Attention!
Everyone who says these DELLs are slow!
1. Buy an SSD
2. Install correct drivers in the correct sequence!
1. Intel chipset driver
2. Intel HD grapichs driver from DELL's website (like 9.18.10.3234, A00)
3. AMD driver from my Dropbox
https://www.dropbox.com/s/693yasm4halsu2w/13-12_Mobility_Win7_Win8_64_DD_CCC_WHQL_intel_SG_Fix.rar You have to install this driver in Disable Driver Signature Enforcement mode!!!!!
4. Use ThrottleStop program, allow your processor using more TDP. Google it.
Tada! Have fun with your super fast laptop able to play Battlefield on High (8850m~30fps, 8870~35fps)