ASROCK FM2A55M-VG3 User Manual page 8

CAUTION!
1. Whether 1866/1600MHz memory speed is supported depends
on the CPU you adopt. If you want to adopt DDR3 1866/1600
memory module on this motherboard, please refer to the mem-
ory support list on our website for the compatible memory mod-
ules.
ASRock website
2. Due to the operating system limitation, the actual memory size
may be less than 4GB for the reservation for system usage un-
®
der Windows 8 / 7 / Vista
bit CPU, there is no such limitation. You can use ASRock XFast
RAM to utilize the memory that
3. For the discrete GPUs which support Dual Graphics technology,
please refer to http://www.amd.com/us/products/technologies/
dual-graphics/Pages/dual-graphics.aspx#3 for details.
http://www.asrock.com
TM
. For Windows
Windows
8
®
64-bit OS with 64-
®
cannot use.