I have a abit kv7 mobo with a AMD Sempron 2300+ CPU I removed my KVR400X64C3A/512 ddr and replaced it with 2, 1gb ddr pc3200 400mhz cl3. Now the system seems to be running slower. This is my first attempt at working on my own computer so my knowledge is limited. But, this problem is a good chance for me to learn. Any suggestion? Is there something I should do in BIOS? Does anyone know of any links that might be useful?