Can bring two for personal use without paying duties!
of course, as mentioned, you're not going to claim anything. if they doe check, simply tell them one is for gaming, one is for work. for your personal use and you travel back and forth with them all the time. shouldn't be a problem. just take out of the shipping box, use that new laptop bag you bought and your set. but much better to buy a laptop from states, they are so much cheaper with more bells and whistles. 1/2 price to anything comparison over here. when i got mine a year of so ago, it was 27,000 baht, couldn't touch it here for less than 65K. very few even offered 17 " screen then.