500 Watt PSU good enough for 4870

is my 500 watt antec earthwatts psu good enough for my 4870 512mb gddr5? because it ran at first but when i put it back into my computer and try to power it on, power fluctuates and then it satys on but i have no video. Its a Visiontek brand 4870. Any answers would be helpful :)

heres the link to my psu

i bought it from staples

http://www.staples.com/office/supplies/p1_Power-Supplies_180296_Business_Supplies_10051_SEARCH
9 answers Last reply
More about watt good 4870
  1. That also depends on other parts. But for typical systems, it should be good enough. Of course, any psu can be defective.
  2. heres my setup

    HP media center m8100n
    amd athlon x2 2.8 ghz 5600+
    3gb ram
    500 gb hard drive
    visiontek 4870 512mb
    sound blaster audio x-fi sound card
    and the antec 500 watt.
  3. ebaugh said:
    heres my setup

    HP media center m8100n
    amd athlon x2 2.8 ghz 5600+
    3gb ram
    500 gb hard drive
    visiontek 4870 512mb
    sound blaster audio x-fi sound card
    and the antec 500 watt.



    I have an Antec 500 watt psu and it works fine with my Visiontek 4870. I have had no trouble at all. See my specs below.
  4. yeah, i just re-installed my 4870, did some tweaking in catylast control center that i didnt know were there. But yeah, my 500 psu is working fine now for my card
  5. should be enough power maybe even a 2nd 4870 would work.
    =]
  6. Should be just fine, running two 4870s here and load shows as 545 watts during Crysis and 378 at idle.
  7. stoner133 said:
    Should be just fine, running two 4870s here and load shows as 545 watts during Crysis and 378 at idle.



    stoner133,
    What is the best way to tell how much power your rig is using? What do you use?

    Thanks!
  8. Should be enough. Might even be enough for a second 4870 but that might be pushing it. The good thing is, it has overvolt protection, so if it activates then the system will switch itself off and you'll know you need a beefier power supply.

    :sol:
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