I've been doing some research on the safe operating voltages for the RTX 4080, especially since there are concerns about potential melting issues related to the 12VHPWR connector. I've heard that voltage should not drop below 11.8V, but at idle, my GPU shows around 11.853V, and under a 300W load, it dips to 11.710V. It seems like many people report being over 12V at idle, which makes me wonder if my GPU is at risk. My power supply is an RM1200X Shift, and I'm using the included GPU cable. I just want to make sure I'm safe and that my 4080 isn't in any danger. Any advice?
1 Answer
Melting issues often happen when cables aren’t seated correctly, causing too much power to go through a single wire. Technically, 12V or 11.8V is fine for your GPU, so don't stress too much. You might want to look into getting a better cable, though. Some newer PSU models offer higher quality cables to handle the load better. Also, monitoring tools are available that can track voltage and amperage and automatically shut down if issues arise. Undervolting the GPU can help, too, by reducing the load overall. Just ensure that your cable is plugged in all the way on both the GPU and the PSU side!
That makes sense! I’ll check into those cables, especially since I'm planning a case swap soon. I get that the 4090 and 5090 are more of a concern, but I still want to be cautious with my 4080. It's good to hear yours has been running fine for a year. I guess the numbers can be misleading; I’ve seen some say 11.4V is okay, while others freak out at anything below 11.6V. Your explanation really clears things up.