MSI Motherboard X48C Platinum

If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation).

Per MSI, DDR2 and DDR3 cannot be installed at the same time. If installing DDR2 DIMMs into slots 1 and 4, MSI Turbo Cards must be installed DIMM_DDR3 side down into slots 2 and 5. If installing DDR3 DIMMs, MSI Turbo Cards must be installed DIMM_DDR2 side down into slots 1 and 4. MSI Turbo Cards are memory switchers that configure the motherboard for DDR2 or DDR3 operation.