sparkythewildcat

Bump. (I think this is allowed lol)

One last thing, I just got my spare 4-pin fan to remain running at 100% set on afterburner, though there was no audible difference to the speeds when set at 25% vs 100%. Furthermore, I just got a reading on cpuid hardware monitor. It's pegged at 448 rpm, although it did jump sporadically up to 3000+ RPM before settling down to 448 RPM. Weird, since it's a 1200 RPM max fan and definitely didnt spin nearly that fast. I'm thouroughly frustrated/stumped.

I'm going to bed now, but please let me know if you guys can get any insight on what's going on from my posts so far. Thank you so much for your help!

for the sake of clarity, I want to make sure that you know I'm talking about my spare 1200rpm PWM fan when I'm talking about my "spare 4-pin fan". Anyway, the gpu header will power my spare 4-pin fan until I unplug another fan from the second header. Once I do that, I have to unplug and replug the 4-pin to get it to start spinning again. Also, it seems to be unresponsive to the fan speed control in MSI afterburner, except if I set the fan speed to 100%, it will stop spinning. I'm very confused.

Ok, so when I had my 3-pin and that spare 4-pin plugged in, they both spun. when I unplugged the 3-pin, the 4-pin stopped spinning. I'm so confused

I mean, isnt the fact that my other 4-pin fan spins enough evidence to prove that the adapter is pinned correctly?

So, I plugged in my only other 4-pin fan. It actually started spinning. Curiously, the fans are MUCH louder when multiple fans are plugged into the adapter instead of a single fan. At this point, it seems that the only answer is that it's not pushing enough current, although that makes NO sense to me.

well, I plugged in my other 3-pin fans and opened CPUID hardware info. It's showing "0" for the reading. idk if I need to restart my PC, but yeah, as far as I can tell, it's not reading. You think the answer is to get a different adapter?

They were the same price and PWM, so why not? at least, that's before I found out that they just wouldn't work.

I'm not sure. I never really checked, since they weren't adjustable.

https://www.moddiy.com/products/5%2dPin-VGA-PWM-Mini-PH-Connector-to-Dual-PWM-4%2dPin-Fan-Cable-Splitter.html

yeah, one sec

well, one, idk how the current draw would be too much to even power one fan. I just don't see how the header can't provide .3 amps (and that's at MAX speed), so the average usage to get it to spin at all is probably only.1-.2 amps. And though I didnt know it had a 45% minimum speed, that would still be only like 1350 rpm, which is silent enough for my use.

I know the pinout is correct. I bought an adapter specifically for this gpu (it has a weird 5-pin adapter, supposedly so it could get tach signals from both fans), so I know it's good. I just don't get how it's not providing enough current. I've been reading up and apparently most gpus (and mobo) fan headers are rated for 1 amp, with many being able to surpass even that. Idk how it's not providing enough to power two .3 amp fans. Those are still .4amps below the limit and to make it worse, it's not even providing enough to power 1 of them, assuming that is the issue (which I don't think it is). Also, it worked with the 3 pin fans, so idk what else the 4th pin could be if not PWM, since the 12v, grnd, and tach pins were all clearly correct.

So, I bought a rajintek morpheus 2 a while back so I could tame the temps of my r9 290. long story short, I bought some noctua IPPC 2000rpm fans, thought they were pwm, but they werent. they ran full blast, and I wanted the option to lower temps. So, I decided to put in a return for them and get some PWM fans. I ended up buying some ippc 3000rpm pwm fans. They wouldn't spin when I plugged them into the adapter I was using for my gpu header, which did work for my old fans. However, when I plug them into my mobo header, they work fine. What's going on here? are they overdrawing power from the gpu header? These new fans are only .3A, but the old ones were rated at .1A. Also, I am using a splitter for my gpu that goes from micro 5-pin to two regular 4-pin adapters. I was using this to power my old 3-pin fans and it worked fine. I'm so confused. Please help.