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Unsure of what size power supply to use

post #1 of 8
10/18/12 at 7:57pm
Thread Starter 
I am going to be putting 2 ZOTAC ZT-50403-10L GeForce GTX 550 Ti (Fermi) 1GB 192-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Cards in the computer build I am doing. I have an 850 watt power supply selected, I just want to make sure that it will be sufficient with running these two cards. Other components include:GIGABYTE GA-Z68XP-UD3P LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard, Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155, etc.

Any help would be appreciated!

Thanks!
-Silent33
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post #2 of 8
10/18/12 at 7:59pm
850 Should be plenty. Are you doing any watercooling or anything?
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post #3 of 8
10/18/12 at 8:02pm
Thread Starter 
Not as of right now. I have not bought anything yet still deciding, but I figured if I did liquid cooled then I would have to get a bigger power supply. Otherwise for now then the 850 would be good?
The Beast
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post #4 of 8
10/18/12 at 8:03pm
Yea, 850 should be fine. and as long as you stick to a single loop/pump on the WC, you might not even need to upgrade the PSU later on.

EDIT: Here you go, nice handy little tool for the future wink.gif

http://www.thermaltake.outervision.com/
Current AMD build
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OCZ Agility 3 WD Caviar Blue  LG 24x DVD/RW Corsair H100 
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Hard DriveHard DriveOptical DriveCooling
OCZ Agility 3 WD Caviar Blue  LG 24x DVD/RW Corsair H100 
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post #5 of 8
10/18/12 at 8:09pm
  • stubass
  • Want to go sub-zero and bench :)
if your talking about that corsair 850w in your sig, yeah just recycle that into your new build.. BTW which model is it?
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A not so cheap beast
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Wife's Rig
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Synology DS710+ NAS
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i7-3770k Gigabyte GA-Z77X-UP5 TH Asus HD7950 DCII Summer has killed my OC :( G.Skill TridentX 2400 2 x 4GB 
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Samsung 830 128GB Plextor M5p 128GB 2 x WD 500GB Blues LG 
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I5-3570K Gigabyte Z68X-UD3H-B3 MSI GTX460 Cyclone 1GD5 8GB G.Skill RipjawsX 1600 
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Crucial M4 64GB WD black 500GB Liteon Coolermaster Hyper 212+ EVO 
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post #6 of 8
10/18/12 at 8:11pm
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You'd probably be fine with a 500 or 550W PSU. 850 is mega overkill.
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post #7 of 8
10/18/12 at 8:18pm
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Quote:
Originally Posted by DEcomputers View Post

Yea, 850 should be fine. and as long as you stick to a single loop/pump on the WC, you might not even need to upgrade the PSU later on.
EDIT: Here you go, nice handy little tool for the future wink.gif
http://www.thermaltake.outervision.com/

550 Ti's draw very little watts.

OP,

That would run on a good 500w..
However 2 550 Ti's is not worth it at all... Don't do that.
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post #8 of 8
10/18/12 at 8:33pm
Thread Starter 
Alright thanks everyone for the help! The brand is Corsair for the new 850 as well. It is not going to be my PC its one I am building for a friend. But thanks everyone for all the help! Found out what I needed!
The Beast
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i7-950 Bloomfield 3.06Ghz ASUS P6X58D PREMIUM LGA 1366 intel X58 SATA 6GB/s NVIDIA Geforce GeForce GTX 460 CORSAIR DDR3 6GB 
Hard DriveOptical DriveOSMonitor
Corsair 40GB SSD, 640GB Western Digital HDD HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit ASUS 24" HD LCD widescreen monitor 
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Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower World of Warcraft Cataclysm 
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The Beast
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CPUMotherboardGraphicsRAM
i7-950 Bloomfield 3.06Ghz ASUS P6X58D PREMIUM LGA 1366 intel X58 SATA 6GB/s NVIDIA Geforce GeForce GTX 460 CORSAIR DDR3 6GB 
Hard DriveOptical DriveOSMonitor
Corsair 40GB SSD, 640GB Western Digital HDD HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit ASUS 24" HD LCD widescreen monitor 
KeyboardPowerCaseMouse Pad
Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower World of Warcraft Cataclysm 
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