I have the same board with kingston 1066. All I did is set the options as usual and it worked fine upon first boot! There is a motherboard option for DDR2 1066, since its supported. (Is it the processor that now has ddr2 1066 native support? Maybe its my Phenom that lets me do it.) I dunno if the older processors have that mem controller. What type of processor do ya have? (Set the voltage, then the timings manually, then select the speed when you place the options on manual.) You really should have no problems attaining stock speeds outa the ram. As far as OCing up to 1066, dunno!
here is an excerpt!
CPU, Chipset and Graphics Features
Supports AMD® Socket AM2+ Phenom™ FX / Phenom X4 / Phenom X2 / Athlon™ X2 / Sempron™
This motherboard supports AMD AMD® Socket AM2+ multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR2 1066 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0 based system bus.
Supports AMD Socket AM2 Athlon 64 X2 / Athlon 64 FX / Athlon 64/ Sempron
This motherboard supports AMD® Socket AM2 single-core Athlon™ 64 / Sempron™ and dual-core Athlon™ 64 X2 / Athlon™ 64 FX processors with 2MB / 1MB / 512KB L2 cache based on 64-bit architecture. It features 2000 / 1600 MT/s HyperTransport™-based system bus, dual-channel un-buffered DDR2 800 memory support, and AMD® Cool ‘n’ Quiet™ Technology.
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