I had been running two sticks of Kingston PC2700 512M ddr on the subject board running at 166/333. I took out one stick and now am able to run at 185/370. With DDR2 around the corner, I hestitate to buy another pair of 512M PC3200 DDR to run in dual channels mode. Should I use 1G existing memory to run in single channel mode or two 256M PC3200 to run in dual channels mode so I can get the best performance? Not sure if the 2x512M sticks can run in single channel mode overclocked however.