I have a Toshiba Satellite L755-s5153 (what a great name), which has an intel B960 CPU. The motherboard has a model name/number of A000080130 and the chipset is intel's HM65 express chipset (nothing about it is "express" but whatever).
There's a forum post by "Amaturemo destW7" on tom'sHARDWARE. He had the same exact same laptop, CPU, etc. and managed to upgrade to an i7 2670QM. I'm not sure if he had to update the BIOS though - not a problem if he did.
My questions, are
1. Would I be able to go with the i7 3615QE instead? Toshiba has basically no customer support, and intel's is closed right now. Intel's own website claims that this CPU is compatible with the HM65 chipset
2. Regardless of what CPU I get, is it safe to buy used? I've never purchased used hardware before, so I'm worried that I'll buy one and it'll be a bomb or have something attached to it that'll give someone all of my information, money, etc. (not paranoid in anyway).
*The i7 2670QM seems to be the best and simplest option, so would anyone happen to be willing to sell one or know a good seller who could?