It's been a late night, I think I came to the bottom of it though.
As I suspected Krooton probabaly wouldn't honour a return, so I decided to take the heatsink off the GPU.
To my suprise, that was virtually next to no thermal paste on the GPU.
Anyway, I applied new thermal paste and got as much of the little specs of dust from the heatsink as I could.
Loaded back up, temps were LOADS better. I created a proper fan profile in Afterburner which has helped a great deal to.
Before, I couldn't run Furmark for longer than 2 mins without the temps going to 90c. Now I just completed the full burn in test (15 mins), temps were still high but they didn't peak anymore than 86c. ) This was with 775/1125 OC To.
Running Tribes for a fair bit, 99% GPU Usage, 67/68c max.
Fan profile (You guys might think it looks dodgy, but it works well. Any tips for improvement on it though?)
Finally glad to have it all sorted. I'm hoping it stays fine as I would have been royally screwed without a graphics card, last pennies went on the cost of it!
I am still concerned as to what the white stuff is on the back of the card though... So if anyone has any ideas, please let me know.
So would you guys agree these temps are much safer to run at now?
Cheers