Members, Here is a brief summary of my system: Asus A7N8X-X Rev 2 (runs NVidia nForce2) AMD Athlon 2600+ Model 8 Asus 4x AGP Video (128MB) PC2100 1GB and 512MB Installed All of the drivers for all components are the latest from NVidia. During normal operation, there are no issues. However, when playing any type of graphic intensive game, the system will BSOD or lock. This happens on games from Boggle to Formula One. Currently the BIOS FSB is set to 133MHz with a 8x/16x multiplier (as per AMD's guides) to get the 2133MHz for the processor. If, however, I use the Nvidia nTune application, slow the FSB to 220Mhz, the system will run without any issues. My questions are thus: 1. Does the requirement of having to slow the FSB to 220MHz indicate a issue with this board and PC2100? 2. Is this problem indicative of an AGP 4x VGA and not related to RAM? 3. Is my problem related to both the PC2100 and the 4x AGP? In reading here on the Techspot boards (which are outstanding btw), I found several threads related to this motherboard and various issues but none conclusively matched what issue I'm experiencing with this particular combination. Thank you all for your time and effort in helping me solve this issue. Kind Regards, Clinton Fitch Owner Clinton Fitch (Dot) Com!