BENETNATH

Hi everybody, i'm a fresh buyer of a Dell M6600 with a M8900 card in it. It was a good price in a forum, but my main intend is no pro-oriented. As i will use it for some gaming, i am considering to flahs it to a 6970M with a dell vbios. i've gathered the different tools for flashing, but i need to find a 6970M vbios for dell card. I've found a website listing different ones : Video Bios Collection | techPowerUp i'm not sure which one i should take. any advice ? also, whick tool is better to make the save gpu-z or atiflash ?) in addition, what is your POV on that, will i really bring a boost ? i'm a bit concerned as the laptop is still under warranty, and if i need to use it, i'll need to flash it back. thanks for any help and comments