Any system with:
GT 650M
GT 660M
HD 7730M
Inspiron 15R - 7520
Inspiron 15R - 7520
Processor: Intel® Core™ i7-3632QM (2.2GHz, 6M cache)
Windows® 8
8 GB Dual Channel DDR3 1600MHz Memory (2 DIMMs)
1 TB SATA Hard Drive (5400 RPM)
8X DVD+/-RW Drive
Display: 15.6in Full High Definition (1080p) WLED with AntiGlare
Graphics: 2 GB AMD Radeon HD 7730M Card
Back Up Media Not Included
Windows® 8 64bit (Englilsh)
Wireless : Intel 2230 Wireless Card + BT
LCD Back Cover : Aluminium
LCD Back Cover : Aluminium
Battery : Primary 6 Cell 48W/HR
Internal Qwerty Keyboard
£535.25(Inc Vat and Del)
Or with the faster GT 650M
Inspiron 17R - 7720
Inspiron 17R - 7720
Processor: Intel® Core™ i7-3630QM (2.40GHz, 6MB cache)
Windows® 8 Pro
6 GB DDR3 Dual Channel 1600MHz (2 DIMMs)
1 TB SATA Hard Drive (5400 RPM)
8X DVD+/-RW Drive
Display : 17.3 Inch Full High Definition (1080p) LED Display with Anti-Glare
Graphics: 2 GB Nvidia GeForce GT 650M 130W
Back Up Media Not Included
Windows 8 Professional (64 Bit OS)
Wireless : Intel 2230 Wireless Card + BT
LCD Back Cover : Aluminium
Battery : Primary 6 Cell 48W/HR
Internal Qwerty Keyboard
Price: £455.53
Price excl. VAT and delivery
From Dell outlet store pretty well speced and cheap

and should be more than enough.