I have a toshiba l25-s1196(with a 1.7 pentium m I put in) laptop with 768mb of ddr2 533. the northbridge according to cpu z is rs400 rc400 rc410 and the southbridge is sb 400. it has integrated radeon xpress 200m graphics with 128mb of ram alloted to it. I used clockgen with the ics 951416 pll and have so far gotten it to 2ghz or 154 bus speed with a 6-13 multi. It has room to go so I think atleast 2.2 maybe even 2.4. I have overclocked the integrated graphics to 340 mhz from 300mhz. For the video I used atitool. http://www.xtremesystems.org/ has some good info on overclocking laptops along withtecharp