How much could i over clock a g force 4 mx 440

i just wanna know how much i can overclock a g force 4 mx 440 whoever has one please could u tell me how far u have over clocked it thanks

The Thermaltake Crystal Orb is the best choice to replace the stock GeForce4 MX 440 heatsink as it seems to post some of the best scores outside of water cooling. Its low price and high availability don't hurt either, and with a card as inexpensive as the GeForce4 MX, we don't want to go too hog wild with the hardware.