World of warcraft has purposely kept their graphics requirements pretty low almost any $800 laptop will run the game on medium-high fine. My recommendations would be for an asus or a vaio laptop although the sony's are a little pricey. I've had both before and they served me well for gaming about 3~ years a piece. One last piece of advice would to be sure it has dedicated graphics, although it's not needed my cousin plays wow on a dell with integrated graphics and can run wow on medium fine.
Operating System Windows® XP/Windows Vista®/Windows® 7/Windows® 8 (Updated with the latest Service Packs) Windows® 7/ Windows® 8 64-bit with latest service pack Processor Intel® Pentium® D or AMD Athlon™ 64 X2 Intel® Core 2 Duo 2.2 GHz,
AMD Athlon™ 64 X2 2.6GHz or better Video NVIDIA® GeForce® 6800 or
ATI™ Radeon™ X1600 Pro (256 MB) NVIDIA GeForce 8800 GT,
ATI™ Radeon HD 4830 (512 MB) or better Memory 2 GB RAM (1 GB Windows® XP) 4 GB RAM Storage
25 GB available hard drive space
Internet
Broadband internet connection
Media
None for the recommended digital installation
Input Keyboard and mouse required. Other input devices are not supported. Multi-button mouse with scroll wheel Resolution
1024 x 768 minimum display resolution
above are the system requirements as you can see the minimum requirement is a dual core processor and a graphics card from 2004 so pretty lax. I'd look at what else you'd want to be doing on the laptop before you purchase it specifically for WoW.
Edited by Muffins?, 27 January 2014 - 06:40 AM.