Heating issue after installing new PSU in Dell XPS 8100

moonisahmed

Honorable
Nov 15, 2013
2
0
10,510
I have a Dell XPS 8100 2010 model. I just upgraded the graphics card to Asus GTX 650 Ti Boost and to go with it, upgraded the stock 350W PSU to 650W Cooler Master GX II. my issue is that during gaming, the case around the PSU becomes quite hot. i did proper cable management to keep everything clean for better air circulation but still no effect on the heating.
Not sure what's the issue.
Specs -
Dell 0T658R motherboard
Core i7 860 2.8 Ghz
6 GB DDR3 RAM

Additionally, is it possible to add more case fans given the motherboard and structure of the case?