I have a 500W power supply that surprisingly lacks a 6-pin connector, and I'm trying to power my RX 570 using a dual SATA to 6-pin connector. To break it down: if each SATA connector supplies 54W, that totals 108W going to the 6-pin. The GPU can also receive at least 75W from the PCIe slot. So, combining these, it seems like the GPU could potentially use 160W. Are my calculations correct, and is it safe to proceed? I've heard that powering GPUs through SATA can lead to overheating or fire risks, but I've found that this usually happens when the GPU tries to draw too much power. Since the RX 570 draws under 150W and my PSU is 500W, I'd love to know if this setup will work safely!
6 Answers
It’s a bit of a gamble. Plenty of people use these adapters, but it can get sketchy. Just be careful and monitor everything to avoid overheating.
You should really check what PSU you have. The 6-pin you're talking about usually comes from an 8-pin connector, where you'd use the 6 pins and leave the 2 hanging. I’d advise against using SATA adapters unless it’s a last resort.
Sounds like you might be pushing it. If it came with just basic connectors, it might not handle the load well. I'd check the specs on it before proceeding.
Using a dual SATA to power your GPU is risky but might work if you're careful. Just remember, some GPUs pull very little or even none from the PCIe slot itself, relying completely on external power. If you go this route, it could help to undervolt your GPU as a precaution.
I really wouldn’t recommend this setup. SATA connectors aren’t meant for the large amount of power that GPUs draw. It’s probably better to stick with a known power source.
Could you explain more? Each SATA connector is rated for 54W, and that's what I'd be drawing from it. What makes it unsafe?
It's not just about the wattage rating; it's about the quality of the connector and how it's designed to handle high currents. Low-quality connections can overheat easily.
If you have the option, just get a reliable PSU that fits in your case. It’s safer and probably more cost-effective in the long run.
You should be alright if you keep an eye on power draws. The main concerns are indeed overheating issues if the connectors aren’t rated for the current. As long as your total draw is within spec, you should be fine, but definitely consider undervolting as extra caution.
Just keep in mind, the quality of your PSU plays a huge role. Lower gauge wires can pose risks too.
I'm not too sure what my PSU is exactly; it's an office PSU, and it came with just a 4-pin, a 24-pin, and a couple of SATA connectors. I did get a 24 to 6-pin converter for the other components. My dad connected everything, so I'll have to check the motherboard to see more about it.