I can get this GTX 660TI 2GB for £222 http://www.ebuyer.com/394657-evga-gtx-660-ti-2048mb-gddr5-dual-dvi-hdmi-displayport-pci-e-graphics-02g-p4-3660-kr?utm_source=google&utm_medium=products
Or this GTX 660 TI SC 3GB for £246 http://www.scan.co.uk/products/3gb-evga-gtx-660-ti-superclockedplus-28nm-pcie-30-6008mhz-gddr5-gpu-980mhz-boost-1059mhz-cores-1344-
Is the extra 20 quid worth it? It seems it.
Or this GTX 660 TI SC 3GB for £246 http://www.scan.co.uk/products/3gb-evga-gtx-660-ti-superclockedplus-28nm-pcie-30-6008mhz-gddr5-gpu-980mhz-boost-1059mhz-cores-1344-
Is the extra 20 quid worth it? It seems it.