PSU for 2 4870X2

Thread title says it all.

Have Corsair 1000w PSU (CMPSU-1000HX 1000W RT)..... If I go nuts and get another 4870X2 (total =2 GPU)....the Corsair gonna cut it?
Probably just wishful thinking since I just bought the PSU :o

If no....what level do I need 1200w, 1300w ?
Brand rec ?...Corsair and Antec do not seem to have PSU at this level. PC Power and Cooling is not modular and $$$. These are the high end brands I hear recommended.
Modular is also a must have. :non:

Other components.......

Quad Core CPU
2 HD
2 opticals
1 Sound Card
1 Fan contoller
8 x 120 mm fan, 1 x 240 mm fan


THX!
10 answers Last reply
More about 4870x2
  1. If 12v rails ratings are good, it should be enough for a quad plus 2 4870x2. All the fans and cd/dvd drives are just change.
  2. Make sure that Corsair has the right connectors.
  3. resonance451 said:
    Make sure that Corsair has the right connectors.


    Doesn't matter, the cards comes with molex to pcie adaptors.
  4. Make sure it has Nukler Reactor attached as GWB would say. I think it will be okay.

    We really need feedback in this as it's new territory.

    Wonder when my PC will need a 50 amp feed to the AC outlet?
  5. Probably should just go with the flow and keep what came in the mail from Newegg :ange: I already did a last minute change and went from 8500 Dual Core to a 9550 Quad Core :kaola:

    Not even sure if I will get another 4870x2 at this point. Gonna have to buy a larger monitor (I am hearing 28-20") anyway to make quad Crossfire worth the effort. I do not want to have a "nuclear reactor" PSU if I do not really need it. On the other hand, I do want the room if I choose to add the second GPU. :ouch:

    I am not sure if I have seen any benchmarks on quad Crossfire with two 4870x2 GPU's. Any link on a benchmark for this set up?
    I suspect, the FPS gain would not be that much over the one 4870x2 GPU to notice any difference.
  6. I would think that psu can handle that setup. If not, this is a new era we are entering where the 1000 watt + psus are truly being utilized, finally...
  7. englandr753 said:
    I would think that psu can handle that setup. If not, this is a new era we are entering where the 1000 watt + psus are truly being utilized, finally...


    Performance is underwhelming.
    http://www.tweaktown.com/reviews/1541/9/sapphire_radeon_hd_4870_x2_in_crossfirex/index.html
    Look through all pages for other games. The scaling problem is certainly not limited to Crysis.
  8. Now Im starting to wonder if CF 4870X2 is just overkill....
  9. ^your only just starting to wonder if 4 gpus are overkill?

    HD4870 single is more than enough for most people.
  10. Quote:
    Now Im starting to wonder if CF 4870X2 is just overkill....


    chookman said:
    ^your only just starting to wonder if 4 gpus are overkill?

    HD4870 single is more than enough for most people.


    Saw the benchmarks, anyone? 4870x2 cf is not overkill in games where it performs below a single 4870x2. Quad crossfire problems. Wait for updated drivers to come out, or it's just more money for less performance.
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