rMBP 13" Mid 2014 - no 4k over TB?

[irock101]

Hey,

I just got a 13" rMBP mid 2014 and having it connected through thunderbolt to my Samsung u28d590 but the max resolution i get at 60Hz is the one shown below. Any idea how I can get true 4k at 60hz ?

Thanks in advance,

 

[priitv8]

AFAIK Intel Iris iGPU in that machine is not capable to that.
Check the other threads in this forum on the same topic.

 

[cjmillsnun]

You need Iris Pro graphics (15" rMBP) for that.

You can do 4k at 30 Hz but you will notice a screen flicker.

 

[yjchua95]

Hey,

I just got a 13" rMBP mid 2014 and having it connected through thunderbolt to my Samsung u28d590 but the max resolution i get at 60Hz is the one shown below. Any idea how I can get true 4k at 60hz ?

Thanks in advance,

Image

It can't happen. The U-series CPUs used in the rMBPs are totally incapable of supporting 4K @ 60 Hz.