I have a Dell M1530 and I'd like to reduce the GPU voltages to the minimum necessary. The GPU is an NVIDIA GeForce 8600M GT which is a non-mxm integrated GPU. I've software modded the CPU voltages down using RMClock, but nothing I can find allows the same control over GPU voltages, and a BIOS mod would be effective whilst the computer boots. I am restricted to BIOS A09 and earlier versions otherwise my battery doesn't charge. I'm not sure how you can safely find lower stable GPU voltages for an integrated BIOS without software to softmod. Much of the talk about BIOS modding refers to SLIC issues, I'm content with Vista, but would update SLIC if that were necessary to change GPU voltages. BIOS filename ends .rom, so I assume it's Dell Phoenix. Is this possible or is the Dell BIOS unintelligible? Has someone written guide to integrated BIOS undervolting mods? Am I going to run into problems with encrytion and BIOS passwords? Help greatly appreciated.
I'm trying to establish if a Dell BIOS mod can UNDERVOLT the GPU on a non-MXM laptop, in my case the M1530 with NVIDIA GeForce 8600M GT. Credit to Apokrif, AndyP, Busykid508 for deciphering the Dell BIOS in the first place. Please can someone explain what can now be altered. Is it that only SLIC tables can be modded, or can CPU and GPU parameters (like voltage) be altered too? If I'm barking up the wrong tree, this site deals exclusively with SLIC mods, I'm posting in the wrong thread or committing some other faux pas let me know because I'm a bit lost.