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Question question about dedicated PhysX card and my PSU?

post #1 of 3
Thread Starter 
I've just built a new system consisting of the following parts.
CPU: i7 4770K clocked at 4.4GHz
Cooler: Corsair H110
Graphics Card: EVGA GTX 770 SC with ACX Cooler clocked 1317MHz/3648MHz (Core/Mem)
Motherboard: ASUS Z87-Plus
RAM: 8GB Corsair Vengeance 1600MHz DDR3
Hard Drive: 1.5TB Western Digital Green (SATA II)
Power Supply: Corsair Gaming Series GS700 700W

I just noticed that I have an old 550Ti sitting around in my workroom. Could I use the 550Ti as a dedicated PhysX card with my 700W PSU, or will I be pushing my PSU too hard with an additional PhysX GPU?
GameRig3
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Z87-Plus EVGA GTX 770 8GB Corsair Vengeance 
Hard DriveOptical DriveCoolingOS
Western Digital Green None Corsair H110 (with four 140mm fans for push/pull) Windows 8 Pro 64-bit 
MonitorKeyboardPowerCase
Vizio 32 inch TV Apple Pro Keyboard Corsair Gaming Series 700W NZXT 630 Phantom 
MouseMouse Pad
Razer DeathAdder 2013 Generic 
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GameRig3
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Z87-Plus EVGA GTX 770 8GB Corsair Vengeance 
Hard DriveOptical DriveCoolingOS
Western Digital Green None Corsair H110 (with four 140mm fans for push/pull) Windows 8 Pro 64-bit 
MonitorKeyboardPowerCase
Vizio 32 inch TV Apple Pro Keyboard Corsair Gaming Series 700W NZXT 630 Phantom 
MouseMouse Pad
Razer DeathAdder 2013 Generic 
  hide details  
Reply
post #2 of 3

There's way more than enough power. The extra power draw won't be enough to worry about because the card will just be doing PhysX.

 

However, I don't know if this will be worth it. You can do a Before & After test to see, but I have a feeling that the PhysX processing power of the GTX 770 will be greater than what you'd get by dedicating it to the GTX 550 Ti. So, it might result in inferior performance. Still, I think it's worth testing just in case you get superior performance. If you don't notice any difference, then you'd need to do benchmarks.

It's a computer!
(19 items)
 
  
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 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
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 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 3
Thread Starter 
Looks like a before and after test is the way to go. Thanks for your input!
GameRig3
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Z87-Plus EVGA GTX 770 8GB Corsair Vengeance 
Hard DriveOptical DriveCoolingOS
Western Digital Green None Corsair H110 (with four 140mm fans for push/pull) Windows 8 Pro 64-bit 
MonitorKeyboardPowerCase
Vizio 32 inch TV Apple Pro Keyboard Corsair Gaming Series 700W NZXT 630 Phantom 
MouseMouse Pad
Razer DeathAdder 2013 Generic 
  hide details  
Reply
GameRig3
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4770K ASUS Z87-Plus EVGA GTX 770 8GB Corsair Vengeance 
Hard DriveOptical DriveCoolingOS
Western Digital Green None Corsair H110 (with four 140mm fans for push/pull) Windows 8 Pro 64-bit 
MonitorKeyboardPowerCase
Vizio 32 inch TV Apple Pro Keyboard Corsair Gaming Series 700W NZXT 630 Phantom 
MouseMouse Pad
Razer DeathAdder 2013 Generic 
  hide details  
Reply
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