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Maybe someone inside Apple is running geek bench on the latest A14Z ARM under rosetta2 emulation. ;)
 
For comparison, here's my 2019 iMac (i5/Vega 48)

Screen Shot 2020-07-01 at 6.41.42 PM.png


And the comparison link: https://browser.geekbench.com/v5/compute/compare/1152079?baseline=1117678
 
Then you are in for a huge disappointment.
We have compiled FFmpeg for ARM and did run on the latest iPadPro. Encoding a 2h 4K movie to HEVC did take +2hours. On an Intel i7 (not the fastest) it took less than 20minutes.
The fastest ARM CPU is still way slower compared to a mediocre Intel.
Basically this means Apple silicon will be good for basic things as long it does not need heave pure CPU power. Ofcourse the Metal APIs will use the GPU too, still in general use it will be a lot slower.

I did a bit of reading on this. The x265 HEVC encoder uses handwritten, vectorised x86 assembly for certain performance critical operations, and hasn’t seen the same optimisation for ARM. This explains the huge performance discrepancy between the A12X and the i7 in HEVC encoding. In encoding another modern codec (VP9), and in general purpose compute, the A12X’s performance is very competitive with Intel’s chips.
 
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What honestly is the point of still releasing intel Macs now?

Because ARM-Macs are not yet a reality? Apple is still a business and needs to keep up sales volumes with existing and improved designs.

In any case, it is likely that the "power machines" with 8+ cores will be the last to transition to ARM, so you could be waiting 2 years for an ARM version of this 10-core iMac. Do you expect Apple not to market the Intel Mac until that time?
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Then you are in for a huge disappointment.
We have compiled FFmpeg for ARM and did run on the latest iPadPro. Encoding a 2h 4K movie to HEVC did take +2hours. On an Intel i7 (not the fastest) it took less than 20minutes.
The fastest ARM CPU is still way slower compared to a mediocre Intel.
Basically this means Apple silicon will be good for basic things as long it does not need heave pure CPU power. Ofcourse the Metal APIs will use the GPU too, still in general use it will be a lot slower.

That is an interesting experiment, but I think it shows more about the lack of software / compiler optimization for ARM, than any inherent weakness of the architecture.

In the data centre we're already seeing 48-80 core ARM chips that are beating Intel Xeons in performance/watt, and even in absolute performance for some workloads. This just needs to move into the desktop CPU space.

I really doubt that Apple will release ARM CPUs that are slower than the equivalent Intel chips available at the time. Sure, they will start with entry-level machines, but you can bet that they will be working on something to improve on 12+-core Intel Xeons. Watch this space!
 
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I feel this is an acknowledgement that Apple Silicon iMacs may not be ready for some creative workflows on day one. This is the Mac for most graphic designers. I'm looking forward to the ARM Macs myself. Will be picking one up on day 1 for sure. I hope they have 120hz displays. I'm spoiled by my iPad Pro.
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Then you are in for a huge disappointment.
We have compiled FFmpeg for ARM and did run on the latest iPadPro. Encoding a 2h 4K movie to HEVC did take +2hours. On an Intel i7 (not the fastest) it took less than 20minutes.
The fastest ARM CPU is still way slower compared to a mediocre Intel.
Basically this means Apple silicon will be good for basic things as long it does not need heave pure CPU power. Ofcourse the Metal APIs will use the GPU too, still in general use it will be a lot slower.

That isn't a good example. It has hand optimized vector code for Intel with no ARM fallback. Apple already announced they will be optimizing FFmpeg for the arm64e instruction set which is quite gratious of them.

In my own tests, my iPad Pro easily takes on my MacBook Pro with a much lower power budget. The new Macs will have much larger faster chips and a larger power budget. They will certainly blow Intel chips out of the water.
 
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My guess is Intel based iMac retain current design and the Apple Silicon ones will have the new design to differentiate the models. That seems a likely Apple thing to do. I seriously doubt the Intel and Apple Silicon models will look the same.

The rumor is the Intel will get the new design. It makes sense to me. Some creative users might be stuck on Intel the longest due to compatibility issues. Apple is being kind by allowing them to use a Mac with the new design.
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Incorrect. The last generation of a chipset is always a far better and smarter purchase than the first few generations of a new chipset.

Generally the advice is to wait one refresh to avoid issues, not a few. The new chips will come with so many new capabilities it will not be worth waiting this time around. Unless you *need* Intel, it will definitely be better to upgrade. At the least, ARM chips will be significantly faster than Intel, they are more secure, may have Face ID, may have 120hz screens, better GPU, machine learning chip, more enterprise management features, and support to run iOS software on Mac. The technology has already been extensively tested on iOS devices which far outnumber Macs. Going forward there will not be as much effort put in to optimizing for the legacy Intel architecture.
 
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If the refreshed iMac has Wifi 6 and still has a replaceable SSD (no T2) it would be very tempting.

If the SSD is soldered on that would make it much less attractive.
 
LOL at the picture with the article. Do people actually think the IMac is going to look like that? 🤣
 
I did a bit of reading on this. The x265 HEVC encoder uses handwritten, vectorised x86 assembly for certain performance critical operations, and hasn’t seen the same optimisation for ARM. This explains the huge performance discrepancy between the A12X and the i7 in HEVC encoding. In encoding another modern codec (VP9), and in general purpose compute, the A12X’s performance is very competitive with Intel’s chips.

All code is hand written and with encoders/decoders it is always vectorized.
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Not for a particular processor, but for a different architecture? Surely developers tweak things? Also how the Native instruments Massive X pluggin only runs on an AVX compatible processor which is an Intel thing, no?

Im not arguing, i just don't know that much in this regard so I'm interested in your take

AMD has AVX and the Zen 2 has AVX2.
 
These iMac designs were finalized several months ago, RNDA2 wasn't a thing then and we don't know for sure which RNDA2 GPUs (it may be desktop/console only and mobile style next year instead) are coming out later this year. Apple isn't going to take a risk of any potential RNDA2 delays and ship with current latest tech they can get at their scale.

iMac has always used the weaker GPUs, this is nothing new.

It was a thing, they knew about it and worked with it more than months ago, RDNA2 was referenced in macOS for long time, in macOS Big Sur there already references to RDNA3 😣

Yes, true, but why they need to handicap iMac in the GPU department it's ridiculous how weak GPUs they use at that price points and always generation or more behind, it just feels like a scam, kinda unethical 😞
 
How does this compare to an iMac Pro?

If we compared with equivalent 10-core equivalent iMac Pro, this comet chips should be faster. Remember newer consumer Intel chips usually cannibalize some older HEDT chips. Not sure if pitted against 14-18-core model.

For GPU iMac Pro Vega 64 still better for compute too, compared with 5000 Navi series which a bit weaker albeit have higher bandwidth.
 
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The 580X is the standard (non-upgraded) on the 27inch that opens up the i9 option, but yeah, now that my head is on straight, I was only thinking of the biggest and fastest offering. Like, there are other iMac's? lol. So sorry, I will slink back into the shadows now.

I would expect the new 5600 from the 16" MBP the other week to be the high end option on this new iMac. It's a beast, only 50 watts, 3x faster than the 5500M, has HBM2, and keeps up with a 5700XT.
 
I would expect the new 5600 from the 16" MBP the other week to be the high end option on this new iMac. It's a beast, only 50 watts, 3x faster than the 5500M, has HBM2, and keeps up with a 5700XT.
Depends on how thin they push the new design or what the new design will even be? It's generally a notch or 2 faster card for the iMac's of the same generation. We shall see.
 
Me thinks Apple must be pretty confident in their own Apple Chips as they will have to beat this performance
Seems an impossible task, but we will see. I can't see emulating Windows outperforming running it on a machine with an Intel CPU.
 
Maybe slightly OT, but have Apple made any commitments to thunderbolt post intel? I know that it’s possible with ARM but have they said anything about it?
 
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Then you are in for a huge disappointment.
We have compiled FFmpeg for ARM and did run on the latest iPadPro. Encoding a 2h 4K movie to HEVC did take +2hours. On an Intel i7 (not the fastest) it took less than 20minutes.
The fastest ARM CPU is still way slower compared to a mediocre Intel.
Basically this means Apple silicon will be good for basic things as long it does not need heave pure CPU power. Ofcourse the Metal APIs will use the GPU too, still in general use it will be a lot slower.
I have no doubt there will be some instruction set extensions as well as additional hardware-based accelerators and other custom coprocessors that will more than offset current deficiencies.

Also, consider that the iPad has a low-wattage CPU in a fanless enclosure with a rather limited ability to remove heat. AS Macs won’t be nearly as constrained.
 
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After the debacle of the i9 in my 16" MBP, I'm not interested in another non-Pro Mac. Had to replace the 16" with an iMac Pro which is dead silent, thankfully.
 
Then you are in for a huge disappointment.
We have compiled FFmpeg for ARM and did run on the latest iPadPro. Encoding a 2h 4K movie to HEVC did take +2hours. On an Intel i7 (not the fastest) it took less than 20minutes.
The fastest ARM CPU is still way slower compared to a mediocre Intel.
Basically this means Apple silicon will be good for basic things as long it does not need heave pure CPU power. Ofcourse the Metal APIs will use the GPU too, still in general use it will be a lot slower.

A lot will depend on what Apple does with an AS ARM. They could very well optimize the OS and As to improve performance; as well as other aspects of the design. Will it be as fast as the fastest Intel chips? Probably not, at least at first; but I would guess it would outperform chips used in lower end Macs. It would make no sense for Apple to release a mediocre ARM based machine since that would drive a narrative of "Apple's ARM can't compete with Intel" and seriously wound Apple's move to ARM at the onset.

As for ARM being slower than Intel, Fujitsu’s 48-core A64FX would beg to differ.
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It's a tough situation. I use my iMac daily for work. I am ready for a new machine. But I am not sure I want to spend 4 or 6 grand on a new iMac Pro or built out 27 inch, and have Apple Silicon in a year completely move beyond it...ugh. This was going to be the year I bought a new machine. But now...Ugh...
I see your point; I am in the same boat. I think it will be at least 2-3 before Apple's ARM machines prolifearte across the lineup. Most machines bought today will still be useful then and beyond, mush will depend on how fast current OS X Intel based based software migrates to ARM versions.
 
It could be a fake benchmark by someone using a Hackintosh... Wasn't it ages ago when Steve Jobs was still alive, that he complained about some apps which sent reports about their new products they were testing at the time?
I don't think Apple will get caught by this over and over again?

I hope the new ARM Macs will be silent machines - the fan noise of modern Intel Macs are pretty annoying.
 
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