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11-05-2009, 01:39 AM
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#11 (permalink)
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Super Moderator
Join Date: Aug 2007
Location: Finland
Posts: 2,999
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not quite, a i7 rig with a single 5870 draws about 250W.
A 5870 is rated at 188W max (less when paired), so it might just be out of a 750W corsairs reach, but triple Xfire is well achievable.
__________________
NZXT Apollo, P5Q (Xigmatek Porter chipset cooler), Q6600 w/ S-1248 Achilles (w/ mounting kit), 4850, 4GB, 500GB+500GB RAID0 + 160GB backup
All stock, waiting for need to blow clocks up to the skies
Zepto Znote 6625WD: C2D 1.8GHz, 2GB, 8600M GT 512MB, 200GB/7200rpm, 1680x1050
Died once, fixed with a 200C oven! 
Forum rules
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11-05-2009, 02:34 PM
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#12 (permalink)
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Senior Member
Join Date: Jan 2009
Posts: 891
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Im kind of in the middle of this discussion
1000W is not required for a 2 card SLI/Xfire, no matter what it is (excluding maybe 2 295 GTX but that essentially is 4 graphic cards)
750W is more than enough for basically any 2 card setup.
However, if you are intending to use three or four cards then there might be a good reason to consider a 850-1k PSU.
An i7 with a 5870 can use more than 250w depending on how the system is stressed and overclocked. But I still agree that the 750hx can probably power 3 cards simply because in real life situations, the third card requires less power than the first two when gaming. But if you are going to 3-4 card level, you will probably draw want an 850W PSU+ anyways because running PSUs at constant 90-100% load is never a good thing
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11-06-2009, 08:17 AM
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#13 (permalink)
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Junior Member
Join Date: Nov 2009
Posts: 8
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I ended up going with a 850w (nonmodular) corsair. Does that sound like a better choice?-- saves quite a bit of money.
Now I need to find a 5870! Can't find one available..!!!
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11-06-2009, 08:57 AM
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#14 (permalink)
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Super Moderator
Join Date: Aug 2007
Location: Finland
Posts: 2,999
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850W Corsair is plenty enough.
5870s availability is a bit low atm as the demand is really high
__________________
NZXT Apollo, P5Q (Xigmatek Porter chipset cooler), Q6600 w/ S-1248 Achilles (w/ mounting kit), 4850, 4GB, 500GB+500GB RAID0 + 160GB backup
All stock, waiting for need to blow clocks up to the skies
Zepto Znote 6625WD: C2D 1.8GHz, 2GB, 8600M GT 512MB, 200GB/7200rpm, 1680x1050
Died once, fixed with a 200C oven!
Forum rules
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11-06-2009, 06:40 PM
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#15 (permalink)
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Junior Member
Join Date: Nov 2009
Posts: 8
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Yea, any other places beside tigerdirect, newegg and amazon that might have stock?
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11-06-2009, 06:48 PM
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#16 (permalink)
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Senior Member
Join Date: Jan 2009
Posts: 891
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11-06-2009, 07:08 PM
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#17 (permalink)
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Junior Member
Join Date: Nov 2009
Posts: 8
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How much do brands matter?
XFX
EVGA
ASUS
Sapphire
Power
MSI
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11-07-2009, 05:43 PM
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#18 (permalink)
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Junior Member
Join Date: Nov 2009
Posts: 8
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Alrighty - all ordered
Motherboard:
ASUS P6T Deluxe V2 LGA 1366 Intel X58 ATX Intel Motherboard
Processor
Intel Core i7-920
Video Card
ATI Radeon 5870
Power Supply
CORSAIR 850 Watt (not the modular one)
Memory
CORSAIR XMS3 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Hard Drive
WD Caviar Black WD2001FASS 2TB 7200 RPM 64MB Cache SATA 3.0Gb
CPU Cooler
Scythe MUGEN-2 SCMG-2000 120mm Sleeve CPU Cooler
Case
Silverstone Fortress FT01
Optical Drive
Plextor 24X SATA DVDRW
Cooling CMPD
ARCTIC COOLING MX-2 Thermal Compound
Thanks for your input and help guys!
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