I'm looking to upgrade the processor in my older Dell Inspiron E1705. The laptop is currently running an Intel T2400 @ 1.83GHZ. First, is this something that is even possible to do? Second, what processors are still for sale that would be a great upgrade?
Check the motherboard, look for what does it support. Then just go to eBay or a trusted site where you can buy used mobile CPUs and get one which is supported by the motherboard/chipset.
Also, check with Google. Try typing
Inspiron E1705 cpu upgrade and such. Someone may have done this already and got some info about what works and what does not.