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Faulty 6-pin PCI-E connector?

Last response: in Graphics & Displays
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January 9, 2012 6:40:51 PM

Hi guys, I'm having the same problem as the poster here:
http://www.tomshardware.com/forum/310967-33-faulty-powe...

I have a 7800GTX powered by a 470w PC Power&Cooling PSU (supposed to be top of the line). When the 6-pin cable is connected to the card, nothing in the computer will turn on. Sometimes the CPU fan budges when I press the power button. When the 6-pin cable is disconnected, the computer turns on fine, but of course there's no display...

Is this a problem with the power supply, the graphics card, or something else? I don't have any other graphics cards to test with except a lower-grade Radeon from my dad's computer which doesn't require the 6-pin. Computer seems to work fine with it (although the fan on it makes a loud grinding noise; hopefully that's not new).

a b U Graphics card
January 9, 2012 7:08:17 PM

Most likely a bad GPU, but the only way to tell is if you have a volt meter and check the pins, or if you have a different GPU to test with. 7800 is a very old GPU, it is very likely at the end of it's lifespan.
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a c 181 U Graphics card
January 10, 2012 12:20:29 AM

Could you check your 7800 by putting it in your dad rig. Just a though. Also do you have any friends you could take it to them and check it out or have them bring one to you to check it in your rig.

In my opinion I think you shoule get a new one and depending on what type of power supply (PSU) you have and brand name plus all the specs from your rig like ram CPU etc. Then we could help you find a good low priced card that would do what you need it to do.
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a b U Graphics card
January 10, 2012 2:17:43 PM

Nostigex said:
Hi guys, I'm having the same problem as the poster here:
http://www.tomshardware.com/forum/310967-33-faulty-powe...

The problem there seems to be that the OP was trying to power a more powerful card with a lousy psu
Nostigex said:

I have a 7800GTX
Single or dual slot ? They are both pretty old cards at this point
Nostigex said:
powered by a 470w PC Power&Cooling PSU (supposed to be top of the line).
Certainly was , in it's day, wouldn't be considered that by todays standards
Nostigex said:

Is this a problem with the power supply, the graphics card, or something else?

Don't know what the rest of the system is, so it's hard to guess.
The dual slot 7800 was a power hog according to this
http://www.anandtech.com/show/1861/2

Thier system was flirting close to the 12v rating of your psu, capacitor aging ( oh my God ) does exist, could be the psu.
Old card, could be the card.
Only way to find out is to have a way of testing at least one of them.
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January 16, 2012 11:07:38 PM

Hey guys, sorry it took me a while to reply. The 7800 GTX is very long and doesn't fit inside other computers I've tried.

Quote:
Single or dual slot ? They are both pretty old cards at this point


It's a eVGA 7800GTX w/ACS3 (not the KO edition)

I ordered an unused 9600 GT, which has a 6-pin connector so I can test it out in my computer. If it still doesn't work I'm going to assume that the PSU is faulty. I've had a support ticket going with PC Power&Cooling, so I should be able to get a replacement if that is the case.

I'll let you guys know what happens when the card gets here. Oh, and here are my PC components:

Asus A8N32-SLi Deluxe | AMD x2 4400+ | eVGA 7800 GTX ACS3 | X-Fi Xtrememusic | 2 Gigs Corsair XMS | PC P&C Silencer 470w | Cooler Master CM Stacker | Ubuntu 10.04 dual-booted with Windows XP Pro
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January 22, 2012 9:43:18 PM

I got the 9600 GT a few days ago and popped it in. The computer started up fine with no problems. So I'm going to assume the old graphics card (7800 GTX) died; though I never tested it in another computer.
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January 22, 2012 9:47:23 PM

Best answer selected by Nostigex.
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a c 271 U Graphics card
January 22, 2012 10:07:08 PM

This topic has been closed by Mousemonkey
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