Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > need help!! Wattage question...

need help!! Wattage question...

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - need help!! Wattage question...

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jisheria   09-04-2009 at 06:23:29 PM

im about to build a new system but im not sure which corsair psu to choose between 620w, 750w or 850w :sweat:
but most likely, this will be the parts for now and i'll be completing all the fans of the antec 902 case while planning to sli my gpu in the near future..


cpu intel i7-920, 2.66ghz
mobo asus P6T DELUXE
gpu GTX 260 sp 216
DDR3 Corsair dominator ,TR3X6G1600C8D,88820
hd 500gig SEAGATE 16MBcache ST3500418AS
dvdRW samsung sh-s223
CASE ANTEC 902
LCD SAMSUNG 23" (P2370G)

will a 620w psu work? or do i need more than that to supply the 2 gpu in the future considering a lot of fans installed in the antec case?

thanks!


Message edited by jisheria on 09-04-2009 at 06:26:45 PM
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saint19   09-04-2009 at 08:04:24 PM
- 0 +

IMO is good.

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 Reply to saint19
jisheria   09-04-2009 at 08:07:17 PM
- 0 +

thanks but are you sure it can sli two gtx 260? ^^,

Reply to jisheria
mindless728   09-04-2009 at 08:13:59 PM
- 0 +

i would get the corsair 750tX, it may be a bit more than what you need, though it would have enough pci-e connectors 9so no adapters), plus its only $100 @ newegg.com

Corsair CMPSU-750TX


Message edited by mindless728 on 09-04-2009 at 08:14:15 PM
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jisheria   09-04-2009 at 08:43:21 PM
- 0 +

cool!! thanks a lot^^

Reply to jisheria
jisheria   09-04-2009 at 09:06:50 PM
- 0 +

but how about corsair 750w hx series? would that be enough even to sli gtx 275's?

Reply to jisheria
jsc   09-04-2009 at 09:34:19 PM
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If you are going SLI your video cards, you will be using most of the cables on a TX750. And if you are going to be using most of the cables, modular is a waste of money.

Reply to jsc
jisheria   09-04-2009 at 10:36:57 PM
- 0 +

ouch! im sorry i wasnt able to catch up^^ what do you mean by modular is a waste of money?
i guess what i wanna make sure of is that corsair hx series 750w psu can sli two power hungry gtx 275 efficiently^^

thats what i trully worrying for right now, i dont wanna end up purchasing a bomb that will blow up my system Y_Y

Reply to jisheria
ShtBrix   09-06-2009 at 10:27:02 PM
- 0 +

An HX750 is the modular version of the TX750. It would work fine. But, as jsc said, if your going to SLI 2 GTX260's, you'll be using most of the cables, so paying extra for the modular isn't worth it.

Reply to ShtBrix
jisheria   09-07-2009 at 07:37:40 PM
- 0 +

oh i see!!! so tx750 would be just fine!!^^ cool!
thanks!

but can it power two gtx 275 in sli as well? or twi hd 4890?

Reply to jisheria
jsc   09-07-2009 at 09:33:57 PM
- 1 +

Yes, easily. Corsairs are very conservatively designed. One of the tech sites tested the TX750. They were able to pull more than 900 watts out of before it electronically shut down. Most PSU makers would call it a 900 watt PSU.

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