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Should I get a new PSU?

post #1 of 6
Thread Starter 
Thinking about taking the plunge and grabbing x2 GTX 560 ti for sli set up,

I know that a single requires about 500w PSU, Do you think my current psu will handle the upgrade, or should I get something like an 850 or higher?

I realize I will have to down the road, but as I am on a limited budget with christmas around the corner... well, my back is against the wall...

Any help would be greatly appreciated



edit: sig will be staying the same with a 64g ssd added sometime next week
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post #2 of 6
Nope. Your more then good for with the 750.
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^3
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post #3 of 6
Quote:
Originally Posted by HardheadedMurphy View Post
Thinking about taking the plunge and grabbing x2 GTX 560 ti for sli set up,

I know that a single requires about 500w PSU, Do you think my current psu will handle the upgrade, or should I get something like an 850 or higher?

I realize I will have to down the road, but as I am on a limited budget with christmas around the corner... well, my back is against the wall...

Any help would be greatly appreciated

It's actually way more than enough. Even a quality 550W power supply would be enough.

The TX750 is capable of continuously delivering 750W, but NVIDIA's 500W recommendation for one 560 Ti is talking about a PSU with a peak capacity of 500W. Most 500W peak-rated units are only capable of continuously delivering maybe 375W-425W.

Furthermore, Guru3D.com was able to get their test system to pull 449W from the wall outlet with two 560 Ti's in SLI under full load (source). If I assume that their PSU was 85% efficient, then that would mean that their system pulled about 381W from the PSU.

However, Guru3D.com also recommends adding about 100-150W to this in order to account for the rest of the system. So that brings the total to about 481 to 531W which is why a quality 550W power supply would be enough.
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It's a computer!
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post #4 of 6
Thread Starter 
Great Info, thank you lots!
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post #5 of 6
Quote:
Originally Posted by HardheadedMurphy View Post
Great Info, thank you lots!
You're very welcome!
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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It's a computer!
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Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #6 of 6
You are definitely fine.
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