donta1979

Yes that would hold true but I have been though 3x psu's due to this issue, first couple times it just burned out my psu, the antec 1200w did it in. I dont think all three of them had poor connectors. Thermaltake Toughpower 1000w"no modular cables", Corsair 1000hx, and an Antec TPQ 1200w. so its more than just a bad connection. At least the first two psu's just died and didnt do anything the antec tpq 1200w just kept going  then bad bad stuff started to happen...

As shamino has stated what happens is that connector gets too hot, causing the melting of plastic, the pin on the psu will darken from extreme heat. The psu starts pumping massive voltage into the 12v's on the 24 pin to meet the demand of the gpus power draw from the mobo as shamino stated he made the pcie lanes stronger than normal to keep them from burning up from high power consumption gpus. But only so much power can go though due to resistance. The end result is a burned 24pin, dead psu, dead hardware, and if the psu goes off the deep end can cause a ton of issues. even a fire. What the molex does is solves the issue of the power demands, enough gets to the board for the pcie slots allowing the 24pin to stay cooler on its 12v pins because the amount of power that was being pumped though there has been greatly reduced, basically lessening the load on your 24pin. Pretty simple concept really. But your right a poor connection can cause this too.
We can talk about the cause as much as you like but shamino already stated the reason on his post on xtremesystems, like the beefing up of the pcie lanes, but the last thing to complete the board would had been the molex cable put on. That is why the Classified 3 has one to keep this kind of thing from happening.

HRPuffnstuff

So I'm here in the evga mb section and I keep seeing the name asus popping up.  Why is another manufacturer being actively discussed in the evga mb forum?  I still own asus mb's however I don't come here to talk about them.  From what I've seen so far it seems like its time the lock this thread down.

HRPuffnstuff
So I'm here in the evga mb section and I keep seeing the name asus popping up.  Why is another manufacturer being actively discussed in the evga mb forum?  I still own asus mb's however I don't come here to talk about them.  From what I've seen so far it seems like its time the lock this thread down.

antec_jessie

I find it strikingly odd that an Antec rep would post in this thread as Antec has been a very strong proponent of the multi rail psu design.

My posting here has nothing to do with the design of our power supplies. My presence here is to simply provide assistance where possible and to gather information that might help us help you (insert Jerry Maguire here). 

recon 7185

antec_jessie

I find it strikingly odd that an Antec rep would post in this thread as Antec has been a very strong proponent of the multi rail psu design.

My posting here has nothing to do with the design of our power supplies. My presence here is to simply provide assistance where possible and to gather information that might help us help you (insert Jerry Maguire here). 

I do have a question concerning the antec TPQ 1200. My northbridge on the x58 LE shorted out and the tpq 1200 kept going and did no shut itself off. Donta said that his other 2 PSU's died and the TPQ 1200 kept going and thats when I assume the pins melted. Is there not a specific safety feature on the TPQ that would protect hardware? Every other case where I have had a short or something out of the ordinary my PSU would shut off. Not bashing at all, in fact I love antec's stuff, just want to check before I get a new SLI approved PSU prefferably from antec

pkpjoker

Hi, I have been wondering about a couple of things and apologize if it has been covered before. If I choose to do the molex mod, does it void the warranty? Also, does it matter where the voltage is added to the 24 pin connector? It seems to me that the molex mod is just putting the extra voltage on the back side of the pins of the 24 pin. Could you put it on the front side? Could you use a sub-harness between the psu 24 pin and motherboard connector with the molex attached to it. This would eliminate the need for modification of the motherboard

donta1979

pkpjoker

Hi, I have been wondering about a couple of things and apologize if it has been covered before. If I choose to do the molex mod, does it void the warranty? Also, does it matter where the voltage is added to the 24 pin connector? It seems to me that the molex mod is just putting the extra voltage on the back side of the pins of the 24 pin. Could you put it on the front side? Could you use a sub-harness between the psu 24 pin and motherboard connector with the molex attached to it. This would eliminate the need for modification of the motherboard

you do not want it on the 24 pin on top that will add still extra stress on the 2x 12v pins more power being put there, plus those pins with the extra wires might not mount how they are supposed to also causing a possible meltdown of the 24pin due to a bad connection., it needs to be on the bottom or in the case of the classified 3 put someplace else. Additing it if you do it right and can solder well add some hot glue you will not void your warranty as long as you can return the board to its original state before sending it in.

donta1979

pkpjoker

donta1979

pkpjoker

Hi, I have been wondering about a couple of things and apologize if it has been covered before. If I choose to do the molex mod, does it void the warranty? Also, does it matter where the voltage is added to the 24 pin connector? It seems to me that the molex mod is just putting the extra voltage on the back side of the pins of the 24 pin. Could you put it on the front side? Could you use a sub-harness between the psu 24 pin and motherboard connector with the molex attached to it. This would eliminate the need for modification of the motherboard

you do not want it on the 24 pin on top that will add still extra stress on the 2x 12v pins more power being put there, plus those pins with the extra wires might not mount how they are supposed to also causing a possible meltdown of the 24pin due to a bad connection., it needs to be on the bottom or in the case of the classified 3 put someplace else. Additing it if you do it right and can solder well add some hot glue you will not void your warranty as long as you can return the board to its original state before sending it in.

I thought that the heat build-up in a circuit is caused by excessive current draw. Shouldn't adding the extra voltage at either point satisfy the power demand and lower the current draw?

the bottom yes, but your putting too much voltage in the same spot if you add say the molex to the 24 pin you are going to give it enough power but you still have to deal with the resistance of the pins.  If what you where talking about just adding a molex on the 24 pin of the psu your still limited to the resistance of the 12v pins on the 24 pin that where not designed to pump that much power into the mobo, thus the molex mod is on the backside of the board not only does it supply more power to the pcie lanes, but it reduces the amount of power on the 12pin that the 12v's have to deliver to the board. Really simple concept actually.