Red Tube is quite a big name in the world of adult entertainment and while they're certainly not the best destination to find gay Asian material, I still think you might want to check out what they have on offer thanks to a few relatively unique features they boast.
Firstly, you're able to specify the display of gay videos alongside any search terms you require: this makes it easy to get rid of lesbian scenes or tranny clips. It also has a few HD scenes that are clearly labeled in order for you to enjoy. While the archive is a little on the small side with just under 2,000 scenes, it's still more than enough for even your most addicted of gay Asian porn watchers.
RedTube.com scores pretty high and with the ability to sort based on rating, I think you're going to love it. So yeah, head on over right now and get yourself Chinese twinks and Japanese daddies.