In order to update your processor you need to know if your motherboard/ main board is compatible with the processor or not. If it's compatible, then make sure you need to update the BIOS of your mother board before installing the new processor. 4 GB of RAM is good enough for Windows 7 if you are using 32 bit operating system. 32 bit operating system would only recognize 4Gb of RAM, if you wanna go more than 4Gb then you need to get 64 bit OS.

RCU does sometimes have uploading problem even loading the page problem. Let me know if you need any help!

Mody