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The BIOS Setup of the ASUS P5W DH Deluxe offers limited control over secondary memory timings, which affects an attempt to overclock DDR2 SDRAM above 1GHz. In other words, not all modules are capable of revealing their full potential on this mainboard when overclocked to frequencies of 1.0 to 1.1GHz. Users of this mainboard recommend sticking to the automatically assigned values for the memory subsystem settings, but we couldn't follow that advice in our overclocking tests. The other mainboard, ASUS P5B Deluxe, offers much more memory-related settings in its BIOS Setup, but is overall less stable than the ASUS P5W DH Deluxe when you choose aggressive memory timings.
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