Overclock.net › Forums › Graphics Cards › AMD/ATI › Power Usage on 2 6950s
New Posts  All Forums:Forum Nav:

Power Usage on 2 6950s

post #1 of 12
Thread Starter 
Ok so the guy at my local computer store told me that if I wanted to crossfire 2 6950HD 2 GB I would need 850w power supply minimum. That seemed really high to me. I will probably OC a little, but nothing insane. I was going to get an 850watt anyways to be safe but now that he said that would be minimum it's got me worried.
Does this seem high to anyone else? Anyone who has 2 6950s, what power supply are you running??
post #2 of 12
Whoa! He does not know what he is talking about at all. I'm sorry that you had to deal with him.

To power a system that has two 6950s in it, all you'd need is a quality 600-650W power supply.
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 12
most guys at the computer store = don't know what they are talking about.

Like Two Cables said... you are good to go with a quality 650w
    
CPUMotherboardGraphicsRAM
i5 2500k OC'd 4.9GHz Asus P8P67-M PRo Asus GTX-560 Ti Direct CU II  PNY XLR8 8GB DDR3 PC3-12800 
Hard DriveOptical DriveCoolingOS
WD Caviar Black WD1002FAEX 1TB 7200 RPM LG Black Blu-ray Disc Combo SATA w/Lightscribe Corsair H60 Windows 7 Ultimate 
MonitorPowerCase
Acer G235HAbd 23'' WideScreen LCD monitor OCZ ModXStream Pro OCZ700MXSP 700W Modular PSU Corsair Carbide Series 500R 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500k OC'd 4.9GHz Asus P8P67-M PRo Asus GTX-560 Ti Direct CU II  PNY XLR8 8GB DDR3 PC3-12800 
Hard DriveOptical DriveCoolingOS
WD Caviar Black WD1002FAEX 1TB 7200 RPM LG Black Blu-ray Disc Combo SATA w/Lightscribe Corsair H60 Windows 7 Ultimate 
MonitorPowerCase
Acer G235HAbd 23'' WideScreen LCD monitor OCZ ModXStream Pro OCZ700MXSP 700W Modular PSU Corsair Carbide Series 500R 
  hide details  
Reply
post #4 of 12
Thread Starter 
thanks! I thought this sounded really sketchy.
post #5 of 12
Quote:
Originally Posted by unfbilly11 View Post
thanks! I thought this sounded really sketchy.
You're welcome!

I'd love to hear what he thinks a system would need that only has one 6950 in it. lol Man, a decent 850W power supply could handle a system with 3 6950s in it, almost 4!
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #6 of 12
He wants your moneys

Think you looking at around 200 watts a card @ full load.
Gene-Z Dedi
(7 items)
 
Captain America
(6 items)
 
 
CPUMotherboardRAMHard Drive
i7 2600k @ 5.2 Ghz Asus Maximus IV Gene-Z Gskill 2133 4GB Caviar Black 
CoolingOSPower
Corsair H100 Arch x64 OCZ 650 Watt 
CPUCPUMotherboardGraphics
Intel Xeon E5-2650 Intel Xeon E5-2650 ASUS Z9PE-D8 WS XFX 6870 
RAMOS
32 GB Samsung Arch Nix 
  hide details  
Reply
Gene-Z Dedi
(7 items)
 
Captain America
(6 items)
 
 
CPUMotherboardRAMHard Drive
i7 2600k @ 5.2 Ghz Asus Maximus IV Gene-Z Gskill 2133 4GB Caviar Black 
CoolingOSPower
Corsair H100 Arch x64 OCZ 650 Watt 
CPUCPUMotherboardGraphics
Intel Xeon E5-2650 Intel Xeon E5-2650 ASUS Z9PE-D8 WS XFX 6870 
RAMOS
32 GB Samsung Arch Nix 
  hide details  
Reply
post #7 of 12
Dude either didn't know what he was talking about OR (and this is what I think) he was just trying to get a fatter commision by scaring the hell out of you.
Stugots III
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K @ 4.5GHz ASUS Maximus V Gene EVGA GTX 1060 SC 2x8GB G.Skill 2133MHz 
Hard DriveOptical DriveCoolingOS
250GB 850-EVO | 1TB EZEX | 2TB F4 It BURNS! H100i | NB Pros Windows 10 Pro x64 
MonitorKeyboardPowerCase
ASUS VE258Q Filco Majestouch I Seasonic X-560w Fractal Arc Mini R2 
MouseMouse PadAudioAudio
Logitech G502 Corsair MM300 HT Omega eClaro SHURE SRH-840 | Audioengine A2+S8 
  hide details  
Reply
Stugots III
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K @ 4.5GHz ASUS Maximus V Gene EVGA GTX 1060 SC 2x8GB G.Skill 2133MHz 
Hard DriveOptical DriveCoolingOS
250GB 850-EVO | 1TB EZEX | 2TB F4 It BURNS! H100i | NB Pros Windows 10 Pro x64 
MonitorKeyboardPowerCase
ASUS VE258Q Filco Majestouch I Seasonic X-560w Fractal Arc Mini R2 
MouseMouse PadAudioAudio
Logitech G502 Corsair MM300 HT Omega eClaro SHURE SRH-840 | Audioengine A2+S8 
  hide details  
Reply
post #8 of 12
Quote:
Originally Posted by TwoCables View Post
You're welcome!

I'd love to hear what he thinks a system would need that only has one 6950 in it. lol Man, a decent 850W power supply could handle a system with 3 6950s in it, almost 4!
hey Two Cables.
a quality 750watt be ok with two 6970s?
just checking before i X-Fire
    
CPUMotherboardGraphicsRAM
i5 2500k OC'd 4.9GHz Asus P8P67-M PRo Asus GTX-560 Ti Direct CU II  PNY XLR8 8GB DDR3 PC3-12800 
Hard DriveOptical DriveCoolingOS
WD Caviar Black WD1002FAEX 1TB 7200 RPM LG Black Blu-ray Disc Combo SATA w/Lightscribe Corsair H60 Windows 7 Ultimate 
MonitorPowerCase
Acer G235HAbd 23'' WideScreen LCD monitor OCZ ModXStream Pro OCZ700MXSP 700W Modular PSU Corsair Carbide Series 500R 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500k OC'd 4.9GHz Asus P8P67-M PRo Asus GTX-560 Ti Direct CU II  PNY XLR8 8GB DDR3 PC3-12800 
Hard DriveOptical DriveCoolingOS
WD Caviar Black WD1002FAEX 1TB 7200 RPM LG Black Blu-ray Disc Combo SATA w/Lightscribe Corsair H60 Windows 7 Ultimate 
MonitorPowerCase
Acer G235HAbd 23'' WideScreen LCD monitor OCZ ModXStream Pro OCZ700MXSP 700W Modular PSU Corsair Carbide Series 500R 
  hide details  
Reply
post #9 of 12
Quote:
Originally Posted by Sohryu76 View Post
hey Two Cables.
a quality 750watt be ok with two 6970s?
just checking before i X-Fire
Absolutely. AMD recommends a 500W peak-rated power supply to power a system with one 6950 in it, and a 550W peak-rated PSU for a system with one 6970 in it. So, this means that a quality 650-750W unit is a great fit for a system that has two 6970s in it.
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #10 of 12
Thread Starter 
Yeah, I suspected this guy of trying to just get more money out of me. I have never crossfire so I didn't know how much more I would need, but I suspected it wasn't 3 times what I needed to run 1 of them!! Thanks again
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Power Usage on 2 6950s