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Unsure of what size power supply to use

post #1 of 8
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
The Beast
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ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
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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 DriveHard DriveOptical DriveOS
Corsair 40GB SSD, 640GB Western Digital HDD Samsung PRO SSD  HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit 
MonitorKeyboardPowerCase
ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
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World of Warcraft Cataclysm 
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post #2 of 8
850 Should be plenty. Are you doing any watercooling or anything?
post #3 of 8
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
(14 items)
 
  
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 DriveHard DriveOptical DriveOS
Corsair 40GB SSD, 640GB Western Digital HDD Samsung PRO SSD  HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit 
MonitorKeyboardPowerCase
ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
Mouse Pad
World of Warcraft Cataclysm 
  hide details  
Reply
The Beast
(14 items)
 
  
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 DriveHard DriveOptical DriveOS
Corsair 40GB SSD, 640GB Western Digital HDD Samsung PRO SSD  HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit 
MonitorKeyboardPowerCase
ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
Mouse Pad
World of Warcraft Cataclysm 
  hide details  
Reply
post #4 of 8
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/
post #5 of 8
if your talking about that corsair 850w in your sig, yeah just recycle that into your new build.. BTW which model is it?
Going to be chaep
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Going to be chaep
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Wife's Rig
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i7-3770k Gigabyte GA-Z77X-UP5 TH MSI GTX460 G.Skill TridentX 2400 2 x 4GB 
Hard DriveHard DriveOptical DriveCooling
Plextor M5p 128GB 2 x WD 500GB Blues LG Prolimatech Megahalems Rev C 
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Arctic F12 CO PWM x 2 Push/Pull Windows 7 64 bit Ultimate LG IPS235V Corsair AX850 
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Coolermaster HAF 912 advanced (Asia version) 
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1.67Ghz Atom stock 1GB DDR2 2 x 500GB Western Digital Cavier Blacks [RAID 1] 
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stock DSM3.2 [built on linux] stock stock 
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Synology DX510 Expansion unit 5 x 1TB WD Cavier Blacks in a RAID 6 
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post #6 of 8
You'd probably be fine with a 500 or 550W PSU. 850 is mega overkill.
 
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Reginald
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post #7 of 8
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.
Simplicity
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Simplicity
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#2 PC
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Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
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Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
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Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
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Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
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post #8 of 8
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
(14 items)
 
  
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 DriveHard DriveOptical DriveOS
Corsair 40GB SSD, 640GB Western Digital HDD Samsung PRO SSD  HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit 
MonitorKeyboardPowerCase
ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
Mouse Pad
World of Warcraft Cataclysm 
  hide details  
Reply
The Beast
(14 items)
 
  
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 DriveHard DriveOptical DriveOS
Corsair 40GB SSD, 640GB Western Digital HDD Samsung PRO SSD  HP Blue ray player, DVD/CD writer/Reader Windows 7 home premium 64bit 
MonitorKeyboardPowerCase
ASUS 24" HD LCD widescreen monitor Logitech G510 Corsair 850W Modular COOLER MASTER HAF X RC-942-KKN1 Black ATXFulltower 
Mouse Pad
World of Warcraft Cataclysm 
  hide details  
Reply
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