Usually RMA it take about a month or 5~ 6 weeks, some worse it about 2 months.   
best RMA i think is Intel bah.. last time i RMA less than 3 days i got it.
but heard that they change the RMA policy, it will take a week or twice.
Good luck bro.

FYI: MSI (high-end board) it sent back to TAIWAN and repair, my dealer told me, in malaysia they dont have parts to repair.   

and we CANNOT listen what they promise. becoz they always give ZERO promise.