HD 5770

4 answers Last reply
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  1. Forgot to put my current PSU, it's a 500w Corsair.
  2. You should be fine with either card.
    Corsair is a quality manufacturer and makes great PSUs. The 670 needs 30 amps total on the 12 v rail. The 660 Ti needs less.
    The least expensive 500 watt Corsair has 34 amps on the 12 v rail.
    if this is wha you have you are fine.
  3. Cheers for the quick replay man, it's been bugging me all day. I thought everything was down to the cards wattage draw, as my current card takes 108w max, and it says a 670 takes 170w.

    Thanks :)
  4. It depends on the total draw of the system in reality... The gpu manufacturers give PSU recommendations based on plenty of wiggle room. The newer cards are extremely efficient and the wiggle room is even greater.
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