the cards are on amazon the 7850 is £190 and the 7870 is £230. both are sapphire, both are oc versions, is the increased performance on the 7870 worth the extra £40?
i know that the 7850 can be oc'd to 7870 performance but i would pref to run stock
On Aria, you can get a reference 7870 for £200 atm. I'd probably still go for that if you arent intending to OC, and it will still OC pretty well if you need it to