Current 13" rMBP or new 15" rMBP

[beerglass007]

Just brought a 4K 24" dell monitor and can't decide what laptop.

I want to move away from my 21.5" iMac and go 4k

The new 15" with dGPU which quite a few people aren't saying its worth it or the new 13" with Iris Graphics 6100

Has to be 60hz via dp1.2, which both will do now. But will the 15" run smoother ??

Is the extra increase in laptop size worth the hassle for that performance ?

Also does the new 13" have the same SSD speed has the 15" people have reported as having crazy speeds

 

[Cuniac]

It depends what you are doing with it. Both will run the Mac OS and Videos at 4k no issue. However, if there is going to be any gaming done, you would want the dGPU. 4K is a super resource hog. So much so that even the dGPU in the MBP wont be strong enough to do new games in 4k at an acceptable FPS. If games arnt a thing though each should work well. But the dGPU 15inch will work better.

 

[beerglass007]

I'm not that worried about games. But if I had the 15" with dGPU i might play a few games.

Basically i don't have the time to game much these days

 

[T5BRICK]

Also does the new 13" have the same SSD speed has the 15" people have reported as having crazy speeds

The SSD in the 13" model is fast, but the 15" rMBP is even faster. I get 1300-1400MB/s read/write speeds on my 13" rMBP with a 512GB drive.

 

[jesusplay]

13" rMBP early 2015 is complete **** at 4k and 4k video. LLLAAAGGGGG CCIIITTYYY

RETURNED IT.

The graphics card is weak-sauce, IDK if the pro version of Iris is better.

I Order the dual graphics version, I have wayyy more faith in it.

 

[Cuniac]

Ya and with the 15 people say they are getting 1650. I think both will be good. Get the 15 if you can otherwise 13 should be fine.

 

[beerglass007]

So the lag was really bad on the 13" ?

Is that on everything. Even the internal display ?

Is the iris pro 6100 worse than the iris in the mid 2014 ?

 

[~~Hello~~]

So is this lag present when using the iris pro graphics on the 15" then?

 

[evrard]

13" rMBP early 2015 is complete **** at 4k and 4k video. LLLAAAGGGGG CCIIITTYYY

RETURNED IT.

The graphics card is weak-sauce, IDK if the pro version of Iris is better.

I Order the dual graphics version, I have wayyy more faith in it.

This is not true. I have the 13'' running 4k and its very smooth

 

[Cuniac]

It depends on what your doing in 4K. If your just watching a video it will be good. However, the connection type also matters. If your using HDMI its only going to push a max of 30FPS. if your using display port it will get 60

 

[beerglass007]

It depends on what your doing in 4K. If your just watching a video it will be good. However, the connection type also matters. If your using HDMI its only going to push a max of 30FPS. if your using display port it will get 60

Mainly browsing, bit of iMovie with my go pro, VMware, email, might light game if I had 15" but not a deal breaker. I play sim city on my iMac and cities skylines. I wouldn't mind playing them again on my laptop hence why I don't know if I should go with the 15" or just go 13"

I WILL be using the display port 1.2 which supports 60FPS

 

[jesusplay]

This is not true. I have the 13'' running 4k and its very smooth

True for me, hooked up to a 4k monitor at 60Hz through DP 1.2 and lag, reduce to 1080p and lag, ran a 4k video super lag on both sets.

I had the macbook open so maybe it could only support one screen at 4k?

I had a dell 27inch 4k wasn't compatible then I bought a PB287Q and lag at 60hz

my 2015 rMBP comes this week, I expect great results.

I'vee been using my 2011 MBP at 1080p on multiple monitors for years with no problems.