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Actually, normal people don't rub their nose against their display but actually sit at a comfortable distance where you wouldn't notice a difference between 4K and 5K anyway - but still have more usable screen space.

I guess your UHD display (not 4k) has around 110 ppi, the iMac (which is actually more than 5k) has 218ppi. That is 2x as much. If you do not notice the difference from a comfortable distance, you have bad eyesight.
 
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I'm not impressed. My 1,5 Year old OCd, 32GB DDR4, 4.5GHz Skylake i7 Hackintosh has a 6100/22000 single/multicore score. For 3k less. With a 38" 4K display...

Hey there! I also have a Skylake i7 Hackintosh. Curious as to why you weren't able to hit 4.6GHz.
 
When would one use multiple cores all firing at the same time?

It's an honest question.
More cores lets you do more things at one time. Some single apps, such as video rendering with Handbrake, can use multiple cores to render much more quickly. But not a lot of app use multiple cores well since not every task is well suited for it and it’s a hard thing to do.

But even if you don’t use apps that use multiple cores, if you run a lot of different apps concurrently then multiple cores helps because macOS will give each app its own core.

Personally, as a developer I often have lots of apps doing things (compiling, database server, web server) plus have virtual machines running Windows or Linux that each use cores to run their stuff. Bring on the cores!
 
Basically the iMac pro is the nMP in an iMac enclosure. All of the complains and problems people had with the nMP will be the same for the iMac pro. I really don't understand this product. It would have made some sense if the New MacPro wasn't coming in 2018! People sill need and want nVidia GPUs, but they will be stuck once again with a non upgradable AMD GPU and other components.
Because this one was already in the pipeline when the real pro finally managed to get through to Apple with the message that non-expandable machines are not what they want.
 
So, it's custom made to downclock? Interesting indeed.
Lmao
  • Downclocked Suffocated-Air-Cooled CPU
  • Second Classed GPU
They might win the numbers somehow but they are shipping a caged beast with the potential of a World War Hulk. That's sad.

Got great news. You can sell your kidney, eyes, blood, liver, bone-marrow, sperm..
Yo. World breaker hulk. But in 2 years the regular iMac will be 2,000 dollars and perform better
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Please show us a picture of your ugly-ass hackintosh. ;)
Yeah but with iMacs you don't have to build your computer. You can just use it
 
Hence the reason I’m getting my daughter an iMac Pro.
For $4000 you can build:

- Motherboard with diagnostic LED
- Liquid cooler
- 3.4GHz 16-core/32-thread 1950X
- Vega 56
- 32GiB of 3600MHz CL15 DDR4
- 1TB M.2 MLC NMVe SSD (system/scratch)
- 4TB hard drive (data)
- 8TB hard drive (backup 1)
- 8TB hard drive (backup 2)
- BD-RE drive
- 1000W PSU
- EATX case
 
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There’s also something that I’m curious about. To have lots of cores you have to slow them down for thermal reasons. OK, if you’re doing something that parallelises well this is good, but what about when you’re not? You’re not going to buy a second machine just to run things that don’t parallelise, so you’ll just have to put up with running them slowly on a 3ghz core. So my question is - why don’t they have several “low performance” (not really but you know what I mean) cores for parallel things and a single high speed core, like in iPhones? Is this a limitation of x86, or just not something anybody’s tried, or something people have already done?
I think OpenCL is the closest attempt for that, if I understand your question correctly.
 
For $3750 you can build:

- Motherboard with diagnostic LED
- Liquid cooler
- 3.5GHz 16-core/32-thread 1950X
- Vega 56
- 32GiB of 3600MHz CL15 DDR4
- 1TB M.2 MLC NMVe SSD (system/scratch)
- 4TB hard drive (data)
- 8TB hard drive (backup 1)
- 8TB hard drive (backup 2)
- BD-RE drive
- 1000W PSU
- EATX case

You have a breakdown of prices for those? As in a build from an online retailer (like Newegg)?
 
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It's a sick (the good kind) computer but also kinda stupid at the same time. Having to downclock your high-end CPUs due to thermal limitations... What a shame. This thing should just be a separate box that can keep itself cool.

I love how Apple met with journalist to say that they recognize the failure of the MacPro was that it was not upgradable, like pros want. Then they're like, "hey, check out this new iMac we built for pros that that isn't upgradable. Isn't it awesome". The real kick to the nuts is that it has the glorious screen that cannot be used as a stand-alone display once the machine is old and otherwise worthless.
 
"Pro" = downclocked? That's a little weird (though understandable given the space constraints), but the 18 core model is going to be insane.

Still don't think I would buy such a machine in an AIO form factor, that just doesn't make much sense to me. I already had a 4-core iMac go bad on me from the heat (separated the GPU glue), so I don't trust anything with 18 cores in there. Plus the inability to swap displays, or have it repaired easily/cheaply.
 
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im on my third iMac that had, over time got dark patches inside the lcd assembly... (in a pretty damn clean, smoke free environment) - I would hate to spend this sort of amount on an iMac and see similar stuff happening..

Did they ever stop this occuring? Are retina iMacs immune to it? My current is a late 2013 27" i7 and it'd still be perfect if it wasn't for that one stupid issue.

If I had infinite money I would get one of these iMac Pros in a heartbeat and risk it anyway.
 
I love how Apple met with journalist to say that they recognize the failure of the MacPro was that it was not upgradable, like pros want. Then they're like, "hey, check out this new iMac we built for pros that that isn't upgradable. Isn't it awesome". The real kick to the nuts is that it has the glorious screen that cannot be used as a stand-alone display once the machine is old and otherwise worthless.

I've often wondered what happens to these glorious screens after the computer inside is no longer cutting-edge. Surely some of the first-generation 5K iMacs have been replaced by now.

Even if they can't keep up with the latest 3D graphics or video editing... they'd still work great in an office or school, right?

Hell... most machines made in the last 5-6 years will still perform web and office duties.

So when your 5K iMac no longer works for you... you could sell it and it will live on with someone else for many years to come!
 
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I really don't understand this decision. Why limit yourself to a design from 2012 and design a new chassis to accommodate the more powerful internals. You know it will have thermal problems no matter how good they say the fans are. They could have tried a little harder in making this design feel a little more "pro". For example, maybe thinner display bezels, thinner chin, iterate on the stand, etc. Use this "iMac Pro" as a look into the future of desktop macs. ugh this company drives me crazy!

They added a lower vent and two fans to the iMac Pro.
 
I’m more asking about a hardware solution, rather like the high performance and lower power cores in iPhones, but in desktop.

Intel's approach, instead, is called Turbo Boost, where some cores get shut down and others then get clocked above their regular clock rate. So, for the many situations where you can't make good use of all cores, fewer cores at higher rates get used.
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I can tell you from experience it is a bad feeling not to have it in 2017.

Well, in that case, I can tell you with certainty that your needs are vastly different than those of the average iMac Pro customer.
 
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