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I work with large 35MB RAW images from a 5D Mark III in my regular workflow. One of the big things that photographers need is SSD throughput. As you know if you have a large library, you have to store it externally. If you store it on a standard non-raid non-sad array that will be a HUGE bottleneck when viewing images in LR/Aperture. So just know what your needs are because they are different for different parts of the workflow and you should budget accordingly.

Viewing and minor editing without lag in LR/Aperture: Need external raid array or large amount of ssds

Editing in photoshop: Above + high amount of memory (16gb minimum) + processor speed (Aperture requires decent GPU)

So which would be the best GPU? Iris Pro or 750M driving an external monitor?
 
The 750m is faster than the Iris Pro (which is why it's more expensive).

Just to be sure my question is specific to using Photoshop and Nikon Capture with a external monitor connected, I have no interest in games.
 
I haven't seen benchmarks comparing the two (maybe another forum member can chip in) but usually the dedicated GPU (the 750m in this case) is much faster than the integrated option (the iris pro). However, early benchmarks show the iris pro to be quite a beast, but still not probably as good as the 750m.
 
I got this Acer 17" laptop with better specs than the Macbook pro for $1000. Their Aspire V3 line is the best you can get
 
I haven't seen benchmarks comparing the two (maybe another forum member can chip in) but usually the dedicated GPU (the 750m in this case) is much faster than the integrated option (the iris pro). However, early benchmarks show the iris pro to be quite a beast, but still not probably as good as the 750m.

I want to use the computer (new macbook pro) for lightroom, photoshop connected to two external displays (one 23 and one 27). Should I get the one with the 750M because I plan on keeping it for the next 4-5 years or Iris pro 5200 will be enough?

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I got this Acer 17" laptop with better specs than the Macbook pro for $1000. Their Aspire V3 line is the best you can get

you got a spinning disk...not as fast as new macbook pro!
 
I do shoot with a full frame and work with tiffs in photoshop. Right now it is more of a hobby but I am starting to get serious and use it as more of a side source of income.

With that being said, portability is my main concern which is why I was originally going to jump the gun and grab the 13 inch- top specs. But now I'm having second thoughts. I may end up going to the apple store and checking each one out. Problem is that they probably wont have the programs I use installed on the macs.

Thanks
 
I do shoot with a full frame and work with tiffs in photoshop. Right now it is more of a hobby but I am starting to get serious and use it as more of a side source of income.

With that being said, portability is my main concern which is why I was originally going to jump the gun and grab the 13 inch- top specs. But now I'm having second thoughts. I may end up going to the apple store and checking each one out. Problem is that they probably wont have the programs I use installed on the macs.

Thanks

Your shooting style will also make a difference. I shoot RC airplanes/helis/cars/truggys so I use the 'spray and pray' approach to shooting. I end up with hundreds of RAW files ready to be processed at a time. My wedding photog buddies also go through tons of RAW files. Like I said, my quad core rMBP chews through them much faster than my dual core machines. If you're only shooting a pic here and there then the speed difference would be inconsequential. I would go with the 8gb of ram for sure as a 36MP RAW files eats up a ton of ram quickly when working with multiple layers and such in photoshop.
 
Give you a little clue here and these boxes go back to a MBP 15 inch dual core versus the 15 quad core. Basically they where both the same boxes except for the quads when I updated. But using Capture One for Raw processing of files my batch times where reduced from lets say 25 seconds per image to 12 seconds per image. So the times on the dual processor where twice as long than the quad. Now this is also based on a processor dependent software and maybe 4gbs of ram running a batch of images. Quad core in this case is twice as fast. Now friends Mac Pros with 8 cores would rip me apart with much faster times. I need a road machine though so a MacPro won't work for me. Just food for thought
 
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