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ATX 12v plug ?

post #1 of 7
Thread Starter 
i have just put my new rig together and have a problem with the Psu.

1st off the rig had no power at all.
I removed the PSU and reinstalled it to see if all connections were ok.
nothing.
so i read through the blurb again and the only thing that looked doubtful was the ATX 12v connector on the MOBO , it has 8 pins. 2 x 4 vertically. 4 x12v and 4x ground (earth). a blanking plate covered 4 of them as new.
the ATx plug on the PSU has 6 pins.
that's what we plugged in 1st time.
2nd time around i decided to try the 4-pin atx plug from the Psu. that did get us to boot up, i could see the "self-test" screen come up on the monitor, but noticed the Cpu fan was'nt on, so aborted bootup.
tried again and noticed that the cpu fan started at bootup, but stopped after less than a second. the case fan and Gpu fans were spinning.
I removed the GPu, unplugged the CD-rom and the case fan to see if they were taking the juice needed for the Cpu fan, but still the Cpu fan didn't go.

I suspect that i need a Psu with an 8 pin ATX-12v plug.

anybody out there know about this ?
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post #2 of 7
It might have something in the BIOS to let you turn up and/or down on the CPU fan.
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#well
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post #3 of 7
Thread Starter 
we can't get to bios, cos i have to abort due to the cpu fan not running.
are you suggesting i run the system without the fan ?
surely that will fry the Cpu .?
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samsung sp1634n CPU - Prolimatech Megahalems  windows 7 Professional 64 bit Hanns G flatty 
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post #4 of 7
ive read that the new intell chips only make the cpu fan come on when it needs it. i could be wrong tho .
    
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post #5 of 7
Uh... You shouldn't worry, it can run 3-4 minutes without the fan running.
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MonitorMonitorKeyboardPower
Dell U2711 Samsung SyncMaster 2233 Ducky DK9008 Overclock.net Edition, Cherry MX B... Corsair TX850 
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#well
(18 items)
 
Lenovo L530
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CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H Sapphire RX 580 Corsair CMX8GX3M2A2000C9 
Hard DriveOptical DriveCoolingOS
Samsung 840 EVO Generic DVD±RW Burner Noctua NH-D14 Windows 10 
MonitorMonitorKeyboardPower
Dell U2711 Samsung SyncMaster 2233 Ducky DK9008 Overclock.net Edition, Cherry MX B... Corsair TX850 
CaseMouseMouse PadAudio
Fractal Design Core 2500 Logitech G303 QPAD HeatoN L M-Audio Fast Track USB 
AudioAudio
Beyerdynamic DT-770 80 Ohm AntLion ModMic v3 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
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post #6 of 7
Thread Starter 
hmmmm, i'm a bit wary of that.
also i have just been looking through the specs of other PSU's and they have an 8-pin connector, mine doesn't. even thogh it is Sli tready, i don't think its 2-core ready.
My System
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CPUMotherboardGraphicsRAM
Intel i7 3770K 3.5Ghz Gigabyte Z77X-UD3H BFG GTX 260 Max Force 55 (oc)   Kingston HyperX 8GB 2133 Mhz  
Hard DriveCoolingOSMonitor
samsung sp1634n CPU - Prolimatech Megahalems  windows 7 Professional 64 bit Hanns G flatty 
KeyboardPowerCaseMouse
logitec G15 corsair HX 520 modular Antec P182 crappy one 
Mouse Pad
desk 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3770K 3.5Ghz Gigabyte Z77X-UD3H BFG GTX 260 Max Force 55 (oc)   Kingston HyperX 8GB 2133 Mhz  
Hard DriveCoolingOSMonitor
samsung sp1634n CPU - Prolimatech Megahalems  windows 7 Professional 64 bit Hanns G flatty 
KeyboardPowerCaseMouse
logitec G15 corsair HX 520 modular Antec P182 crappy one 
Mouse Pad
desk 
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post #7 of 7
Thread Starter 
looks like we will have to try and swap it for a different model with a "8-pin dual core" connector on it.

its just a shame that when we were asking around on here that the subject of the different connectors for dual core cpu's never came up.

so we have learned a lesson there.

anyone else looking for a Psu for use with Dual Core Cpu, make sure in the specifications list there is "8-pin dual core" connector.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3770K 3.5Ghz Gigabyte Z77X-UD3H BFG GTX 260 Max Force 55 (oc)   Kingston HyperX 8GB 2133 Mhz  
Hard DriveCoolingOSMonitor
samsung sp1634n CPU - Prolimatech Megahalems  windows 7 Professional 64 bit Hanns G flatty 
KeyboardPowerCaseMouse
logitec G15 corsair HX 520 modular Antec P182 crappy one 
Mouse Pad
desk 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 3770K 3.5Ghz Gigabyte Z77X-UD3H BFG GTX 260 Max Force 55 (oc)   Kingston HyperX 8GB 2133 Mhz  
Hard DriveCoolingOSMonitor
samsung sp1634n CPU - Prolimatech Megahalems  windows 7 Professional 64 bit Hanns G flatty 
KeyboardPowerCaseMouse
logitec G15 corsair HX 520 modular Antec P182 crappy one 
Mouse Pad
desk 
  hide details  
Reply
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