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Does this P4 wire hack/trick actually work???

If the information is correct, the mod should work. I've done voltage mods on various socket 478 P4 and Celerons, and socket 370 Celerons galore. Works as advertised. An alternative is to map out the pins to the holes on the CPU socket, and connect the holes with thin wires bent into U shapes. Some people find it easier to just drop an upside-down U piece of wire into the proper holes in the socket than to try connecting two pins together with wire.
 
the wire mod works great. in my situation, i had a problem where the voltage right at start up wasn't enough to get the machine to boot because the board undervolts. my cpu runs at 1.5v rocksolid, so i ended up wire modding the cpu to 1.75 and then setting the bios back .15 volts. that gives me the higher voltage i need to boot, but then shifts the voltage back to about 1.5-1.55 after the boot sequence starts. so yes, the mod works great.
 
btw, make sure you use the voltage mod for the socket 423 and not the one for the socket 478. i shudder to think what might happen if you use the wrong one :disgust:
 
Try developer.intel.com and download the datasheets in PDF. Look for the pin numbers which deal with voltage, should match the same ones for socket 478 in pin name (VID0, VID1, etc.) and then just find out which pins they match on the pinout in the document.
 
It worked on my P4 🙂 It's a great help to get that extra voltage and was something I needed on my P4B266-C to do the memory speed trick in order to get a more desired divider.

But anyway, yep, it works 🙂 I prefer placing a U-shaped piece of very thin copper wire into the two holes on the socket.
 
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