Dont know what is a good one, which socket type I have.
Any help is appreciated.
The Phenom II platform has already been phased out, your processor might be seated on the AM2+/AM3/AM3+ motherboard, which are also come to the end of their best time. So I would not suggest you to make any upgrade, but refresh your whole system if possible.
Wait a few more weeks when AMD releases Ryzen and Socket AM4. It's going to carry a 60% IPC improvement over current processors there's no reason to buy one.
Ryzen is AM4 so you will need a new motherboard, CPU and memory to upgrade
Not sure if a DDR3 version will exist like Intel Skylake does?