Graphics Card
AMD Radeon HD 7640G+7450M Dual Graphics

AMD Catalyst Driver Version, and Driver History
13-1_mobility_vista_win7_win8_64_dd_ccc_whql

Operating System

windows 7 sp1 64bit

Issue Details
Hello!I come from China, I now use the Lenovo Z485 notebook products.My question now is: the run valve dota2 game can not enable AMD CrossFireX dual-graphics Crossfire function.I hope you can help me solve, thank you!My E-mail address is li20030207@qq.com

Motherboard or System Make & Model
lenovo IdeaPad Z485A-AEI

Power Supply
notebook

Display Device(s) and Connection(s) Used
I don't know.

Applications and Games
Dota2 of valve

CPU Details
AMD-4500M

Motherboard BIOS Version
lenovo

System Memory Type & Amount
4G DDR3 1600*2

Additional Hardware

NO

Additional Details
NO