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850w enough for a 7970 and two 5870's?

post #1 of 13
Thread Starter 
I'm wondering if my PSU is beefy enough to trow in a 3rd GPU for folding during BGB events. Thoughts?
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New i7 950 build
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C300 64gb , Agility2 90gb, 2x WD greens Raid 0 Samsung 830 series 64gb H100 Windows 7 64bit 
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post #2 of 13
It is, 5870 are not particularly power thirsty... it'd be fine.
post #3 of 13
I dont think you can tri fire a 7970 and two 5870s? I think all 3 of the cards have to be in the same generational series.
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~My Rigg~
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post #4 of 13
Quote:
Originally Posted by d33r View Post

I dont think you can tri fire a 7970 and two 5870s? I think all 3 of the cards have to be in the same generational series.


That's not what he's doing.
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The 3930
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post #5 of 13
I would have to say no for 100% Load.
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post #6 of 13
Quote:
Originally Posted by tsm106 View Post

That's not what he's doing.

weird i kind of thought he meant something else too, but how do you set that up? do you have to have multiple catalyst drivers installed to run each card since they are not bridged with a crossfirex gpu strapping, therefor not running in sync. How do you control all three cards then? thinking.gif
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post #7 of 13
2 5870s was fine on my old corsair 750. 2 7970s was fine on my old corsiar 750. you should be ok. thumb.gif
post #8 of 13
Quote:
Originally Posted by d33r View Post

weird i kind of thought he meant something else too, but how do you set that up? do you have to have multiple catalyst drivers installed to run each card since they are not bridged with a crossfirex gpu strapping, therefor not running in sync. How do you control all three cards then? thinking.gif

He's not crossfiring, he's gonna use them to mine or fold with. You don't have to do anything, the drivers are all unified, meaning they work on many generations of cards.
The 3930
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Junior's 3820
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SO's HTPC 2500K
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CPUMotherboardGraphicsGraphics
i7 3930K Asus Rampage IV Extreme XFX 7970 Black Edition Diamond 7970 x3 
RAMHard DriveHard DriveOptical Drive
Samsung 2400mhz 4gb x4 Samsung 830 128gb x2 Seagate 3TB 7200rpm Asus BD ext 
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The 3930
(23 items)
 
Junior's 3820
(18 items)
 
SO's HTPC 2500K
(17 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K Asus Rampage IV Extreme XFX 7970 Black Edition Diamond 7970 x3 
RAMHard DriveHard DriveOptical Drive
Samsung 2400mhz 4gb x4 Samsung 830 128gb x2 Seagate 3TB 7200rpm Asus BD ext 
CoolingCoolingCoolingCooling
Alphacool Monsta 480 + Nova 1080x2 Alphacool XP3 + EK RIVE Quad EK-FC7970 GT AP15 x22 
CoolingOSMonitorPower
MCP35x x3 Win7 Pro x64 Asus VS229H-P x3 Lepa 1600 
CaseAudioAudioAudio
Corsair 700D Yamaha NeoHD YMC-500 Dayton Audio BS36 Energy MSW M6 
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post #9 of 13
Thread Starter 
No special setup or anything I just have my main 7970 in the primary GPU slot. The other 5870 is identified by the drivers but is not used during gaming, only during folding/BOINC. I can even overclock the 5870 with afterburner if I choose but the cards run Independent from each other. Thanks for the replies, now I just have to cram this GPU in
New i7 950 build
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 @ 4.2ghz MSI Big Bang x58  Crossfire Sapphire 7970 OC  6gb HyperX 1600 
Hard DriveHard DriveCoolingOS
C300 64gb , Agility2 90gb, 2x WD greens Raid 0 Samsung 830 series 64gb H100 Windows 7 64bit 
MonitorPowerCase
Crossover 1440p OCZ ZX850W Lian li Pc-x2000f 
  hide details  
Reply
New i7 950 build
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 @ 4.2ghz MSI Big Bang x58  Crossfire Sapphire 7970 OC  6gb HyperX 1600 
Hard DriveHard DriveCoolingOS
C300 64gb , Agility2 90gb, 2x WD greens Raid 0 Samsung 830 series 64gb H100 Windows 7 64bit 
MonitorPowerCase
Crossover 1440p OCZ ZX850W Lian li Pc-x2000f 
  hide details  
Reply
post #10 of 13
Thread Starter 
Another question, If I use the Molex > 6 pin power adapters is that ok? Is there anything I need to know when using those?
New i7 950 build
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 @ 4.2ghz MSI Big Bang x58  Crossfire Sapphire 7970 OC  6gb HyperX 1600 
Hard DriveHard DriveCoolingOS
C300 64gb , Agility2 90gb, 2x WD greens Raid 0 Samsung 830 series 64gb H100 Windows 7 64bit 
MonitorPowerCase
Crossover 1440p OCZ ZX850W Lian li Pc-x2000f 
  hide details  
Reply
New i7 950 build
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 @ 4.2ghz MSI Big Bang x58  Crossfire Sapphire 7970 OC  6gb HyperX 1600 
Hard DriveHard DriveCoolingOS
C300 64gb , Agility2 90gb, 2x WD greens Raid 0 Samsung 830 series 64gb H100 Windows 7 64bit 
MonitorPowerCase
Crossover 1440p OCZ ZX850W Lian li Pc-x2000f 
  hide details  
Reply
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