Intel iris and iris pro

[Rchawks]

I noticed the 13 inch rMBP has intel iris and the 15 inch has iris pro, what's the diff. Between the two?

 

[Graeme43]

Iris Pro benches around speeds of Geforce 650M (the one previous MBPR had)

 

[yjchua95]

I noticed the 13 inch rMBP has intel iris and the 15 inch has iris pro, what's the diff. Between the two?

The Iris Pro 5200 has a 128MB fast eDRAM (L4) cache.

The Iris 5100 doesn't have it.

 

[Rchawks]

So the eDRAM would be used for faster processing of information under more graphic intensive programs, correct? Would this cross over to faster (smoother) video playback or more for spread sheets type programs?

 

[yjchua95]

So the eDRAM would be used for faster processing of information under more graphic intensive programs, correct? Would this cross over to faster (smoother) video playback or more for spread sheets type programs?

More or less.

Video playback wouldn't be really affected by the GPU; neither will having more spreadsheets open.

 

[Rchawks]

What situation would require the use of the pro version then? Or is the pro required to drive the larger screen on the 15 inch.

 

[leman]

The 'pro' version is simply faster. That's all there is to it. It will be faster for computer games and some workflows which utilize the GPU. Also, some CPU algorithms could benefit from the larger cache. The reason why 13" doesn't have the pro graphics is because Intel does not have a dual-core CPU equipped with it.

 

[Rchawks]

Thank you for your prompt responses

 

[shansoft]

Iris Pro benches around speeds of Geforce 650M (the one previous MBPR had)

It does not even come close to it. The closest it can get is probably certain heavily optimize software for Intel iGPU.

 

[yjchua95]

It does not even come close to it. The closest it can get is probably certain heavily optimize software for Intel iGPU.

To be specific, Iris/Iris Pro is optimised for OpenCL software.

Photoshop CC seems to work better on my Iris Pro compared to the GT750M, probably because ever since CS6, Adobe stuff are optimised for OpenCL.

 

[thekev]

Iris Pro benches around speeds of Geforce 650M (the one previous MBPR had)

That is incorrect. If you're running games, the 650m is still significantly faster. Don't just repeat everything you read on here.

To be specific, Iris/Iris Pro is optimised for OpenCL software.

Photoshop CC seems to work better on my Iris Pro compared to the GT750M, probably because ever since CS6, Adobe stuff are optimised for OpenCL.

It should be about equal on either. Photoshop CS6 and CC do take advantage of it, but they don't scale well. There also isn't that great of a difference between the two for computation. Benchmarks lie.

 

[ha1o2surfer]

That is incorrect. If you're running games, the 650m is still significantly faster. Don't just repeat everything you read on here.



It should be about equal on either. Photoshop CS6 and CC do take advantage of it, but they don't scale well. There also isn't that great of a difference between the two for computation. Benchmarks lie.

You are exactly right, I'm surprised this is still the common thought.. a 650M is much more powerful when it comes to raw rendering.

 

[Vanilla35]

Iris Pro benches around speeds of Geforce 650M (the one previous MBPR had)

Iris Pro actually benches around the speed of the 640M. And regardless, the 640M is still a better choice for games. Once you go into resolutions higher than 1600x900 the frames for Iris Pro start to sink. The dGPU holds stronger even at higher resolutions.