Is corsair 620w psu enough for x2 3870x2's?

stevenazari1 · 19 Jan 2008 at 13:34

I just got a corsair hx 620w power supply and getting 2 3870x2's next week, is it enough to power it?

I got:

q6600
2gb ocz ddr3
p5e3 deluxe mobo
x2 500gb WD sata
sound blaster xfi
arctic freezer 7 pro
multi function floppy disk
blueray rw & hd dvd rom

Watercooling with 2 loops when the 3870X2 blocks come out

.... I just seen a thread with a guy with a 580w psu might struggle or somehting.... any advice? should I get a bigger psu?

Fire Wizard · 19 Jan 2008 at 13:35

Hello stevenazari1, the Corsair HX 620W will be absolutely fine.

(Edit) I do apologize, reading through your post again, I have confused myself.

Do you mean, will the Corsair HX 620W power two Radeon HD 3870 X2 (ATI's new graphics card) or two standard 3870?

stevenazari1 · 19 Jan 2008 at 13:52

I'll have 2 3870X2's

Im wondering because its 2 gpu's for each card >.<

Klo · 19 Jan 2008 at 14:03

The chances are it will, as the Cosair range is high quality and pretty stable. However, don't quote me on this

J1nxy · 19 Jan 2008 at 14:28

Mine couldn't run 2 2900s with a similar spec machine

stevenazari1 · 19 Jan 2008 at 14:42

J1nxy said:
Mine couldn't run 2 2900s with a similar spec machine

what happened with yours? did you have to change it? it didnt damage did it?

stevenazari1 · 19 Jan 2008 at 20:12

oops I forgot to mention I'll be running 2 watercool loops through this when the 3870X2 blocks come

loop 1 cooling 2 3870X2's
loop 2 cooling cpu + northbridge

snowdog · 19 Jan 2008 at 20:19

4 High power gpu's? I don't know guys might be pushing it for quad crossfire.

stevenazari1 · 19 Jan 2008 at 20:21

J1nxy · 19 Jan 2008 at 22:59

stevenazari1 said:
what happened with yours? did you have to change it? it didnt damage did it?

Stability went out the window with the thing rebooting randomly. I stuck a Toughpower 850 in and things improved dramatically

LeJimster · 20 Jan 2008 at 00:45

I was wondering this aswell, I thought it might just work but a little more horse power is needed eh?.. Guess I'll have to upgrade my PSU if I really want more than one Graphics card then.

LeJimster · 20 Jan 2008 at 00:51

J1nxy said:
Mine couldn't run 2 2900s with a similar spec machine

Bare in mind though that the 2900 is a powerhog, I wouldn't be suprised if the 3870 X2's didn't need as much power. I guess we really need the NDA removing so we can see whats the real deal with this graphics card.

stevenazari1 · 20 Jan 2008 at 03:09

hmm so you recommend an 800w?

fornowagain · 20 Jan 2008 at 03:24

The pics show 2x6 pin connectors on the X2. So less than 225W and more than 150W. Take the high side, a small overclock say 180-200W a piece. 180-200W for the OCed quad. 2 loops and the rest? 650W easily. You're asking a lot for 50A Corsair. A 60A psu would be a safer bet, maybe something like the 750w Thermaltake for similar money? Or the Corsair TX750W / PCP&C Silencer 750 for a bit more.

stevenazari1 · 20 Jan 2008 at 05:12

Think I'll go to a 800w just to be safe.

james.miller · 20 Jan 2008 at 05:53

J1nxy said:
Mine couldn't run 2 2900s with a similar spec machine

i dunno why, they manage 2x 8800gtx's fine

J1nxy · 20 Jan 2008 at 08:57

...maybe its because the 2900xt pulls more power under load than the 8800gtx

PhillyDee · 20 Jan 2008 at 13:34

Plus, if hes watercooling 2 loops through too, id go for more power, the corsair will probably manage fine, but if you are buying the PSU now, and we dont know what the power requirements are for the X2's, it might be better to take the safe option of a 750W PSU.

simonnance · 20 Jan 2008 at 17:22

IIRC the 620W only has 2xPCI-E (6 pin) power, whereas the 750W has 4x PCI-E (8 pin)

TBH, i'd think that 4x GFX on a 620W PSU, even the corsair, would be pushing it a fair bit.

J1nxy · 20 Jan 2008 at 17:35

The 620w now comes with 4 PCI-E connectors, but I'd still go 750+ with the loads he's looking to put on the thing.