This store is a little elderly AMD Athlon 3800+ was upgraded. Since Windows XP expired and 1GB RAM for Windows 7 but is not enough, I now have in the computer 4 GB of RAM inside, which were also recognized immediately. 3 times Memory Test run over it, no errors. Now the old computer is running much faster as before - but with Windows 7 64 bit. For relatively little money so that my old office computer again made suitable for a few years, I am very satisfied.