Hello yesterday I bought two sticks of 1 gb pc3200/400 memory. In my system was 4x256MB PC3200/400 memory. Now with the new 1 GB sticks and two 256 MB sticks the frequency is only 320 mhz. So I took out the two 256 MB sticks and the memoryfrequency was 400 mhz again. Obviously the new sticks have a different CAS latency so the frequency is lowered to 320 mhz.... In my BIOS (motherboard Asus P4P800E-Deluxe) I can manually set the frequency to 400 mhz, but will this not damage the two 256 MB sticks? I am running my PC now with these settings, and at boot-up is said that the memory runs at 400 mhz. What's the noticable speed difference anyway (using pc mainly for FS2004)?