For this, has a good technique using staples. I also did some searching on better ways to remove the female contacts from the connectors. Looking for a cleaner solution, I decided to make a jumper wire to go between the sense pin and the adjacent ground. I powered up the computer, and the video card worked perfectly. :-) I stripped the end of the wire (red in the first photo), wrapping the bare part of the wire around the screw that holds the card bracket in the case. Not pretty, but I'm no maker, I'm a hacker. To get one of the female contacts out of the ATX connector, I used a hack saw to cut apart the ATX connector. ![]() The PCIe power connectors use the same kind of pins as ATX power connectors, and I had an old ATX power connector I had cut from a dead PSU. I didn't want the modification to be permanent, so soldering a wire to the sense pin was out. The way to do that is ground the 2nd sense pin (green in diagram above). My 6-pin 16AWG PCIe cable would have voltage drop of only 40mV at 75W, so I just needed to figure out a way to trick the GPU card into thinking I had an 8-pin connector plugged in. Since the 8-pin connector has three 12V pins, it can provide 50% more power. ![]() With just two 12V wires, a crap 18" 20AWG PCIe power cable would have a drop of over 0.1V at 75W. Apparently some 6-pin PCIe cables only have 2 12V wires, 2 ground, and a grounded sense wire (blue in the diagram above).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |