If that is true, then manufacturers are "cutting it bit fine", if you ask me.
I'd have thought it would be very cheap and easy to design a MB/PSU connector to withstand at least twice it's highest expected load.
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24 pin MB Connector Burnt!
- Thread starter RichardH754
- Start date
If that is true, then manufacturers are "cutting it bit fine", if you ask me.
I'd have thought it would be very cheap and easy to design a MB/PSU connector to withstand at least twice it's highest expected load.
Soldato
- Joined
- 30 Nov 2011
- Posts
- 11,378
yeah, the 24pin standard is quite old now... the original ATX standard goes back to 1995
in fact even since then motherboards tend to come with auxillary connectors of some kind like the various CPU ones (4-pin or 8-pin) - having a board capable of 4-way SLI with no Graphics aux connector is pretty irresponsible
going to tri-sli, I have also connected up an EVGA power boost
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Don
http://www.molex.com/molex/products/datasheet.jsp?part=active/0039012240_CRIMP_HOUSINGS.xml
13A per pin, 2x12v pins = 26A in theory = 312W... 4x 75W PCI-E = 300W so yeah not great.
http://www.formfactors.org/developer/specs/ATX12V_PSDG_2_2_public_br2.pdf
- ATX2.2 Spec
actual molex part for connectors
Isn't the EVGA Power boost a really bad thing though? Surely that is bypassing any VRM circuitry on the motherboard or is PCI-E +12v unfiltered and then filtered by on card VRMs?
As this thread has been revived..
I saw no evidence of burning on my Gigabyte EX58-UD5 from my corsair HX850, I just last week retired my gigabyte 470SoCs and replaced with EVGA GTX670 FTWs, which should draw much less than the 470s (which were factory overvolted). CPU is a i7 920 @ 4GHz. It's behaving well for a 3 year old.
I saw no evidence of burning on my Gigabyte EX58-UD5 from my corsair HX850, I just last week retired my gigabyte 470SoCs and replaced with EVGA GTX670 FTWs, which should draw much less than the 470s (which were factory overvolted). CPU is a i7 920 @ 4GHz. It's behaving well for a 3 year old.
I suspect that it's down to luck. If the connection is good and solid between the pin and connector, there will be less heat build up (due lower resistance). As long as the connection remains good, there is little chance of any arcing or burning. If the connection between pin and socket is not so good, any high current flow will cause heat build up and possible arcing, Once that starts, it almost certain that it will deterioarate and you'll soon have a problem.
I used to see this regularly with certain plugs and sockets inside CRT TV sets. Certain models would suffer from this fault, but not every single example would have the problem. It's simply due to the connection not being strong or reliable enough. The actual metal of the socket/pin should be able to carry the current, it's any weakness at the point of metal to metal contact where the trouble lies.
Hi guys
Sorry reviving this thread again, but i found it better than open a new one
Now i have a 4770k @ 4.5 2 GTX 780 SLI and a GA-Z87X-OC Force Motherboard
This new motherboard have the sata connector to safe a burn with SLI or something like that
Now comes the question, i forgot when mounting my rig to plug this sata but i plugged the EVGA power Boost that i always used in my old boards that did not have the connector, the MB sata connector is in a not good position to plug now that everything is done, if i just let the EVGA power boost plugged in the PCI Express slot will be the same job as if i connnect the sata on the MB or should i remove the power boost and connect the sata on the MB?
Thanks
Sorry reviving this thread again, but i found it better than open a new one
Now i have a 4770k @ 4.5 2 GTX 780 SLI and a GA-Z87X-OC Force Motherboard
This new motherboard have the sata connector to safe a burn with SLI or something like that
Now comes the question, i forgot when mounting my rig to plug this sata but i plugged the EVGA power Boost that i always used in my old boards that did not have the connector, the MB sata connector is in a not good position to plug now that everything is done, if i just let the EVGA power boost plugged in the PCI Express slot will be the same job as if i connnect the sata on the MB or should i remove the power boost and connect the sata on the MB?
Thanks
Soldato
Yes I would have thought that the power boost will do the same job as the sata power connector, but as your board has a dedicated sata connector for extra poawer to the pci-x lanes I would use that to be honest.
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I was looking here and i don't have sata power connectors avaiable in my PSU anymore, used all of then, what should i do now? Worring about to left the power boost on the PC as this MB has your own connector, at least if they both do the same i left the power boost one in the machine, don't wanna loose another MB burned
Thanks again guys
Soldato
Try to get a molex to sata convertor cable?
http://www.overclockers.co.uk/showproduct.php?prodid=CB-052-GE&groupid=1929&catid=1928
http://www.overclockers.co.uk/showproduct.php?prodid=CB-052-GE&groupid=1929&catid=1928
Still running 3 cards with no power boost, but not had a problem yet again!
New MB though and a lot less power with 3 680s rather than 3 480s!
New MB though and a lot less power with 3 680s rather than 3 480s!
Ok i'll get one of this
But when i install should i remove the power boost or let both connected? The MB one and the boost one
Should be better to install a sata power connector directly from the PSU to the MB or this molex or with the molex the job will be the same and i won't loose the real performance?
And can i continue using the PC with the power boost safely untill i find the molex or a solution to connect at the MB?
Thanks again
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I found a molex converter, the one that you showed and connected to the MB, now should i remove the powerboost or can i let both connected?
The molex has the same performance if i was using a sata power from the PSU?
Thanks again guys
The molex has the same performance if i was using a sata power from the PSU?
Thanks again guys
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Soldato
I would remove the power boost
I would remove the power boost
Ok i`ll do that, but just to be sure that the board connector is for that puporse can you take a look at the mobo picture and what the connector says?
here it is, the place to connect the sata is marked with a red arrow
The manual reffer to this port like this:
3) OC_PEG (PCIe Power Connector)
The power connector provide auxiliary power to the onboard PCI Express x16 slots. When two or more graphics cards are installed, we recommend that you connect the SATA power cable from the power supply to the OC_PEG connector to ensure system stability.
And the last 2 questions, the molex will send the same performance as if it was connected directly from PSU Sata energy right?
And the latest one, this just to knowledge, should i have some issues if i leave the power boost with the MB connector? What could cause?
Please just let me know if the MB image connector and the description is what we are talking about, a connector to save the board to be burned, just what i did till now using the power booster
And sorry for my english
Right that is telling you that the connector simply uses a sata power connector to supply auxiliary power to the mainboard. Technically the molex to SATA converter is the same but the additional connection adds a small amount of resistance which will reduce the current supply through that connector.
I would recommend using the Molex to SATA converter for hard drives and use a standard SATA connector for the motherboard, but it probably doesn't matter.
I would recommend using the Molex to SATA converter for hard drives and use a standard SATA connector for the motherboard, but it probably doesn't matter.
This new Motherboard should be more able to supply sufficient power to the slots than your old board.
It is always worth using this extra power power connector with more than one card, but I would think it would not burn out without it with just 2 GFX Cards
Your old Power Boost is not required, It was only needed because your old motherboard did not have the Axillary power connector and your 580's pulled more power than the Slot was designed for. I have not seen the same problem with the 780's
It is always worth using this extra power power connector with more than one card, but I would think it would not burn out without it with just 2 GFX Cards
Your old Power Boost is not required, It was only needed because your old motherboard did not have the Axillary power connector and your 580's pulled more power than the Slot was designed for. I have not seen the same problem with the 780's
Ok i`ll do that, but just to be sure that the board connector is for that puporse can you take a look at the mobo picture and what the connector says?
here it is, the place to connect the sata is marked with a red arrow
The manual reffer to this port like this:
3) OC_PEG (PCIe Power Connector)
The power connector provide auxiliary power to the onboard PCI Express x16 slots. When two or more graphics cards are installed, we recommend that you connect the SATA power cable from the power supply to the OC_PEG connector to ensure system stability.
And the last 2 questions, the molex will send the same performance as if it was connected directly from PSU Sata energy right?
And the latest one, this just to knowledge, should i have some issues if i leave the power boost with the MB connector? What could cause?
Please just let me know if the MB image connector and the description is what we are talking about, a connector to save the board to be burned, just what i did till now using the power booster
And sorry for my english
Guys how are you?
I decided to revive this thread instead open another one to talk about the same
I used the EVGA power boost when i had my 580 SLI to not burn again my Mobo and PSU, now i have a GTX 980 SLI, but the motherboard OC_PEG connector is broken, a friend of mine broke the connector, do i still need to use the power boost to clen the 12v rail to pci express or with the new boards it`s not necessary anymore? This week i`ll receive my Titan X SLI and now i use the 980 SLI, so should i still use the power boost or it does not matter? with or without will be the same and i`ll be safe for board burning?
Thanks