ok so maybe its the motherboard and not the chip
what is the best socket 775 motherboard for OC?
i googled that and i get p35 based boards but i do not see any for sale
infact all the boards i see at newegg and tiger direct are all g41 or g31
I have a couple of C2D's (E6500 and E7500, both 2.93 GHz) with 266 MHz FSB's. One of my G41's will run at 352 GHz. That is 3.87 GHz. But even if your board will not run much past the stock 333 MHz, that is still 3.66 GHz.
You can also use one of the E3400's. Those have a 200 MHz FSB, so you will be limited by the CPU core speed and they are less than $50 from newegg.
My favorite of what is available right now would be the E6600 (3.06 GHz); about $70. That would give you a minimum overclock of 3.8 GHz.