KHX1600C9D3B1K2/4GX are rated for AMD and have just as much likelyhood as the Ripjaws X http://gskill.com/products.php?index=233
ASUS M4A78LT-M -> http://usa.asus.com/Motherboards/AMD_AM3/M4A78LTM/#specifications
4 x DIMM, Max. 16GB, DDR3 1800(O.C.)/1600(O.C.)/1333/1066 Hz ECC, Non-ECC, Un-buffered Memory
Dual Channel Memory Architecture
I would flash to version 0802 BIOS "1.Improve system stability, 2.Improve memory stability"
Default In the Memory Over Voltage -> Auto
1600 MHz In the Memory Over Voltage -> 1.65v.
100% certainty -> http://gskill.com/contactus.php
technical support and ask, the answer will be it 'should.'