Is emachines E732z upgradeable to i5 processor?
Yes.
The CPU Socket G1 / Socket rPGA988A on the E732z allows you to upgrade.
I have an I7 640m on mine.
The installation process is fairly simple, and the processor was boxed as new from China for £35.
Note that you need integrated CPU graphics for the E732z.
The e732g has integrated graphics, so you could go higher with CPU upgrade.
The Ram in mine is 8gb, and SSD drive too.
Fine for my needs.