PCI-E Melted

keikeimok · 2 Oct 2013 at 16:03

I've got one of the PCI-E 8 pin melted on one of the HD 7990 Plug. Pretty scary as I noticed white smoke and burning smells from the fans.

I've changed to new cable now and wonder if that was the problem of poor connections or what....

Thank god I was at home, or it will be a disaster. Dun wanna burn my house with that.

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tribz · 2 Oct 2013 at 16:24

What brand was the PSU?

keikeimok · 2 Oct 2013 at 16:50

OCZ 1250W

twist3d0n3 · 2 Oct 2013 at 16:55

probably a small gap between the pins causing arcing

Nickolp1974 · 2 Oct 2013 at 16:55

keikeimok said:
OCZ 1250W

i'd be inclined to change that running 2 x 7990's, very power hungry and will stress any psu.

humbug · 2 Oct 2013 at 16:57

Thats scary, i never did like OCZ's stuff, is the card ok?

spixelspixel · 2 Oct 2013 at 17:09

I think you should take this as a warning, your psu no likey 2 7990's

Nickolp1974 · 2 Oct 2013 at 17:23

spixelspixel said:
I think you should take this as a warning, your psu no likey 2 7990's

+1

i'd be looking at one of these

YOUR BASKET
1 x Corsair AX1200i Digital ATX '80 Plus Platinum' Modular Power Supply (CP-9020008-UK) £259.99
1 x Antec High Current Pro 1200W Modular '80 Plus Gold' Power Supply £239.99
1 x Seasonic X-Series 1250w '80 Plus Gold' Modular Power Supply £219.95
Total : £734.03 (includes shipping : £11.75).

pawl · 2 Oct 2013 at 17:33

wow like you said, lucky u were home.

never liked OCZ stuff, had to RMA probably half of the stuff ive bought from them. yet i am hideously unlucky with gear

Nelly · 2 Oct 2013 at 17:39

What motherboard was you using? Also how overclocked are they?

I just asked on the Johnnyguru forums, and someone mentioned excessive current draw through the connector.

keikeimok · 2 Oct 2013 at 19:38

humbug said:
Thats scary, i never did like OCZ's stuff, is the card ok?

both of them are ok...

before this happened, my window will hang anytime it likes, I was thinking it might be the drivers.
After a clean install, things aren't improving.

I think that was the signs and symptoms of this kind of problems.

decto · 2 Oct 2013 at 19:39

It will be a faulty connector.

If the metal contacts do not make a secure connection this increases the resistance at the junction and will cause the pins to get very hot very quickly when you draw a high current. Either that or a wire not properly crimped to the connection will cause this.

Common with industrial breakers etc. which when cables aren't tight.

Nothing to do with the PSU output, purely a connection issue.

AD

keikeimok · 2 Oct 2013 at 19:41

Nickolp1974 said:
+1

i'd be looking at one of these

YOUR BASKET
1 x Corsair AX1200i Digital ATX '80 Plus Platinum' Modular Power Supply (CP-9020008-UK) £259.99
1 x Antec High Current Pro 1200W Modular '80 Plus Gold' Power Supply £239.99
1 x Seasonic X-Series 1250w '80 Plus Gold' Modular Power Supply £219.95
Total : £734.03 (includes shipping : £11.75).

Yep, those PSU are top of the line, I've been using this OCZ for 1 year without problems. I was thinking if I really need to change it.

I dunno if there is a problem of the PSU, shouldn't be the plug at the PSU side be melting?

keikeimok · 2 Oct 2013 at 19:45

Nelly said:
What motherboard was you using? Also how overclocked are they?

I just asked on the Johnnyguru forums, and someone mentioned excessive current draw through the connector.

I am using ASUS Z87 Deluxe. I am not overclocking at the momment, not even the GPU, this thing really put me on the edge. I kept looking at the plugs from the windows from time to time now and sniff on the exhaust for any smells too.

>.<

keikeimok · 2 Oct 2013 at 19:47

decto said:
It will be a faulty connector.

If the metal contacts do not make a secure connection this increases the resistance at the junction and will cause the pins to get very hot very quickly when you draw a high current. Either that or a wire not properly crimped to the connection will cause this.

Common with industrial breakers etc. which when cables aren't tight.

Nothing to do with the PSU output, purely a connection issue.

AD

wow, that soothe a bit of my nerves. but how do I know if they are tight enough? Is there any test apart from that scary white smoky test I 've got yesterday night?

ATIorNvidia · 2 Oct 2013 at 19:59

Probably a loose/faulty or overloaded connector. 1250W is more than enough for 2x 7990/4x 7970 overclocked and the OCZ ZX series are very well built Great Wall OEM units.

Edit: It's possible if you really pushed the cards that you overloaded the connectors, and since that's a single rail unit the OCP is set too high for it to be useful. The 7990's should really have 3x 8 pin connectors.

Nelly · 2 Oct 2013 at 20:39

Mentioned it here >> http://www.jonnyguru.com/forums/showthread.php?t=11032

Doco · 2 Oct 2013 at 20:40

That doesnt look healthy atall :-o

, like you said though - atleast you were home!

keikeimok · 2 Oct 2013 at 21:06

so it was a design flaws then....I am stuck with the card now, dunno what I can do with them.
RMA to MSI?

RichardH754 · 2 Oct 2013 at 21:34

decto said:
It will be a faulty connector.

If the metal contacts do not make a secure connection this increases the resistance at the junction and will cause the pins to get very hot very quickly when you draw a high current. Either that or a wire not properly crimped to the connection will cause this.

Common with industrial breakers etc. which when cables aren't tight.

Nothing to do with the PSU output, purely a connection issue.

AD

This!