Huge problem with Motherboard and GPU! PLS HELP!

DenizYildiz · Nov 9, 2014

Hi Guys,

I HAVE A HUGE PROBLEM PLS HELP ME

So I am building a gaming pc.
Motherboard: ASRock H77 Pro4/MVP
GPU: MSI gtx660 Twin Frozr 3 OC 2GB
PSU: TechSolo TP-730

Recently I have read that my GPU needs a 6 pin connector.
My PSU does have that one, but only 1. it has 1 6 pin connector, with another 2 pin connector wich is not attached to it, but it is connected to the same cable output.
But my motherboard also has the 6 pin plug. So my problem is:

Where do I have to plug the 6 pin connector into? into my motherboard, or into my GPU, or am I just scr*wed because my PSU only has 1 6 pin connector?

RealBeast · Nov 9, 2014

Your motherboard uses an ATX12V either 4 or 8 pin connector.

A PCIe 6/8 (6 with an extra 2 available) pin connector is *totally* different and goes to your graphic card. While the two should not be interchangeable as the pins should be differently keyed, make sure that you know which is correct.

Your ATX12V is a 4+4 pin connector on that PSU, and your board uses both as it has an 8 pin ATX12V connector on the board.

Bottom line is that you have the connectors that you need.

tambeshakunt · Nov 9, 2014

The 6 pin connects into the GPU. It has the 2 pin breakaway because some GPUs need 8 pin.

Depending on your GPU this will be either 1 or 2. If you need 2, you will need a new PSU.

Mr5oh · Nov 9, 2014

You need to plug in both.

That PSU is less than ideal.

If the 8 pin connector you have has 2-pins that are loose, that 6-pin should plug into the video card. Plug 6-pin into the motherboard. The connectors should be keyed so you can't plug them in wrong.

If this is not possible, you will need an adapter that takes the molex (4-pin) connectors to a 6-pin.

DenizYildiz · Nov 9, 2014

Look, there is a standard atx power connector with 24 pins, right? but there also is another connector on my motherboard. it has 8 pins. where does the pcie connector go to then? into the GPU or into the 8 pin motherboard? ( and if it doenst go into the motherbard, what use is the 8 pin connector of )

DenizYildiz · Nov 9, 2014

Guys, so if I think this way: The 24 pin just goes into his place, the 2x 4 pin 12 v connector (wich can be coupled together to 8 pins) goes into the 8 pin connector on the motherboard, and the 6+2 (PCIe) connector just goes into my GPU and then it will all be allright.

Is this the correct way of thinking in this case?

RealBeast · Nov 9, 2014

DenizYildiz :

Yes.

DenizYildiz · Nov 9, 2014

RealBeast :

Maybe a little stupid question, but why does my the 24 pin ( referred to the Wattage scheme on my PSU) give about 260W and the 2x4 pins 450w!?

RealBeast · Nov 9, 2014

Not stupid at all. It is a historical problem, the 20 and then 24 pin power connectors were adequate at the time they were placed into service, but CPU and GPU power demands kept rapidly increasing, outpacing what the main power connector could supply.

Rather than redesign the main power connector and how much various motherboard circuits could deliver, supplemental connections were added. Even those new connectors have increased their specs since their introductions due to additional power needs.

Look at the number of yellow wires on the 24 pin connector and on each 4, 6, or 8 pin connector. Those are the +12V that account for much of the rated wattage of a PSU. Recall that watts = volts x amps. Check the amps on the lower voltage lines (3.3 and 5V), it is low and only is about 150-175W on a 750W PSU, most of it is 12V -- and that is what is used by the CPU and video cards.

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Huge problem with Motherboard and GPU! PLS HELP!

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