Here's the idea - a potentometer connected to ANY 5v source at one end and VCC on the dimm banks at the other. As you turn a potentometer attached to a small circuit, the voltage counter shows your voltage, then you hit a switch to set your dimm voltage. The device remembers dimm voltage between boots. It will be universal because all boards use VCC, can be placed in the front of a case to be used on the fly, and best of all is completely bios and OS independant. Anybody got any ideas how we can do this? Edit: Other side notes: a circuit to kneecap voltage at a certain level (say 5v) would be helpful, and the circuit should allow from 0-5V adjustability.
I think some of the more "extreme" overclockers do this already. I saw a forum post, on another site, of a person building a voltage feeder for his graphics card - he had two pots, one for the GPU and one for the RAM. For the switch, building something to keep track of it digitally will be arduous, instead, a DIP switch can be put in place to allow different settings of the voltages. One for BIOS control, another for a voltage setting that is not dictated by the BIOS and so on.
would work, but there would have to be a set of resistors onboard for each dip that is switched... as to the idea, this is based on the universal 3.3V mod already. It just takes it a step further.
sort of but no. this involves tricking the controller. The mod i'm talking about involves tricking the ram itself.
the best way to do this is w/o a analouge pot, but ratehr with a rotory optical encoder and a PIC w/A-D, or better yet, with a digital POT chip. you could easly drive the led voltage display, and there are rotory encoders with built-in buttons so you could set and adust with just one control
