Hi, just a quick question about the Corsair 750w PSU. I've recently got one of these and two HD4870s in Crossfire. I use them in an antec 900 case.
Thing is that the PSU during load gets really loud, it did not do that with only one 4870 (tried that first) but when I added a 2nd it got much louder and are much worse than the two graphics cards (with the fans at a reasonable speed).
So my question is; could the problem be because of heat? Since I have the antec 900, the PSU and the 2nd card are pretty close to eachother so perhaps there's more heat getting stuck there, which causes the fan to speed up.
Or could it be because the load is much heavier on the PSU with two graphics cards than one and therefor it goes warmer -> higher speed on fan.
I was thinking about changing to another case that perhaps has the PSU a bit more isolated (like P182) from the rest of the components so then perhaps it wouldn't have to speed up as much? That is only if it's a heat issue because of the 2nd Graphics card being too close to the PSU.
If it's because the PSU have to work harder than before due to now having an extra GPU then I guess it wouldn't make a difference to switch case.
Thing is that the PSU during load gets really loud, it did not do that with only one 4870 (tried that first) but when I added a 2nd it got much louder and are much worse than the two graphics cards (with the fans at a reasonable speed).
So my question is; could the problem be because of heat? Since I have the antec 900, the PSU and the 2nd card are pretty close to eachother so perhaps there's more heat getting stuck there, which causes the fan to speed up.
Or could it be because the load is much heavier on the PSU with two graphics cards than one and therefor it goes warmer -> higher speed on fan.
I was thinking about changing to another case that perhaps has the PSU a bit more isolated (like P182) from the rest of the components so then perhaps it wouldn't have to speed up as much? That is only if it's a heat issue because of the 2nd Graphics card being too close to the PSU.
If it's because the PSU have to work harder than before due to now having an extra GPU then I guess it wouldn't make a difference to switch case.