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Anyone get 60hz to work at 4K on MB Pro Retina?

E

Eric-PTEK

macrumors 6502
Original poster
Mar 3, 2009
450
2
I have a 5 month old MB Pro 13" Retina connected to a Dell 24" 4K monitor, one of the approved monitors from Apple.

It works but only at 30hz and not 60. I am running the 10.10 beta with all the latest updates but no luck.

I read somewhere that someone used 2 cables and ran each half of the screen at 60hz but not what I am looking for.

Their 4K scaling looks great but the 30hz is killing me.
 
Eric-PTEK said:
I have a 5 month old MB Pro 13" Retina connected to a Dell 24" 4K monitor, one of the approved monitors from Apple.

It works but only at 30hz and not 60. I am running the 10.10 beta with all the latest updates but no luck.

I read somewhere that someone used 2 cables and ran each half of the screen at 60hz but not what I am looking for.

Their 4K scaling looks great but the 30hz is killing me.
Click to expand...

Not possible, the 13" rMBPs Iris chipset/Intel chipset maxes out at 30hz. See previous threads about it.

If you need 4k @ 60hz your only option right now is a 15" rMBP or a Mac Pro. No other computers in Apple's lineup support it.

Some users have reported being able to run up to a maximum of 52hz with SwitchResX - but that isn't officially supported.
 
Last edited:
Eric-PTEK said:
I have a 5 month old MB Pro 13" Retina connected to a Dell 24" 4K monitor, one of the approved monitors from Apple.

It works but only at 30hz and not 60. I am running the 10.10 beta with all the latest updates but no luck.

I read somewhere that someone used 2 cables and ran each half of the screen at 60hz but not what I am looking for.

Their 4K scaling looks great but the 30hz is killing me.
Click to expand...

The U-series Haswells with Iris 5100 do not support 60 Hz.

Only the 15" rMBPs with Iris Pro and/or 750M support 4K @ 60Hz.
 
yjchua95 said:
The U-series Haswells with Iris 5100 do not support 60 Hz.

Only the 15" rMBPs with Iris Pro and/or 750M support 4K @ 60Hz.
Click to expand...

And they only support HDMI 1.4, so you have to be connected to the display via DisplayPort to get 60hz.
 
Anyone want to buy a 13" MB Pro :)

Crap...and to think I almost bought the 15" many months ago when I got the 13".

I wanted the portability of the 13" but now since this will be my main machine at home I'll have to get a 15".

Will it run 2 monitors by chance at 4K if I get the Nvidia unit?
 
Eric-PTEK said:
Anyone want to buy a 13" MB Pro :)

Crap...and to think I almost bought the 15" many months ago when I got the 13".

I wanted the portability of the 13" but now since this will be my main machine at home I'll have to get a 15".

Will it run 2 monitors by chance at 4K if I get the Nvidia unit?
Click to expand...

The current rMBP only supports outputting to one 4k display. If you want to run multiple 4k displays your only choice from Apple is a Mac Pro.
 
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