This has been going on for about 6 months when in game my PC restarts with no error's just memdump files. I had just replaced everything but the video card. So would that make it the video card I have the 670. Specs are in my sig. It doesn't happen all the time like it can go a few days before it happens. some times twice in a day or it can do it for 1-3 days then be fine for a week then restarts.

 
Did you try another PSU to rule that out?

This is a new PSU this started with my old build I upgraded everything to try and fix this problem but failed to do so and yes I had a thermal take 1200 grand and replaced it with the evga 750w

TheNerd
But my warranty I guess is out of date so dang

 
 
You checked with a guest RMA ?
 
I bought the 10 year extended warranty when I first registered my 670 FTW.  Now it only runs in my daily driver.
 
If your out of warranty, you could check the Temps and see if it might just need some new TIM