Aliens Vs. Predator
“Aliens vs. Predator, also known by fans as Aliens vs. Predator 3 or AVP3 to distinguish it from earlier titles, is a 2010 video game developed by Rebellion Developments and published by Sega for the PC, PlayStation 3 and Xbox 360. It is a sequel to Aliens versus Predator 2, although it does not have any connection with that game’s plot. Instead it charts events on the planet BG-386, where a Weyland-Yutaniresearch team led by Karl Bishop Weyland has discovered aYautja Pyramid, and is simultaneously studying the Xenomorphs found there and hoping to unlock the advanced technology contained within. The Aliens soon escape, prompting a response from the United States Colonial Marine Corps, while the Predators also send three of their member to investigate.” From Avp.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