"The ultra high clock speeds supported by these modules make them an ideal choice for extreme overclockers seeking the ultimate in performance. According to Corsair VP of Applications Engineering John Beekley, "we've tested these modules in our labs on a number of 875P, 865PE and 939-pin Athlon T 64 FX based motherboards with extremely impressive results. This is the first time we've been able to run memory at 550 MHz on both Intel and AMD platforms. and at CAS 2.5!" Corsair R&D engineers have validated these modules on both Intel and AMD based platforms, but Corsair's production test lines for these parts employ the Asus P4C800-E motherboard. "Moreover, we've driven our manufacturing cost down dramatically on this module compared to our earlier XMS4400 product, which will translate into surprisingly affordable street prices", Mr. Beekley added."