The OCZ DDR3 PC3-12800 Black Edition 4GB memory kit ran very well with our AMD 890GX motherboard bearing a triple-core AMD processor. While OCZ has a larger selection of memory designed for Intel's latest Core i5/i7 processors, the OCZ3BE1600C8LV4GK kit shows they can design a great offering for AMD hardware too. We had no problems running the DDR3-1600MHz with its 8-8-8 timings at 1.65V and then also dropping the frequency and tightening the timings as well. When overclocking this memory it was easy to hit DDR3-1720MHz and could have likely pushed these DDR3 PC3-12800 modules even further had we spent more time tweaking and used a different CPU/motherboard combination. While the memory kit supports AMD OverDrive profiles, there is currently no such Linux support, so that feature is irrelevant at this point.
We are happy with this OCZ DDR3 memory kit for AMD hardware as it works well, is backed by OCZ's reputable lifetime warranty, and retails for around $130 USD (at NewEgg), which is modest for a high-end 2 x 2GB DDR3 kit.