What 4K modes does MacBook Pro (Late 2011, Radeon HD6750M) support? I have a MacBook Pro Late 2011, and I'm planning to buy a 4K monitor (http://www.samsung.com/levant/consumer/computers-peripherals/monitors/led-monitor/LU28D590DS/ZN).

However, all the Internet is bloated about 4K support with different answers about 4K support on MBPs. Some say it's not possible, some say only at 30 or 24Hz, some say with multistream etc.

What can I exactly get with late 2011 MacBook Pro (Mavericks 10.9.4) in terms of 4K?
I have a Dell P2815Q monitor (nearly 4K) connected to my MacBookPro Early 2011 running 10.9.4 (13E28)