For me it helped a GREAT deal on my GA-P35 DS3L
Here's some data from my q9550 and GA-P35 DS3L 8.5x 400 3.4ghz , ram 2x 800ddr , FSB overvolt +.2 Ram +.1v
Stock: 1958 ohms bios voltage: 1.31875v
idle: 1.28v
load: 1.232v
Mod1: 990 ohms bios voltage: 1.31875v
idle: 1.28v
load: 1.26v...