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Gigabyte 7950 crossfire.. thinking about it

post #1 of 6
Thread Starter 
Thinking about doing my first crossfire setup for my gigabyte 7950.

My question is, is my psu sufficient for the task? i have a
Thermaltake toughpower 750w psu.
http://www.xoxide.com/thermaltake-toughpower-750w-modular-sli.html?gclid=CJm19eKk37UCFSRxQgodDycA2A

Seeing as the cards run much lower on power, would this be enough? I am running a titanium HD soundcard, H50 liquid cooler, and about 8 120mm fans total.
post #2 of 6
You'll have enough power, definately; however, I noticed that PSU only has 2 6-pin PCI-e power cables, while a Crossfire setup would need 4, so you'd have to use adapters to change Molex to 6-pin PCI-e. I'm not sure I would recommend doing that, as I've heard of said adapters causing problems in the past.
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Intel i7 4980HQ @ 2.8/4.0GHz Intel Iris Pro 5200 AMD Radeon R9 M370X 2x8GB DDR3 @ 1600MHz 
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SPEAR
(22 items)
 
Laptop #3
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2ghz ASRock Z68 Extreme3 Gen3 Gigabyte WF3 Radeon R9 270X x2 G.Skill Ripjaws X 4x4gb @ 1600 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 3 120gb (Linux) OCZ Agility 3 120gb (Windows) WD Caviar Black 2tb Hitachi 500gb 
Optical DriveOptical DriveCoolingOS
Sony Optiarc LightScribe LaCie external BluRay writer Antec Kühler H2O 920 + Corsair SP120 P/P Arch Linux + radeonsi + E20 
OSMonitorKeyboardPower
Windows 10 Pro (Insider release) ASUS VS238H-V @ 70hz Corsair K90 Corsair TX750 V2 
CaseMouseAudioAudio
None CM Storm Recon Altec Lansing ATP3 Creative Aurvana Live! 
OtherOther
Masscool Shin-Etsu G751 ASUS PCE-N10 
CPUGraphicsGraphicsRAM
Intel i7 4980HQ @ 2.8/4.0GHz Intel Iris Pro 5200 AMD Radeon R9 M370X 2x8GB DDR3 @ 1600MHz 
Hard DriveOSMonitor
1TB PCIe SSD OS X 10.11.2 El Capitan 15" @ 2880x1800 
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by Gungnir View Post

You'll have enough power, definately; however, I noticed that PSU only has 2 6-pin PCI-e power cables, while a Crossfire setup would need 4, so you'd have to use adapters to change Molex to 6-pin PCI-e. I'm not sure I would recommend doing that, as I've heard of said adapters causing problems in the past.

why would i need 4? as far as i can see. im only using one of the 6pin pci connectors atm for my 7950. Wouldnt the other one just be used for the new card
post #4 of 6
Quote:
Originally Posted by RedFox911 View Post

why would i need 4? as far as i can see. im only using one of the 6pin pci connectors atm for my 7950. Wouldnt the other one just be used for the new card

You are? And it's working correctly? My 7950 requires two 6-pins, and every 7950 I can find on Newegg needs either two 6-pins or a 6-pin and an 8-pin. I don't think that just the PCI-E slot and a single 6-pin would provide enough power, unless it was drawing more power through that one cord than it's rated for.
SPEAR
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Laptop #3
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CPUMotherboardGraphicsRAM
i5 2500k @ 4.2ghz ASRock Z68 Extreme3 Gen3 Gigabyte WF3 Radeon R9 270X x2 G.Skill Ripjaws X 4x4gb @ 1600 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 3 120gb (Linux) OCZ Agility 3 120gb (Windows) WD Caviar Black 2tb Hitachi 500gb 
Optical DriveOptical DriveCoolingOS
Sony Optiarc LightScribe LaCie external BluRay writer Antec Kühler H2O 920 + Corsair SP120 P/P Arch Linux + radeonsi + E20 
OSMonitorKeyboardPower
Windows 10 Pro (Insider release) ASUS VS238H-V @ 70hz Corsair K90 Corsair TX750 V2 
CaseMouseAudioAudio
None CM Storm Recon Altec Lansing ATP3 Creative Aurvana Live! 
OtherOther
Masscool Shin-Etsu G751 ASUS PCE-N10 
CPUGraphicsGraphicsRAM
Intel i7 4980HQ @ 2.8/4.0GHz Intel Iris Pro 5200 AMD Radeon R9 M370X 2x8GB DDR3 @ 1600MHz 
Hard DriveOSMonitor
1TB PCIe SSD OS X 10.11.2 El Capitan 15" @ 2880x1800 
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SPEAR
(22 items)
 
Laptop #3
(7 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2ghz ASRock Z68 Extreme3 Gen3 Gigabyte WF3 Radeon R9 270X x2 G.Skill Ripjaws X 4x4gb @ 1600 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 3 120gb (Linux) OCZ Agility 3 120gb (Windows) WD Caviar Black 2tb Hitachi 500gb 
Optical DriveOptical DriveCoolingOS
Sony Optiarc LightScribe LaCie external BluRay writer Antec Kühler H2O 920 + Corsair SP120 P/P Arch Linux + radeonsi + E20 
OSMonitorKeyboardPower
Windows 10 Pro (Insider release) ASUS VS238H-V @ 70hz Corsair K90 Corsair TX750 V2 
CaseMouseAudioAudio
None CM Storm Recon Altec Lansing ATP3 Creative Aurvana Live! 
OtherOther
Masscool Shin-Etsu G751 ASUS PCE-N10 
CPUGraphicsGraphicsRAM
Intel i7 4980HQ @ 2.8/4.0GHz Intel Iris Pro 5200 AMD Radeon R9 M370X 2x8GB DDR3 @ 1600MHz 
Hard DriveOSMonitor
1TB PCIe SSD OS X 10.11.2 El Capitan 15" @ 2880x1800 
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post #5 of 6
Thread Starter 
Quote:
Originally Posted by Gungnir View Post

You are? And it's working correctly? My 7950 requires two 6-pins, and every 7950 I can find on Newegg needs either two 6-pins or a 6-pin and an 8-pin. I don't think that just the PCI-E slot and a single 6-pin would provide enough power, unless it was drawing more power through that one cord than it's rated for.

Im looking at my gigabyte 7950 in my pc atm, and there is one 6pin (red) cable connected and next two it a 4 pin connected from the looks of it.
post #6 of 6
Thread Starter 
Correction! i just check again and i have 1 8 pin connected and the other is a 6 pin.
So if i got another card, i would need 1 8pin and another 6pin. Which i have. Maybe your card is just different.
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