4890:
http://www.scan.co.uk/Products/1GB-...DR5-GPU-1000MHz-800-Cores-2x-DL-DVI-HDMI-HDCP
4870:
http://www.scan.co.uk/Products/1GB-...MHz-GDDR5-GPU-750MHz-DL-DVI-I-HDMI-D-Sub-HDCP
896Mb gtx 275:
http://www.scan.co.uk/Products/896MB-EVGA-GeForce-GTX-275-Core-240-55nm-SSC-SuperSuperclocked
BANG4BUCK IMO is the 4890 mate
http://www.scan.co.uk/Products/1GB-...DR5-GPU-1000MHz-800-Cores-2x-DL-DVI-HDMI-HDCP
4870:
http://www.scan.co.uk/Products/1GB-...MHz-GDDR5-GPU-750MHz-DL-DVI-I-HDMI-D-Sub-HDCP
896Mb gtx 275:
http://www.scan.co.uk/Products/896MB-EVGA-GeForce-GTX-275-Core-240-55nm-SSC-SuperSuperclocked
BANG4BUCK IMO is the 4890 mate
