Not sure if 550W is enough for gtx 560 ti

hello! i'm new here.

so the title says it all, basically i'm planning to purchase a gtx 560 ti graphics card but i'm not sure if my current psu can handle it. based on nvidia's website, the minimum is 500W but i'm not sure if this rating includes the other pc component.

my current build is:

CPU: Intel core i5-2400 3.10 GHz, 6MB Cache LGA1155
mobo: ASUS P8H67-M LE B3 Rev 3.0
vga: Palit GTS 450 Sonic (OC ed) 1024MB GDDR5
Ram: 2 G.Skill Ripjaws gaming series 4gb DDR3-1333 (total of 8gb RAM)
PSU: Cougar RS 80 Plus 550W
and a dvd-rw

i also have asus pa238q monitor if that's a factor.

and there were many variations of gtx 560 ti that adds to my confusion:
there is 2gb vram, 1gb vram, and a 480 cuda cores, do all these require same PSU W?
i hope to be enlightened, thanks!
6 answers Last reply
More about 550w
  1. In short, your PSU is fine for the ti flavour of the 560. Go ahead and swap out the 450gts for the 560ti. (Best not to try any over-clocking as the headroom is a little low)

    Enjoy.

    Q
  2. Flying-Q said:
    (Best not to try any over-clocking as the headroom is a little low)

    550 watts is plenty for overclocking, the low quality of the psu in question is a better reason not to
  3. yes. but swap your psu for a named brand with a good reputation
  4. Here's a review on a similar model, Cougar RS 650.....wattage of 650 is over rated especially at higher temps...and there is no over protection...bottom line, reviewer didn't recommend this PS:

    http://www.hardwaresecrets.com/article/Cougar-RS-650-W-Power-Supply-Review/1323
  5. I would be careful- i have a 560ti, 2g version.
    Playing BF3 and listening to iTunes one night, and i blew a cap.
    I would recommend a 600w to be safe.
  6. 550 watts on a good power supply is plenty for a single GTX 560 Ti. Need a good 650-700 watts for two GTX 560 Ti.

    Dave
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