Solved

Help choose one of these two Corsair PSUs

Here are my system specs:

Processor: Intel Core i7 920 2.66GHz
Motherboard: EVGA 132-BL-E758-A1 X58 3-Way SLI Core i7 Motherboard
RAM: Corsair XMS3 3x2GB Tri Channel 1600Mhz
Graphics: HD 5850 Crossfire (if availability improves) or GTX 275 SLI
HDD: 2 x 640GB WD Caviar Black (RAID 0)
Chassis: Antec 1200 (comes with a whole bunch of fans)

Apart from this, I have the usual peripherals: Blu ray drive, sidewinder X6 gaming keyboard, mouse, 1Tb external HDD etc etc.

My PSU choices:

http://www.amazon.com/Corsair-CMPSU-750TX-750-Watt-Certified-compatible/dp/B000X2677A/ref=wl_it_dp_o?ie=UTF8&coliid=I2SLWJI5RPPD5M&colid=5M276FD91BY3

AND

http://www.amazon.com/Corsair-CMPSU-850TX-850-Watt-Certified-compatible/dp/B001M3G42W/ref=wl_it_dp_o?ie=UTF8&coliid=I12MU0UALEUS5N&colid=5M276FD91BY3


Which one do you suggest?
3 answers Last reply Best Answer
More about help choose corsair psus
  1. Best answer
    Here are the official power requirements for the brand new ATI Radeon HD 5850 and HD 5870 video cards.


    ATI Radeon™ HD5850 System Requirements:

    PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

    500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended

    600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode


    ATI Radeon™ HD5870 System Requirements:

    PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

    500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended

    600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in • dual mode

    The power supply recommendations are for an entire pc system.

    Note - 40 amps for the 12 volt rail(s) and a grand total of four 75 watt, 6 pin PCI-e psu power cables for dual Crossfire.
  2. well, bot the Corsair PSUs seem to fulfill the requirements. Both come with 4 6-pin PCI-E power connectors.

    I dont' think I'll be needing 850W anytime soon, so I guess I'll go for the 750W PSU. Seems to be enough for now and with a certain amount of future proofing.

    Thanks JohnnyLucky
  3. You're welcome!
Ask a new question

Read More

Power Supplies Components