Can a 400w psu run a 4850 or 4870 gpu?

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  1. no, the requirement of 6850 is 500watts or greater.
  2. 6850, yes, no problem.
    6870, pushing it a bit, and you don't have the connectors for it unless you use an adapter.
  3. vizzion said:

    I am wondering if I can run either a Radeon 6850 or 6870 on my 400W Corsair PSU.

    My current specs are: CPU i3 2100. HDD Samsung Spinpoint F3 1TB. 8gb ram.

    A Corsair 400 W is a good enough PSU for cards upto Radeon HD 6870, but you have to use a 6 pin adapter cable. If you have the spare cable (normally comes with the card) you can use a Radeon 6870 or else a Radeon 6850 should be ok. ;)
  4. pro-gamer said:
    no, the requirement of 6850 is 500watts or greater.

    AMD says 500w as an extra considering cheap quality PSU's NOT from high quality brands like Corsair, Cooler Masters, Antec etc :kaola: :kaola:
  5. One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260 - a card with similar power requirements to a 6870, a Gigabyte EP45-UD3P motherboard, 3 hard drives and an optical, and a Soundblaster card all powered by a Corsair 750TX.

    Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system pulls 300 watts from the PSU.

    A CX400 will handle the load.
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