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I need an additional 8pin connector!

post #1 of 14
Thread Starter 
Hello,

I need some help here. I have a CoolMax CU-700B (LINK) and it comes with one 8pin connector and 2 6-pin pci-e connectors. I need one of the 8pin connectors for my motherboard, and I need another one for my GTX 580 3GB.

Can anyone recommend the best method for acquiring another 8pin connector that is fully functional from this PSU?
HELP!
post #2 of 14
8- pin CPU and 8-Pin pci-e power cords are shaped differently if i'm not mistaken, so they are not interchangeable.

However, you can get molex to 8-pin pci-e adapters. (they use 2 molex cables)

Here is an example of one: http://www.newegg.com/Product/Product.aspx?Item=N82E16812198022

Make sure your powersupply can support that type of load.
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post #3 of 14
Thread Starter 
Thanks for your reply.

What can I do to check if my PSU can support the load?
as I mentioned above, I'm using a CoolMax CU-700B
NewEgg Claims: "+3.3V@28A, +5V@28A, +12V1@18A, +12V2@16A, +12V3@16A, -12V@0.5A, +5VSB@3.0A" as output.
post #4 of 14
i'd spend the money for a better psu with more amps on the 12v rails.
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post #5 of 14
The minimum recommended specifications for the 580 are 600 W w/ 42 amperes on the 12 V rails.

I'm not sure of the quality of the "coolmax" brand. I wouldn't use a PSU that I wasn't confident in if it was my money on the line.
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post #6 of 14
Good Quality 450 is all you need, Rosewill Capstone is gold rated and cheap ! Seasonic 450 is also a great choice. thumb.gif
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post #7 of 14
I remember sticking a PCI-E power cable into my CPU's 12+V connector and it blew up the PSU, Motherboard and CPU was still fine, however, my motherboard wouldn't let my crossfire no more. This was years ago though haha!
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post #8 of 14
Get a new power supply; that Coolmax unit is crap.
I'd be surprised if it actually generated a 500watts.
 
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post #9 of 14
Get at least 550 W system.

Here is a link for OCN's recommended PSUs: http://www.overclock.net/t/183810/faq-recommended-power-supplies

You want at least 42 amperes on the 12 V rails, per nVidia specifications. You will want more amperes and power output if you want to OC.
Hex
(11 items)
 
OLD C2D
(8 items)
 
 
CPUMotherboardGraphicsRAM
Xeon X5660 ASUS Sabertooth x58 Diamond 7970  Kingston 
Hard DriveOptical DriveCoolingOS
WD Black Blu-ray :) Win 7 64-bit 
PowerCaseAudio
HX750 (modular) Antec 300  Sound Blaster Titanium  
CPUMotherboardGraphicsRAM
E6400 Intel D975XBX2 EVGA 8800 GT 4 GB 
Hard DriveCoolingOSPower
Seagate Coolmaster N520 Win 7  550 W 
CPUMotherboardGraphicsRAM
Athlon x2 4200 Asus M2N32-SLI Deluxe 3870 2 x 2 Gb 
Hard DriveOSPower
320 Gb Windows Vista 64-bit 550 W Modular 
  hide details  
Reply
Hex
(11 items)
 
OLD C2D
(8 items)
 
 
CPUMotherboardGraphicsRAM
Xeon X5660 ASUS Sabertooth x58 Diamond 7970  Kingston 
Hard DriveOptical DriveCoolingOS
WD Black Blu-ray :) Win 7 64-bit 
PowerCaseAudio
HX750 (modular) Antec 300  Sound Blaster Titanium  
CPUMotherboardGraphicsRAM
E6400 Intel D975XBX2 EVGA 8800 GT 4 GB 
Hard DriveCoolingOSPower
Seagate Coolmaster N520 Win 7  550 W 
CPUMotherboardGraphicsRAM
Athlon x2 4200 Asus M2N32-SLI Deluxe 3870 2 x 2 Gb 
Hard DriveOSPower
320 Gb Windows Vista 64-bit 550 W Modular 
  hide details  
Reply
post #10 of 14
Thread Starter 
Thanks for everyone's reply. I have decided to take your advice and get a new PSU.
I'll be heading to Micro Center sometime this week to do so.

Any suggestions for my specific build?
I'm only running a single GTX 580 3GB with an ASRock Z77 Extreme4, 16GB DDR3-1600 memory, 1 SSD (Samsung 840 120GB), 1 HDD (2tb WD Green), a water cooling system, about 7 fans, and an i5-3570k OC @ 4.5ghz
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