Have so my PC (DeutschlandPC of 2004; Scaleo 600) upgraded from 1GB to 2GB. Old memories (2 * 512MB Infineon) out and the new (Corsair VS2GBKIT400C3) pure. Now the PC has enough memory again and has become even a little faster! The conversion may have taken 15 minutes and everything was working properly. The configuration: AMD Athlon 64 3200+, Fujitsu-Siemens D1607 motherboard, BIOS Rev. 4:06 1.11.1607Corsair RAM 2048MB PC400 DDR Ram CL3 ValueSelect kit