I have an XPS 410 with a 375w PS. And I have a 7950gx2 and an e6400, and on games like Company of Heroes and BF2 they crash to desktop and or restart my computer. Now on the nvidia website it says I need a 400w PS to run the 7950gx2 but dell will not give me a 400w PS all they will do is switch out the 375w for another 375w made from another company! I even talked to a manager, what do I have to do to get them to give me a 400w PS!!!