Hitman Absolution
“Hitman: Absolution is the fifth title in the Hitman series by producer, IO Interactive, published by Square Enix and co-published by Eidos. The game was released for thePlayStation 3, Xbox 360 and Microsoft Windows on November 20, 2012. Hitman: Absolution runs on IO Interactive’s proprietary Glacier 2 game engine, combining classic Hitman game mechanics with new mechanics.” From hitman.wikia.com
at £125, it takes it into 7850 1gb territory, I concur with your conclusion, its certainly overpriced, and limited by that 128 bit bus width, for the same money you could get the 256 bit 7850 1gb, the memory throughput is so much better, and will allow the VRAM to be overclocked, SCAN has an MSI 7850 1gb for just £123.34, making this 2gb 7790 variant redundant.
http://www.scan.co.uk/products/1gb-msi-radeon-hd-7850-4800mhz-gddr5-28nm-gpu-860mhz-1024-cores-hdmi-2x-mdp-dl-dvi-i