M2V-MX SE has VT8237S, K9VGM-V has VT8237A.
I have datasheet for VT8237A and not for VT8237S. If it would take five weeks to get it :/...
http://www.msicomputer.com/product/p_spec.asp?model=K9VGM-V
Supports 1.8v DDR2 SDRAM DIMM Due to the High Performance Memory design, motherboards or system configurations may or may not operate smoothly at the JEDEC (Joint Electron Device Engineering Council) standard settings (BIOS Default on the motherboard) such as DDR2 voltage, memory speeds and memory timing. Please confirm and adjust your memory setting in the BIOS accordingly for better system stability.
Wtf?
Rudolf