Corsair TwinX2048-4000PT PC4000 DDR500 Memory
 

"Officially, the Corsair TwinX1024-4000PT is designed to run mainly on highly overclocked systems and is rated for up to 250 MHz with 3-4-4-8 timings (at a voltage of 2.8V). If you are running with lower latencies, we can tell you that the TwinX2048-4000PT will only run as tight as 2.5-3-3-6. The 2GB TwinX2048-4000PT DDR500 RAM kit is rated to run at speeds of up to 250 MHz, who says you had to sacrifice speed for higher capacity? "
REVIEW URL: http://www.pcstats.com/artvnl.cfm?articleID=1907