Which PSU to use? Very confused

Hello guys, I will be building my first PC and I'd like some help

CPU : INTEL CORE I7-2600K 3.40 GHZ LGA1155 - BOX
1 DVD/CD drive combo
HDD : 2x 500 GB, 7200 RPM SATA 3 HDD's

For the time being ill be using my old nVidia GT220 as a GPU, untill I upgrade.

I am looking forward to upgrade the GPU and my hard disks, preferably to an AMD 7750 or 7770
I will be buying an SSD in the future, maybe 1-2 years?

My problem now is that i know nothing about PSU. If anyone can help on what PSU I can buy, or what is the recommended wattage it would be great!

PS. Q: If I overclock, will I require a more powerful PSU?
11 answers Last reply
More about which confused
  1. To keep it simple, I'll just suggest using a PSU calculator like this one: http://www.thermaltake.outervision.com/
    And go with a good name like Corsair, Seasonic, antec, etc.
  2. Thanks, but all the 1MW PSU I find are over 300$. Is it their normal price?
  3. This one is 200$

    I don´t think you´re gonna find a 1kw psu for less that that. good brand and 80+ gold efficiency even full modular.
  4. For a system using a single Radeon HD 7770 GHz Edition graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 23 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

    Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

    Overclocking of the CPU and/or GPU(s) will require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.
  5. whats ur budget for a ps and what country u live in?
  6. Around 150 US, I live in Cyprus
  7. +1 to toyftw recommandations good stuff :)
  8. Yeah, a 1MW PSU is major overkill for the components you listed. 500W+ for a single card, 700W+ for 2 cards.
  9. Even a 1 KW PSU would be overkill ;-)
  10. redtailed said:
    Even a 1 KW PSU would be overkill ;-)

    (That's what I get for cutting and pasting.) :(
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