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Some psu questions

post #1 of 4
Thread Starter 

So I am going to be coming into a temporary possession of a 7970 for a bit. Would my Seasonic M12 II 650 be up to the task of running that and a 7950 (stock) in crossfire? And my 2nd question being once I buy my 290 will my power supply be enough for that card? I am quite the noob on this topic so if anyone could help it would appreciated :D

Lucy
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Lucy
(20 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3770K ASUS Maximus V Gene Z77 Sapphire 7950 Dual-X 3L G.Skill 4x4GB  
Hard DriveHard DriveHard DriveCooling
WD Caviar Black 500GB Corsair Force 3 120GB SSD Hitachi 250GB Corsair H100  
CoolingOSOSMonitor
Corsair SP120's PWM Versions Xubuntu 13.10 Windows 7 Ultimate 64-bit 27" Hanns-G HL272 
MonitorKeyboardPowerCase
Samsung BX2235 IBM Model M SeaSonic M12II 650w Corsair Obsidian 350D / Corsair Vengeance C70 A... 
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Corsair Vengeance M95 White My Desk ATH-M50 White NZXT HUE (On RMA) 
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post #2 of 4
You need 407 watts for Tahiti GPU's in crossfire, which translates into roughly 33 available amps on your 12v rails.

Guru3D's measurements are fairly accurate.

http://www.guru3d.com/articles_pages/asus_radeon_hd_7970_crossfire_review,7.html
Edited by GridIroN - 11/24/13 at 9:57am
post #3 of 4
Thread Starter 

My psu has 53A on the 12v rail if I remember correctly. My i7 is at stock for the time being. So I should be fine?  

Lucy
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Intel Core i7 3770K ASUS Maximus V Gene Z77 Sapphire 7950 Dual-X 3L G.Skill 4x4GB  
Hard DriveHard DriveHard DriveCooling
WD Caviar Black 500GB Corsair Force 3 120GB SSD Hitachi 250GB Corsair H100  
CoolingOSOSMonitor
Corsair SP120's PWM Versions Xubuntu 13.10 Windows 7 Ultimate 64-bit 27" Hanns-G HL272 
MonitorKeyboardPowerCase
Samsung BX2235 IBM Model M SeaSonic M12II 650w Corsair Obsidian 350D / Corsair Vengeance C70 A... 
MouseMouse PadAudioOther
Corsair Vengeance M95 White My Desk ATH-M50 White NZXT HUE (On RMA) 
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Lucy
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Intel Core i7 3770K ASUS Maximus V Gene Z77 Sapphire 7950 Dual-X 3L G.Skill 4x4GB  
Hard DriveHard DriveHard DriveCooling
WD Caviar Black 500GB Corsair Force 3 120GB SSD Hitachi 250GB Corsair H100  
CoolingOSOSMonitor
Corsair SP120's PWM Versions Xubuntu 13.10 Windows 7 Ultimate 64-bit 27" Hanns-G HL272 
MonitorKeyboardPowerCase
Samsung BX2235 IBM Model M SeaSonic M12II 650w Corsair Obsidian 350D / Corsair Vengeance C70 A... 
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Corsair Vengeance M95 White My Desk ATH-M50 White NZXT HUE (On RMA) 
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post #4 of 4
Quote:
Originally Posted by HemiRoR View Post

My psu has 53A on the 12v rail if I remember correctly. My i7 is at stock for the time being. So I should be fine?  

I would imagine you'd be ok, as long as the CPU stays stock or lightly overclocked.
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