Not trying to hijack your thread but the latest drivers do not appear to even support the 6650m in any capacity and it's really starting to push me away from AMD products after so many years of being a die hard amd user.
Lenovo z575 laptop
AMD A6-3420M quad core llano APU with 6520G 1.5ghz base 2.4ghz turbo (overclocked to 2.6ghz)
8gigs of ddr3 1333 low latency ram dual channel
AMD 6650m video card (dedicated supposedly)
750GB 7200rpm sata3 harddrive
Windows 7 Ultimate 64-bit
So here is my story of trying to get the latest drivers installed on this system and wasting about 8 hours of my saturday fighting amd and lenovo, so the latest drivers from Lenovo for this laptop are dated December 2011 which is horribly outdated and doesn't include any recent game optimizations or frame pacing fixes (since dual graphics doesn't even work according to tomshardware... i guess that's a moot point) http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS025985
So the drivers on the lenovo site seem to work but the performance isn't that great given how outdated the drivers are so i set out on a quest to get the latest drivers installed and here were my results
13_1 mobility drives -> no inf file found for driver (6650m) -> 6520g gets updated to latest but 6650m doesn't causing black screens and system lock ups on reboot
Latest beta driver -> no inf file found for driver (6650m) -> 6520g gets updated but CCC won't launch and system hangs randomly
The latest drivers i could get to work are 12_10 which got me this far
12_10 -> graphic drivers updated fine but 6650m now shows as 6600/6700 series and not as a 6650m leading me to beleive these drivers only kinda work for the 6650m at least well enough not to crash on me -> 6520g gets updated -> had to do registry trick to disable ulps before rebooting after install -> CCC wouldn't launch -> uninstall CCC -> reinstall CCC -> reboot -> system frozeon -> boot into safe mode -> reenable ulps registry keys -> reboot -> system working, no freezes, bf3 running on a mix of medium @ about 40fps which makes me wonder if the 6650m is doing anything at all.
Also running 12_10 if I unplug the laptop during a 3d application the entire system will freeze forcing me to hold the power button until the computer shuts down and reboot, this entire experience has been very frustrating and where as I used to recommend people buy AMD APU/Dual graphics laptops as a good cheap gaming experience I have now seriously started to question that logic seeing as the 6520g gets the latest drivers which include a 5% bf4 improvement for the latest beta drivers and the 6650m isn't supported past 12_10 which is over a year old and doesn't include any of these performance improvements that I would really like to have on this system seeing as the hardware is there, the driver appears to support the APU gpu but for the life of me I can't get the 6650m supported which just puts a bad taste in my mouth since dual graphics doesn't work at all and if the 6650m isn't supported then im stuck running old graphic drivers that are horribly outdated and lenovo doesn't appear to have any desire of releasing another driver so I look to AMD for drivers yet those don't work either because somewhere down the road someone forgot about the 6650m