My CPU is indeed Extreme Edition. I use the CPU-Z utility and the results published here: http://valid.canardpc.com/show_oc.php?id=1355609 Drivers: 1. Intel INF Update Utility 9.1.1.1025 22-12-2009 for 945GC express chipset. Same as previous install of Windows. 2. NVIDIA GeForce,ION Driver Release 257.21 WHQL 2010.06.15 Windows XP for NVIDIA 9400 PCI-E graphic card. In previous install was 196.x 3. Realtek HD Audio Codecs R2.49 11-6-2010 for PCI-E onboard audio. In previous install was an older version. I don't remember the version. 4. Realtek WinXP 32,64 and Win2K Auto Installation Program (SID 1412117) 5.760 22-6-2010 for PCI-E onboard ethernet controler. In previous install was an older version. I don't remember the version. 5. DirectX End-User Runtimes (June 2010). In previous install was an older version The XP pro Greek with SP3 is original and all the updates from microsoft is installed. My intention is to install 2x2GB DDR2 RAM just in case is needed by BIOS to address memory space for the PCI-E devices. Especially for graphic card with 1GB memory on card. Any ideas about that?