MSI GTX 770 Causing Freezes ingame, Driver crashing (Maybe dead GPU?)

Ok so about 4 months ago i bought a pc from a website which included an MSI GeForce GTX 770 OC 2048 MB, not the twin frozr one this one: http://www.amazon.co.uk/MSI-GeForce-...ds=gtx+770+msi

And since last week iv noticed random freezes during games, not full freezes but like mini ones for like a second, at first i thought it could be a damaged SSD, took it out and installed to 1TB HDD, problem still occured, then i thought maybe it was ram, i bought new ram and the problem is now still occuring, so i thought maybe it is my graphics card as recently there has been alot of GPU driver crashes which i thought was strange, iv tried rolling back to other drivers and it still has a problem. iv ran a test on Heaven Benchmark to check my GPU, and im not sure if it is working correctly http://prntscr.com/5b7deq

By looking at that can you tell whether the GPU is faulty/dead or not, and also if not any more suggestions of what i could try?