No zfail technique, no shadow support, low process and lots of things. I tested it on my little bro vaio laptop and it only use 0% CPU Usage where it took 60% on my zyrex SiS Mirage 3. I regret bought this craps.
On my bro vaio laptop with intel GPU making shadow is so cheap and easy, even using the stupidest equation I learn from the elementary book is working. But on my sis mirage 3 card I have to be a rocket scientist to do all the things. "F" for them.