![gpu 4 pin fan pinout gpu 4 pin fan pinout](https://i.ebayimg.com/images/g/MdcAAOSwAPVZIWYG/s-l300.jpg)
#GPU 4 PIN FAN PINOUT UPDATE#
The script was able to parse the BMC firmware update for the PE 830, so I went ahead and ordered a new fan. I downloaded that guy’s Python script and ran it on my PE 830. TLDR the thresholds in used by the BMC can only be changed by hacking the BMC firmware update package. Of course, because this is the Internet and I’m not the only hacker who likes to play with hardware, someone else had already solved this problem.
![gpu 4 pin fan pinout gpu 4 pin fan pinout](https://ae01.alicdn.com/kf/HTB1bQ.uMVXXXXafXVXXq6xXFXXXl/10pcs-lot-PC-Cooler-Cooling-Fan-Standard-4pin-Female-to-GPU-Video-Card-Mini-4pin-Male.jpg)
Unfortunately, I also found that the slower fans often trigger the “Lower Critical Threshold” (they spin too slow), causing the BMC to spin them up, which gets me back to the noise problem I had in the first place. I determined after some Googling that most people solve the problem by replacing the system fans with slower, quieter, models. My first thought was that I might be able to control the fan speed, but fan speed is firmly under the control of the BMC (Baseboard Management Controller) I can’t control it from software. The SC 430 is reasonably quiet (Dell based it on their Precision platform), but the other two, the 830 and 840, are just loud enough to be annoying. Dell doesn’t go to the same trouble when they design their servers. I’m used to desktop machines they’re designed to run quietly enough not to annoy someone trying to work in the same room. One thing I didn’t think about before I got them was how much noise they might make. A couple of weeks ago, I acquired three old Dell servers to play with: a PowerEdge 840, PowerEdge 830, and a PowerEdge SC 430.