i3 550 to i7 870

Rafastang

Honorable
Aug 11, 2012
86
0
10,660
So i've seen this second hand i7 870 for 80€ , around 105$ , and wondering if it is worth buying at this time of the year? My i3 is bottlenecking the hell of out of games, and it takes ages in render.

These are the full specs of my PC:

Gigabyte HD 7770 1GB GDDR5
8GB RAM 1333MHZ DDR3
i3 550 3.20 @ dual core
Motherboard LGA 1156 MSI 2A9C
PSU Tacens Radis VI 550W

Also, would i need to change my PSU ?