MSI MS-9246 - Manual (Page 31)

2-7
System Hardware
5. Place the heat sink on top of CPU1 and secure the screws on both sides.
7. Install the second heatsink.
Note: The heat sink has to be installed to prevent the CPU from overheating.
8. Replace the fan duct.
Note: To ensure proper cooling, make sure the heatsinks & the fan duct are properly installed.
Note: To install DUAL CPUs on the board, you must use the same
types of CPUs running at the same FSB frequency.
6. Remove the dummy heatsink on socket CPU2. Follow the same procedures to
install the second CPU.