Wow thanks a lot guys, so much to check on. Only just got home from work and had a skim through the whole thread since I last posted and must say this threads advice and another I have elsewhere I am swaying towards dual 7970, banking the money saved and looking at next gen cards when they appear maybe.
Also someone who thought I was trolling a bit, I am not at all I am in the process of selling my house and moving, so will have a reasonable amount of spare cash available, and as I spend so much time on my PC figured why not blow some on a top notch PC, the one I have now was around £1200 when I built it and has lasted my a good 5-6 years and is only now starting to struggle, if I can repeat that with this one I see that as a good investment considering the amount of hours enjoyment it will give me.