Video card does not see 6pin connector

May 31, 2011 at 07:57:53
Specs: Windows Vista
Hi there, I have recently installed a Geforce 7900 GTX and a new 500w power in my 3 year old PC. I have noticed that there is a nVidia graphics menu that indicates that I must connect the 6pin power supply! I can confirm that I have this connector connected to the card, should I uninstall the software then re-install, will this help resolve the issue?

Any advice would be appreciated!

Best Regards

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May 31, 2011 at 08:39:06
Why the old v-card? I don't see any issue mentioned. Post the system specs include psu specs(+3.3v, +5v, +12v).

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.

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May 31, 2011 at 08:54:10

Reason for the old video card is that it is better than the 6800 card I had!

The PSU specs are as follows:

+12V technology; Version 2.0 psu
24 Pin;
4 pin +12V;
1 x 6 pin Pci-e;
2 x SATA;
4 x 4 pin power;
1 x floppy connector

Rear on/off power down switch
Over voltage and circuit protection +3.3, +5V, +12V
CE/FCC UL approved
EMI Filter built in
Colour retail boxed
For Socket 775, Am2 and all backward CPU's
ROHS Compliant
Dimensions W 150 H86 D 140mm
+3.3V 28A;
+5V 38A;
+12V 20A;
-12V 0.8A;
+5vsb 2.0A

I hope that helps,


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May 31, 2011 at 09:20:57
Horrible specs, are you sure you copied them correctly? There's way too much amperage on the under-used +5v rail, not nearly enough on the important +12v rail. Generally speaking, the +3.3v & +5v rails should be rated at approx 20A & the +12v at 30A.

I also question the video card choice. While the 7900GTX is better than a 6800, it's still an old card. Modern cards are much more efficient & put out more graphcis horsepower while using less energy. For example, the Radeon HD 5670 or Geforce GT 240 would run circles around the 7900GTX & neither of them require the 6-pin PCIe plug. A decent 300W PSU could handle either of these cards.

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May 31, 2011 at 09:26:43
Thanks for the advice, I think I will replace the card in the near future :)


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June 1, 2011 at 00:29:32
Will the Radeon 5670 work with a three year old PC / motherboard supporting E4500 CPU Dual core 2 GHz and DDR2 Ram? I am not sure if the newest technologies are compatible with older systems, any advice will be appreciated.

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June 2, 2011 at 13:41:54
Advice was already given. Why would any of us suggest a card that we feel wouldn't work?

Best Graphics Cards For The Money: May 2011

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