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Asus P8P67 - 4 vs 8 Pin CPU Power

post #1 of 3
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While building my new i7-2600K rig, i found that the motherboard had an 8-Pin CPU power connector. However, the instruction manual stated 4 pin would also work. Is it a good idea to do this, as the PSU only has a 4 pin connector and no 8 pin connector.

What are possible side effects? Would the cpu degrade, face voltage issues, extra heat since the power is going through 4 connections and not 8?
    
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CPUMotherboardGraphicsRAM
i7-2600K Asus P8P67 Nvidia MSI 560TI Hawk 8GB G.SKill Ripjaws 1600mhz 
Hard DriveOptical DriveOSMonitor
250gb Hdd + 500gb + 1Tb Sata LG Drive Win7 Pro 64bit LG Flatron E2260 + LG Flatron L194WT 
KeyboardPowerCaseMouse
Logitech EX100 650W Coolmaster Thermaltake Armor+ Mx Logitech G9x 
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Razer Goliathus 
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post #2 of 3
Quote:
Originally Posted by starpwnage View Post

What are possible side effects? Would the cpu degrade, face voltage issues, extra heat since the power is going through 4 connections and not 8?
Providing your psu is up to the task there's really no difference between 4/8 pin cpu connector.

I could see it maybe making a difference on a high wattage, heavily oc'd chip (140 watt cpu on dry ice/liquid nitrogen) since the load would be spread over twice as many wires, or if each 4 pin connector went to a different rail on the psu. IMO, in most case a single 4 pin should get the job done just fine. SB chips also draw much less power than previous generations.
post #3 of 3
Just use an 8-pin, better safe than sorry. There's nothing to lose. Unless you only have one 8-pin connector.

Mine has two 4-pins for the CPU power.
    
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CPUMotherboardGraphicsRAM
Intel Pentium E5400 G31TM-P31 (MS-7529) NVIDIA GeForce GTS 250 Kingston (generic 6-6-6-18 @ 400mhz) 
Hard DriveOptical DriveCoolingOS
Seagate 250GB (ST3250318AS) Liteon CD/DVD-RW x22 Cooler Master Hyper 212 Plus Ubuntu 10.10 x86 / Windows 7 Ultimate x86 Dual-... 
MonitorKeyboardPowerCase
Acer X193HQ Genius KB 110 Corsair HX450 Something Generic 
MouseMouse Pad
Genius Netscroll 120 $4 Mousepad from CD-R King 
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