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750HX Enough For A 580 & 480?

post #1 of 8
Thread Starter 
I've recently purchased a GTX 580 which should come in some time next week. I'm just curious to know if my psu will be able to handle a 580 and 480(physx) running together? I realize it's over kill but I just wanna try it before it gets sold. What I don't want to do is fry something or possibly my whole rig in the process.
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post #2 of 8
the 480 uses around 160w and 580 is like 150w. might be off a bit. But 750w should be fine but real close. under load ull be hitting close to 750.

http://www.bit-tech.net/hardware/gra...x-580-review/8
Edited by CtrlAltElite - 5/22/11 at 3:28pm
post #3 of 8
I think it'll have no problem at all.

Guru3D was able to pull 719W from the wall outlet with two GTX 580s in SLI in their test system (source). So if I assume 85% efficiency, then that means their system pulled about 611W from the power supply. They also recommend adding about 150W to the total for the rest of the system which means I arrive at about 760W for total power being pulled from the PSU under the heaviest loads.

Now, considering that the GTX 480 will only be processing PhysX, we're talking a much smaller added power consumption to the GTX 580.

So, the HX750 has way more than enough power.
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post #4 of 8
Quote:
Originally Posted by TwoCables View Post
I think it'll have no problem at all.

Guru3D was able to pull 719W from the wall outlet with two GTX 580s in SLI in their test system (source). So if I assume 85% efficiency, then that means their system pulled about 611W from the power supply. They also recommend adding about 150W to the total for the rest of the system which means I arrive at about 760W for total power being pulled from the PSU under the heaviest loads.

Now, considering that the GTX 480 will only be processing PhysX, we're talking a much smaller added power consumption to the GTX 580.

So, the HX750 has way more than enough power.
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post #5 of 8
Im able to power/game my sig rig on a nonmodular 650W Corsair. You'll be fine.
 
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post #6 of 8
You will be fine. That 480 will be under minimal load since it will only be used for PhysX
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post #7 of 8
Thread Starter 
Much appreciated guys. Thanks TwoCables, I've found out through the years that your advice is usually sound advice.
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Red October
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post #8 of 8
Quote:
Originally Posted by Tatakai All View Post
Much appreciated guys. Thanks TwoCables, I've found out through the years that your advice is usually sound advice.
Aw, thank you (and you are very welcome)!

I owe everything I know (or everything that I can recite) to all of the true experts here on OCN. They are amazing.
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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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