What psu do i need for a gigabyte 5770

Hello
Quick question
What PSU is necessary for a;
intel i5-750
asus p7p55 lx
gigabyte radeon 5770
JW 2GB 1333Mhz x 2
WD 1TB Black Edition

Thanks
Brennan Mick
5 answers Last reply
More about what gigabyte 5770
  1. Bump?
  2. bumpidy bump?
  3. Overclocked CPU + Graphics - 500W
    Slight Overclocking on CPU alone + Graphics - 450W
    Overclocking CPU & Graphics - 500-550W
    Want to add more powerful Graphics later on - 550W

    And more importantly buy from a reputable company....
    Antec EA/ NEO/ TruePower Series, Corsair, Seasonic, Silverstone, CM Realpower/ Silent PRO, PCP&S, OCZ(Make sure you get the 80+ Certified ones)
  4. Also make sure that the PSU has at least one 75W 6-pin PCI Express® power connector.
  5. Here are the official ATI recommended power supply requirements for the ATI Radeon HD 5770 video cards:

    450 watt or greater power supply with one 75watt, 6-pin PCI Express® power connector

    600 watt or greater power supply with two 75 watt, 6-pin PCI Express® power connectors for ATI CrossFireX™ technology in dual mode

    The recommendations are for an entire pc system.

    The general rule of thumb is a high quality 500 to 550 watt power supply with sufficient current (amps) on the +12 volt rail(s) can easily power a system with any single video card made. A high quality 700 to 750 watt power supply with sufficient current (amps) on the +12 volt rail(s) can power a system with two video cards operating in dual mode. There are a few exceptions like the new ATI Radeon HD 5770 cards which use less power due to their energy efficiency.

    A high quality 500 to 550 watt psu will have a +12 volt rail rated at 40 amps. A high quality 700 to 750 watt psu will have a +12 volt rail rated at 60 amps.

    In addition the power supply should be at least 80+ Bronze certified for energy efficiency. There are some models available which have achieved 80+ Silver and 80+ Gold Certifications.

    Before purchasing a new psu you will need to decide whether you will eventually have a pc with one or two video cards.

    Corsair and Seasonic are two of the brands that have a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty. Lately we've been seeing a few other brands offering some high quality units. One example would be the Antec Earthwatts series which is a major improvement over Antec’s older psu’s like the Basiq models.
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