950W rosewill psu enough for 4870x2 crossfire?

[Nica Guy]

?

 

[br3nd064]

Could you post a link for it? Rosewill PSU's generally aren't the best quality, so I'd probably look into a different brand.

 

[dagger]

It depends on 12v rail ratings. Rosewill units can be a bit flimsy, quality can be poor, so it's probably not a good idea to push it too far.

If it's this unit, it should do.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182096

Although 12v rail ratings are on the low side. My 850w unit has the same 4x20amps.

 

[rangers]

go hear

http://www.jonnyguru.com/forums/showthread.php?t=3990
Corsair is the best at the moment you could find a company that buys of the same company that makes Corsair but sell's them cheaper

 

[nukemaster]

Dual X2's take about 42.5amps together leaving 25amps(67.5 - 42.5) on the 12 volt rail for the rest.

As long as it holds its specs you are fine.

Remember while each "Rail" is limited(for safety reasons) to 20a there is only 67.5 to go around. Adding rails does not work

If it was 80 it would be
20 x 4 = 80
80 x 12 = 960watts(thats over the full psu )

 

[nukemaster]

go hear

http://www.jonnyguru.com/forums/showthread.php?t=3990
Corsair is the best at the moment you could find a company that buys of the same company that makes Corsair but sell's them cheaper

great link!

 

[rammar16]

the recommended amount is a 1k watt and i would say a better brand

i would get the corsair 1k watt it is about $220 i believe the 950watt by rosewill is about $190 so it isn't that bad

hope this helps

 

[Nica Guy]

what about this one?
i dont find it expensive for the wattage it has...

http://www.newegg.com/Product/Product.aspx?Item=N82E16817159067

also, im a noob at power stuff what are amps for? does it have a translation to watts?

 

[dagger]

the recommended amount is a 1k watt and i would say a better brand

i would get the corsair 1k watt it is about $220 i believe the 950watt by rosewill is about $190 so it isn't that bad

hope this helps

Considering the cost of higher wattage psus, it might be more cost effective to get a mainstream psu plus an expansion, like those:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153069
http://www.newegg.com/Product/Product.aspx?Item=N82E16817104054

what about this one?
i dont find it expensive for the wattage it has...

http://www.newegg.com/Product/Product.aspx?Item=N82E16817159067

also, im a noob at power stuff what are amps for? does it have a translation to watts?

The rail ratings there isn't that much better, with 12v rails 3 and 4 being 25 instead of 20 amps. It should be enough. Bust cost is high. Also, Coolmax CUQ models are listed as tier 5, which is pretty bad. CTG units are tier 2, but that's not it.
http://www.xtremesystems.org/forums/showthread.php?t=108088

You're still better off with a much cheaper good quality mainstream psu plus an expansion.

Consider this combination:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009
The $30 off on promo code wasn't included in sticker price. This unit is considered the gold standard in psu. It's more than enough to support one x2 and rest of the system.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153069
This expansion is more than enough to power the second x2.

 

[Nica Guy]

so why dont u suggest a good psu for 4870x2 crossfire?
between $170 and $220

 

[Nica Guy]

or tell me what should i look in a psu?

 

[dagger]

or tell me what should i look in a psu?

Good 12v rail ratings plus quality. Prices increase drastically when wattage moves above mainstream. You should really consider a setup like this instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009
The $30 off on promo code wasn't included in sticker price. This unit is considered the gold standard in psu. It's more than enough to support one x2 and rest of the system.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153069
This expansion is more than enough to power the second x2.

 

[Nica Guy]

what about this one?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

 

[dagger]

what about this one?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

Higher quality unit, although a single 750w unit just won't be enough to power a full system plus 2 4870x2s.

 

[Nica Guy]

Good 12v rail ratings plus quality. Prices increase drastically when wattage moves above mainstream. You should really consider a setup like this instead:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009
The $30 off on promo code wasn't included in sticker price. This unit is considered the gold standard in psu. It's more than enough to support one x2 and rest of the system.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153069
This expansion is more than enough to power the second x2.

WOW it has a 20% off coupon i bought it...
thanks dagger...

 

[Nica Guy]

hey, how do i claim the coupon? it asks for security code...

 

[Nica Guy]

ok i was in the wrong place... i got it... for $116 THATS A GOOD DEAL...

 

[rdb]

v rosewill ^ PcPower, Corsair