TwinMOS Twister PC2-6400
TwinMOS is no stranger to us; in fact we tested some of their first Twister modules on our site some time ago and found them to be somewhat good, though not really worth the extra money. We have today their Twister DDR-2 800MHz modules in our labs.
TwinMOS places a sticker on the back side of its Twister modules with some basic info. These modules are rated for 800MHz DDR operation with ratings of 4-4-4-8-2T.
TwinMOS only warrants the use of 1.8v so going above this is simply not going to be good for those who want to keep their warranty. We managed to get 2.2v into the RAM for a maximum speed of 995MHz DDR (497.5MHz).