I had been using the MSI 865PE Neo2-P Platinum Edition motherboard and it was working fine with 1GB memory. Today I have bought 4GB memory of Kingston. The maximum supported size of the motherboard was 4GB. But when I installed the ram on the mobo, the BIOS is not able to detect the whole memory. It is just showing 3GB as usable. i donít know whether there is a latest BIOS to fix this issue and I never searched for it yet.