I tested these on a SVS13A1U9ES version of the VAIO. I am not very familiar with GPU overclocking, so correct me if I did anything wrong. Basically I maxed what I could using nvidia Inspector and: With 950 OC edition: P0 base clock +200 P8 GPU clock 405 --> 770 Mhz (!?) temperature: <= 73 With 835 OC edition: P0 base clock +405 P8 GPU clock 405 temperature: <= 74 --> 835 Mhz I don't know why I only get 770 Mhz with the 950 edition, but 835 is very sweet anyways, thanks for that! Other mods from Notebookreview seem only to give me opportunity to do +- 135 Mhz change on the GPU clock. Either I am doing something wrong or the vbios settings on my model are a bit different. Unfortunately I don't have time to dig into this ATM, but if you give me some pointers on docs on VBIOS and modding, I might be able to do some debugging in the future. Happy to provide you with any dumps you need, just let me know.