The replacement GPU fan pins seem unusual.
The replacement GPU fan pins seem unusual.
You're asking if you can add new fans directly to your GPU and which connections need to remain unconnected.
When examining the 5-pin connector, it should display red. It's a good idea to use jumper wires first, just in case. Keep in mind you won't be able to see the actual fan speed reading for the second fan, but it should align with the first one.
Reviewing my GPU diagrams, I'm missing the ones for the GK104. The only boards I own are 208, GT 720, and GT 730. It's hard to verify which connections are correct.
You possess color codes for each pin on the vintage fans. From left to right, the header corresponds to green, black, yellow, red, and blue. If you have an old wire, you can extract sections from it. Do you have some unused Ethernet cable? Cutting a segment off it results in eight wires. These will remain thin enough for short-term use. Speed control remains intact. Each fan features a blue and green wire. A method exists to obtain a combined speed reading for both fans using the appropriate connector. Refer to this link: https://www.moddiy.com/products/Graphics...2.0mm.html Or use the existing connector. In my view, this matches the pin layout. It’s a 5-pin setup: green for fan 1 tachometer (indicating speed), black for ground, yellow for power, red for fan 2 tachometer, and blue for PWM signal controlling fan speed. With four pins, you retain speed management for both fans, though they’ll spin at identical speeds. The software will display them as separate percentages—fan 1 at whatever percentage it’s running and fan 2 at zero.
I didn’t grasp much, but cutting the cables seems like a solid and secure choice. What concerns you? Could anything fail? I’m worried about damaging the fans.
The safest approach would be to desolder the wires. Cutting them would make testing with temporary wires more difficult. If you prefer cutting and splicing, go ahead. Since you’re unsure, I aimed to ensure everything is as straightforward as we expect regarding wire connections.
I removed the old ones, but the new fans have a cap on top of them. When I tried to take off that cap from the old ones, it was stuck or glued, so it just came apart. Now I can only work with the new ones. I wanted to follow your instructions but didn’t fully grasp what to do. I’m planning to cut them myself and hope everything stays intact.
I'm discussing how to use leftover wire pieces to create a temporary link between the old fan connector and the new one. Since the old fan is already disassembled, it's simpler. Insert wires into the new connector so you can hold it against the old fan where they connect to the hub. Then reinsert the old fan connector into the GPU and power up the computer. Make sure all your wires match the correct solder points. Your fans should start spinning. If they do, it means the setup works easily.
Most PWM Y splitters display RPM for the fan linked to the initial cable. It's unclear why this differs from other setups.