Techniz.co.uk posted a review on the Patriot Memory 1GB DC DDR2 PC6400.

The Patriot's DDR2 PC6400 memory modules are very overclockable RAM. Furthermore, it comes with a premium aluminum heat spreader. This pair of DDR2 PC6400 is able to run at 800MHz with the timing of 3-4-4-8 even at default CPU speed. As for the overclocking performance, with the slightly changed the timing and increase the memory voltage, the RAM was able to hit 458MHz which is equal to DDR 916 (916MHz). This is was an excellent result.

Patriot Memory 1GB DC DDR2 PC6400 Review