your motherboard supports pci-e 2.0 x16 which is good for all graphics cards. for 90 pounds (roughly 115 dollars us) you could probly get a amd 7750, or a gtx 650(non ti) or a gtx 550ti. which would be a big improvement over that gpu
Could you give me some links?
And also, I noticed they are 1gb, is that a big matter in performance?
£90 = $144 USD. For that price you can get a 7770 and cover shipping / taxes, a GTX 650 Ti for $150 USD or a 7850 1gb for $165 USD.