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Which iMac

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brianleighty:

--- Quote from: daniemare on December 06, 2012, 07:51:07 PM ---
--- Quote from: brianleighty on December 04, 2012, 01:12:28 PM ---
--- Quote from: bycostello on December 04, 2012, 04:29:59 AM ---photo and video, by the biggest and fastest of everything....

--- End quote ---
I think this negates a valid price vs performance analysis. I just ended up building a hackintosh last night because the 27" iMac is out of my price range and the 21" is pretty much not upgradable at all unless you have apple do it which is super expensive. I think the stock CPU will be fast enough for you. Graphics card won't make a huge difference either. These are all incremental upgrades. The fusion drive though might be worth it. I made my own fusion drive since it's a hackintosh and it only cost me $75 extra. I think apple charges $250 which isn't cheap but for apple standards isn't bad. The only way to do this on an iMac if you don't get it with it is to setup a thunderbolt SSD and by that point you're better off just getting it from Apple. That's my take on it. So from Apple, possibly Fusion drive and then upgrade the ram your self.

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Thanks.  So you feel the stock i5 on the 27" is good enough.  What is the advantages of i7 then?

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Well you end up spending an extra $400 ($200 for the upgraded 27 and $200 for the processor) for it so my thinking is why not save that money and probably in another 3-4 years put that towards a new one. My best guess is you'll get a max 25% increase in CPU speed with the upgrade. From the last gen iMac to this one you're looking at a 25% increase in processor overall and some benchmarks I believe showed up to 100% increase. So if you  use that as your "upgrade path". Then over the course of 3-4 years you get more value for your money there. I have no doubt the stock 27" iMac will be plenty fast and will be a huge upgrade from your current system.

V8Beast:

--- Quote from: daniemare on December 06, 2012, 07:51:07 PM ---
Thanks.  So you feel the stock i5 on the 27" is good enough.  What is the advantages of i7 then?

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This might be too little info too late, but the Core i7 can hyperthread while the core i5 can not. That means the Core i7 functions as an 8 core processor, while the Core i5 functions as a 4 core processor. I'd spend the extra couple of hundred bucks on the Core i7. The Core i5 is quite old at this point, and I'm surprised Apple offers it in a newly revamped machine like the iMac.

fonts:

--- Quote from: V8Beast on January 26, 2013, 09:23:06 PM ---
--- Quote from: daniemare on December 06, 2012, 07:51:07 PM ---
Thanks.  So you feel the stock i5 on the 27" is good enough.  What is the advantages of i7 then?

--- End quote ---

This might be too little info too late, but the Core i7 can hyperthread while the core i5 can not. That means the Core i7 functions as an 8 core processor, while the Core i5 functions as a 4 core processor. I'd spend the extra couple of hundred bucks on the Core i7. The Core i5 is quite old at this point, and I'm surprised Apple offers it in a newly revamped machine like the iMac.

--- End quote ---

The i5 is a great inexpensive alternative. But honestly for photo and video, just like a previous poster said, you'll the good everything. GPU should def be atleast 1GB. You can definitely get by with the i5 if you don't have the money after getting the GPU, but if you can, get both.

paul13walnut5:
I use a mac pro at work and an imac and macbook pro at home.

I've an old (in computer terms) i7 from 2009. 

The main upgrade I would consider is your internal drive, fusion or SSD, pref SSD, forget the 7200 option.
Personally I would spec two SSD's, one smaller for your system, one larger as an external raid capture scratch (can get great capacity per buck with 2 or 3x Baracuda HDDs stripe raided)

64bit processors on fast buses are only really working properly if you are getting the data throughput, the imac bus might be pretty fast, as may your ram, but the large spinnng 3tb disc is going to be the slow point.  With a system like what you are speccing the weakest link in the chain is data transfer.  120MB's or so is fantastic from an HDD, but you could be hitting double that with SSD's.  Then the extra RAM etc will make a difference.

System performance increases are always going to be hamstrung by a spinning disk, even thought the estaIII barracudas are fast.  SSD's are much faster, to the point where I would forsake some RAm (Buy crucial and retrofit your RAM) and the i7 for two internal SSDs and a 2x or 3x HDD external RAID.

Waterdonkey:
I got the 27" 3TB Fusion Drive Fastest chip and all the ram i could fit.... and I haven't looked back.  Finally a FAST computer! Quick- quick like the wind! :o

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