Thanks for that I’ll give the sites a go.  My housemate is worried I’ll cause our network problems!

So ideally, according to the chart, I’d be best off buying a 3 or 4 card setup of 7970’s to start with.  But do these work for bitcoin and litecoins?

I’m concerned to buy specifically for bitcoin mining if the asci machines arrive and make it exponentially harder for my new rig to make anything.  I’d love to get just a few bitcoins for the sake of it and then move to lite or feather coins.