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4870x2 POWER question

Forum Graphic & Displays : ATI - 4870x2 POWER question

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How big of a PSU will I need. I read it recomends a 650w

4 my new build
asus p45
q6600 oc 3.2
2x2g ocz 800
1 dvd burner
1 500g sata HD
4 case fans

I want to OC as much as I can will the corsair 650w TX have enough power? I really wana save some $ and not have to buy the 750w but I will if i need to.

THANKS

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Why are you getting a P45 board for a CrossFire setup like this? It will only do 8X x2 in Crossfire as opposed to the X38 or X48 boards which will do 16X x2 CrossFire.

Message quoted 1 times

------------------------------ Never under estimate peoples capacity for stupidity, and you won't be disappointed.
Reply to rgsaunders

he ain't going to be using two slots.

------------------------------ I'm a git, deal with it.

Antec 1200,PC Power & Cooling 750,Gigabyte DS4-x48,Intel Q9550@3.4 W/Xigmatek S1283,8GB OCZ DDR2 800,ATI 4870X2,X-FI>CA 640C amp>Tannoy R300/Senn 595's
Reply to strangestranger

im pretty sure tat psu will b enough for 4870x2. I got the same psu and waiting 4 the same graphics. i got no worries. It looks pretty powerful with 52a on the 12v rail. Wonder how many 6 pin connectors the 4870 is gonna have, 4870 has two 6 pin...perhaps two 8 pins

------------------------------ why have sex when u can play computer games?!?
Reply to thepinkpanther

he means sparta the single card i think? But anyways if it says 650 then you will be find because they normally over estimate and that corsair is really like a 700watt compared to cheap power supplys.

Reply to jpbg

rgsaunders wrote :

Why are you getting a P45 board for a CrossFire setup like this? It will only do 8X x2 in Crossfire as opposed to the X38 or X48 boards which will do 16X x2 CrossFire.

i agree. i like having options when i buy computer parts even if i ain't using it at the moment. i would rather get a x38/48 board just in case you ever go CFx

------------------------------

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Reply to aznguy0028

It's definately not enough for 4870x2 plus an oced 65nm quad. It'll boot, but crush on full load. Brands aside, a tractor made by BMW is still just a tractor. When it's not enough, it's not enough. You'd need at least 750w with good 12v rail ratings, ideally 850+w just to be safe and leave some headroom.

Message quoted 1 times
Message edited by dagger on 07-13-2008 at 11:29:00 PM

------------------------------ Q6600@3.6ghz, GA-EX38-DS4 motherboard, 8gb 800mhz ddr2 4-3-3-12, 8800GTS(g92)@780mhz, 1TB + 1.5TB hdds, 850watt psu
Reply to dagger

you know people have been saying that for years and they have always been wrong. you still are.

dagger wrote :

WTF? since when is a corsair 650 a "tractor" ?

Go ahead and run your 850w psu and waste all the electricity you want. I hear energy is cheap right now.

Reply to bigbruver

Thanks guys take a look at these

http://forums.vr-zone.com/showthread.php?t=299884
requires a 650w 1-6pin 1-8 pin

http://extreme.outervision.com/psucalculatorlite.jsp
If you use that with my set up it only comes out to 542watts

Reply to licid24

I'm looking to get a 4870x2 and I have a OCZ 700w gameXstream. So I guess that would run it. And it has 4 12v Rail with 18A on each (for I guess 48A total) is that good?

------------------------------ Have No Fear...Master Chief Is here
Reply to geckoar

thats a great PSU
BTW using that link I gt it says u need 1 6pin 1 8pin and i think urs has 2 6 pins. need somthing for that

Reply to licid24

It has 1 6 pin and 1 6+2 pin(Would that be 8 pin?) http://www.ocztechnology.com/produ [...] sli_ready_ its near the bottom of the page. Would that work? for a 4870X2.

------------------------------ Have No Fear...Master Chief Is here
Reply to geckoar

Its a little premature to be guessing on the power consumption an HD 4870X2, seeing as we haven't yet seen any real info on the product. You can take a wild assed guess based 4870 x 2 but that is no guarantee. Just wait for it, or else make sure you add a comfortable margin just in case. Also, when using that power supply calculator, make sure you include your planned overclock on the cpu, and allow 10-20% at least for capacitor aging.

------------------------------ Never under estimate peoples capacity for stupidity, and you won't be disappointed.
Reply to rgsaunders

Wait... its near the top under Connectors. sorry.

------------------------------ Have No Fear...Master Chief Is here
Reply to geckoar

ok yeah 6 and 6+2 will work great. Ill probably get the gamexstream then since it has the right connectors

Reply to licid24

from the initial reference boards for the 4870 x2 had a 6 and an 8 pin connector and it looked like it could run with just 2 6 pins

Reply to daft

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