kenable 8 Pin PCI Express PCIe Power Cable from Dual 4 Pin Molex LP4 Adapter

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i can run a 150w gts 250 just fine with molex - sata - 6+2 pin adapter, you can say its gonna catch on fire all you want but unless the cables get really hot and actually pose a risk of catching fire you arent gonne convince me, atm even if i stress it the cables seem to only get w arm, from what i can tell its around low 30c in temp If it doesnt catch on fire then id consider it fine but a setup like this is def risky, if your adapter or psu has thin wires then thats when you should consider swapping out the psu or just getting power from other stuff like molex to 8 pin adapters

Braided Cables - PSU - Braided extension adaptor - Scan Braided Cables - PSU - Braided extension adaptor - Scan

The pci-e slots are powered by the only 2 (if my memory is correct) 12v wires in the 24 pin connector. So, assume around 200 watts can go into the motherboard through the 24 pin connector, which are then split between fan headers, rgb headers, and possibly 12v to 5v / 3.3v dc-dc converters on the motherboard that may power things like ram, m.2 connectors (m.2 has only 3.3v but because a m.2 SSD may go up to 3A when writing, some motherboards don't use the 3.3v from PSU but use a dc-dc converter to produce clean 3.3v from 12v) The PCIe 8 pin connector has 3x 12v wires. The extra is a sense wire such is why not all of the pins on the PSU side need to be populated. Second all holes do not need to be populated on the power supply side. 8 pin can 100% function with just 6 pins being used on the power supply side, because two of the pins are just for sensing ground. IF your power supply has only one 8 pin connector, the first thing you should do is to look at the label of the power supply and see how much current the psu can actually supply on 12v (doesn't matter how many adapters you have, if the power supply can only produce 250-300w on 12v) and second ask yourself if you trust the power supply to not lie about its capabilities on the label. If it's from a brand with decent reputation, chances are it's not lying. If it's some cheap model or some chinese psu that came with the case, most likely the psu is inflating the numbers.This high quality 8 Pin PCIE extension cable is the best solution for messy and untidy PC systems. Each of the 8 individual wires come sleeved and plugged inside the PCIE connector. This cable comes with two clear cable combs . You can have pci-e 8 pin to 2 x pci-e 8 pin adapters - these would be your best bet. You know the input can take nearly 300w and then you have 2 8 pin connectors, so lots of wires between the input and output. Unfortunatelly it's not true that you cannot connect PCIe 8-pin plug to EPS-12V (EATX) motherboard slot. It might be only an exception found with FSP PSU, but a single difference in one male pin on PCIe connector allows to plug your PSU totally wrong.

8-pin EPS12V and PCI-E connectors? Is there a difference between 8-pin EPS12V and PCI-E connectors?

I have a Antec 850 w - High Current Gamer ATX12V/EPS12V. I had a friend that came by with his Corsair cable and it indeed not fit. It seems that all the bottom pins have a bevel on the bottom and won't accept the square ones. This power supply have 2x 12v connectors. I was using this image as reference, probably wrong for what you say... although i been using 2 GPUs with the same cable....If you get a real high end card. using true 6+2 Y cable gives you all the power you need, else the card could throttle to low power mode.