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Weak rail?

post #1 of 3
Thread Starter 
Hey there...I have been messing around all day with this PC Power and cooling 550 watt sli...well, i am running my mobo, chip, one ide and two HD;s, two 7900 GTX,s two 120mm fans, and one monster vigor monsoon cooler...here is my question....if I plug in an extra 120 mm fan, I notice in bios that my cpu cooler fan speed goes all over the place, from like 5000 down to like 600...as soon as I unplug the extra fan, it levels out...does this mean that this power supply is at its max? I had the same model of supply (different one) running an fx-60 w/ stock cooling and seven 120 mm fans...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
x6800 @ 3.8 ASUS P5B deluxe 8800 GTX 2 GB Corsair XMS2 PC 6400 
Hard DriveOptical DriveOSMonitor
raptor 150 x4 raid 0 Plextor slot load Windows XP Pro NEC MultiSync 23 Inch wide 
KeyboardPowerCaseMouse
Logitech G15 PC Power and Cooling 1000 Thermaltake Tai Chi Logitech mx1000 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
x6800 @ 3.8 ASUS P5B deluxe 8800 GTX 2 GB Corsair XMS2 PC 6400 
Hard DriveOptical DriveOSMonitor
raptor 150 x4 raid 0 Plextor slot load Windows XP Pro NEC MultiSync 23 Inch wide 
KeyboardPowerCaseMouse
Logitech G15 PC Power and Cooling 1000 Thermaltake Tai Chi Logitech mx1000 
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post #2 of 3
I would say you are getting close to the max with you PSU. Are you sure it's 550, or is the 510 watt model?

If you have this PSU, I'd say you are putting too much on it. A X6800 and twin 7900GTXs are a lot for a single 34A rail.
The Fox Box
(16 items)
 
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(10 items)
 
 
CPUMotherboardGraphicsRAM
Intel 3930K ASUS P9X79 ASUS GTX 570 DCII 4 x 4GB G.Skill Sniper 1600MHz LV 
Hard DriveOptical DriveCoolingOS
Intel 330 - 180GB LG HDDVD & Blu Ray Reader Cooler Master Hyper 612 Windows 7 Ultimate 64bit 
MonitorMonitorKeyboardPower
HP ZR30w Samsung 2243BWX Ducky! PCP&C 750w Silencer (coppa) 
CaseMouseMouse PadAudio
Lian Li PC-E8 G9x S&S Steel Onkyo Receiver/Design Acoustics 2.1 system 
CPUGraphicsRAMHard Drive
Core i5 2410M HD 3000 8GB 120GB SSD 
Optical DriveOSOSOS
Super Drive OSX 10.7.2 Win 7 Enterprise (In VB) Ubuntu 10.04 (In VB) 
MonitorPower
13" 1280x800 65w Magsafe 
CPUMotherboardRAMHard Drive
Q9300 Gigabyte P35 8GB DDR2 2TB WD 
Hard DriveHard DriveHard DriveHard Drive
2TB WD 2TB Seagate 1.5TB Seagate 1.5TB Seagate 
Hard DriveHard DriveHard DriveOptical Drive
1TB Hitachi 1TB Hitachi 500GB WD DVD-RW 
OSMonitorKeyboardPower
Win Server 2012 Headless/15" touchscreen Apple mini USB PC P&C 500W 
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The Fox Box
(16 items)
 
Macbook Pro
(10 items)
 
 
CPUMotherboardGraphicsRAM
Intel 3930K ASUS P9X79 ASUS GTX 570 DCII 4 x 4GB G.Skill Sniper 1600MHz LV 
Hard DriveOptical DriveCoolingOS
Intel 330 - 180GB LG HDDVD & Blu Ray Reader Cooler Master Hyper 612 Windows 7 Ultimate 64bit 
MonitorMonitorKeyboardPower
HP ZR30w Samsung 2243BWX Ducky! PCP&C 750w Silencer (coppa) 
CaseMouseMouse PadAudio
Lian Li PC-E8 G9x S&S Steel Onkyo Receiver/Design Acoustics 2.1 system 
CPUGraphicsRAMHard Drive
Core i5 2410M HD 3000 8GB 120GB SSD 
Optical DriveOSOSOS
Super Drive OSX 10.7.2 Win 7 Enterprise (In VB) Ubuntu 10.04 (In VB) 
MonitorPower
13" 1280x800 65w Magsafe 
CPUMotherboardRAMHard Drive
Q9300 Gigabyte P35 8GB DDR2 2TB WD 
Hard DriveHard DriveHard DriveHard Drive
2TB WD 2TB Seagate 1.5TB Seagate 1.5TB Seagate 
Hard DriveHard DriveHard DriveOptical Drive
1TB Hitachi 1TB Hitachi 500GB WD DVD-RW 
OSMonitorKeyboardPower
Win Server 2012 Headless/15" touchscreen Apple mini USB PC P&C 500W 
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Reply
post #3 of 3
Thread Starter 
it was the power supply...I replaced it with its exact brother...no more drama....it is the 510...getting ready to put back in the 1000.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
x6800 @ 3.8 ASUS P5B deluxe 8800 GTX 2 GB Corsair XMS2 PC 6400 
Hard DriveOptical DriveOSMonitor
raptor 150 x4 raid 0 Plextor slot load Windows XP Pro NEC MultiSync 23 Inch wide 
KeyboardPowerCaseMouse
Logitech G15 PC Power and Cooling 1000 Thermaltake Tai Chi Logitech mx1000 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
x6800 @ 3.8 ASUS P5B deluxe 8800 GTX 2 GB Corsair XMS2 PC 6400 
Hard DriveOptical DriveOSMonitor
raptor 150 x4 raid 0 Plextor slot load Windows XP Pro NEC MultiSync 23 Inch wide 
KeyboardPowerCaseMouse
Logitech G15 PC Power and Cooling 1000 Thermaltake Tai Chi Logitech mx1000 
  hide details  
Reply
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