Right, thanks for the advice everyone!
Ordered it, should be here in about 2 weeks.
27", 2560 x 1440
Quad-core 3.4 GHz Intel Core i7
4GB 1333MHz DDR3 SDRAM
250GB SSD
AMD Radeon HD 6970M with 1GB VRAM
Goodbye playing on low graphics and still getting terrible fps.