4gb2 AMD A6-6400K APU testing with a ASUS A55M-E and ASUS AMD Radeon HD 8470D 768MB on Ubuntu 14.04 via the Phoronix Test Suite. 2x4gb: Processor: AMD A6-6400K APU @ 3.90GHz (2 Cores), Motherboard: ASUS A55M-E, Chipset: AMD Family 15h, Memory: 3584MB, Disk: 500GB TOSHIBA DT01ACA0, Graphics: ASUS AMD Radeon HD 8470D 768MB, Audio: Realtek ALC887-VD, Monitor: E1940, Network: Realtek RTL8111/8168/8411 OS: Ubuntu 14.04, Kernel: 3.13.0-24-generic (x86_64), Desktop: Unity 7.2.0, Display Server: X Server 1.15.1, Display Driver: radeon 7.3.0, OpenGL: 3.3 Mesa 10.1.3 Gallium 0.4, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 1360x768 RAMspeed SMP 3.5.0 Integer Add MB/s > Higher Is Better 2x4gb . 7504.91 |============================================================== RAMspeed SMP 3.5.0 Integer Copy MB/s > Higher Is Better 2x4gb . 8774.17 |============================================================== RAMspeed SMP 3.5.0 Integer Scale MB/s > Higher Is Better 2x4gb . 8613.19 |============================================================== RAMspeed SMP 3.5.0 Floating-Point Add MB/s > Higher Is Better 2x4gb . 7846.12 |============================================================== Stream 2013-01-17 Add MB/s > Higher Is Better 2x4gb . 9594.92 |============================================================== Stream 2013-01-17 Copy MB/s > Higher Is Better 2x4gb . 9673.75 |============================================================== Stream 2013-01-17 Scale MB/s > Higher Is Better 2x4gb . 9303.52 |============================================================== CacheBench Read Cache MB/s > Higher Is Better 2x4gb . 1699.18 |============================================================== CacheBench Write Cache MB/s > Higher Is Better 2x4gb . 9955.58 |==============================================================