![]() The difference between the two methods gets to be somewhat complicated if you are not familiar with electronic engineering, but suffice it to say that method two is the better one in most circumstances. In fact, there are also 6-pin PCI-E to 8-pin ATX12V adapters as well, and probably others (though you indicated that the PSU does not have this). ![]() These are fairly cheap too (~$2 with shipping). There are others (figure 5) that have two separate Molex connectors (one for each half of the 8-pin) which you can plug into Molex connectors from different cables from the PSU for extra peace of mind. There are different ones available which either split a single cable across the two halves of the 8-pin connector (which is generally not going to be a problem since that is what happens when you plug the three or four connectors on one cable into multiple drives, etc. Like you said, a Molex-to-8pin adapter is a good option too. Of course the problem with this method is the same as the previous one in that there is no additional power being supplied this method simply splits the power from one source across the two halves of the connector. In fact, there are plenty such adapters on eBay for as little as $1 (and free shipping). This makes sense because the connector is generally for providing the CPU with extra power (as opposed to any power), so while it may work, the system may suddenly shut down if CPU usage goes up to 100% (eg while doing a virus-scan, watching YouTube videos, etc.)Īnother option I have found is some discussions ( like this one) about using an adapter (figure 4) to connect the 4-pin cable to both halves of the 8-pin connector. I found a page (figure 3) that indicates that it can be done, but strongly advises using a proper 8-pin cable. If you look at the pinout of the 8-pin socket and the 4-pin cable (figures 1 and 2 below respectively), you will notice that physically, it should be compatible. of the manual to the motherboard says that the 8-pin connector is for supplying power to the CPU. Is it OK for him to use the PSU's ATX 12v 4-pin and just stick it in one half (I'm assuming the EPS 12v 8-pin is keyed correctly?) of the 8-pin connector?Įdit: Following up on Synetech's answer, would this ultimately solve my issue since it combines a P4 with a 4-pin molex to turn it into a full-blown 8-pin EPS 12v plug? ![]() He has no plans to overclock the spare build, and he's using a relatively lower end video card. The only caveat here is that the 600W only has a ATX 12v 4-pin connector and nothing else. Now to make this use up as little money as possible (he just wants this PC to be made for his gf, it won't be for gaming), I have a spare Coolermaster 600w from awhile back that I can provide to him. The only thing he's missing is a power supply. He recently upgraded to a Core i5 gaming build, so he has this leftover build composed of some old parts he has lying around: There's many similar questions to this, and because the answers vary depending on the setup, I want to ask for my friend's specific setup.
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