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Apple 'M1X' chip specification prediction appears on benchmark site

Credit: Apple

Last updated

A supposed listing for an Apple M1 successor has surfaced on a benchmark site, though it's likely that the chip's specifications are a prediction rather than the results of a test.

The "M1X" chip is said to be a 12-core Apple Silicon CPU. As an iteration on the M1, the chip features 12 cores instead of its predecessor's eight. Its internal GPU features 16 cores, instead of the 8-core GPU in the M1.

This is according to an alleged benchmark of a "pre-sample" of the "M1X" that appeared on CPU Monkey. It's impossible to independently verify whether the specifications are accurate, so it's likely wiser to take them as a forecast rather than a true leak of the next-generation Mac chipset.

The specifications do appear in-line with what Apple could release this year. The "M1X," according to the listing, is still a 3.2GHz chip based on a 5-nanometer production process.

If the prediction turns out to be accurate, it looks like the upgrade would be focused on graphics. The listing suggests that "M1X" could have a 16-core GPU with 16GB of maximum memory. It could feature 256 execution units, rather than the M1's 128, and may be able to drive three displays instead of two.

That makes sense because of the first devices that the "M1X" is supposed to appear in. According to CPU-Monkey, the "M1X" will debut in the second quarter of 2021 in a 14-inch MacBook Pro, 16-inch MacBook Pro, and 27-inch iMac refresh. Compared to the previous chip, the "M1X" is also rumored to have a higher power draw with a TDP of 35W instead of the 15W M1.

Again, these specifications are impossible to verify as authentic at this point. And CPU Monkey doesn't appear to have much credibility among benchmarking sites. But, at the very least, the supposed updates seem realistic.

Past reports have indicated that Apple is working on new proprietary chips with 16-core and 32-core graphics processing. Additional reporting also points to new iMac and MacBook Pro models in 2021.



47 Comments

sflocal 17 Years · 6146 comments

I'm really excited to see what the desktop-class ASi chips will be.  I purchased a 2020-iMac with the intent that it will be my last Intel-based iMac, and by the time I'm ready to upgrade it ASi chips will have been out for years, and MacOS apps will be native ARM by then.  It's great to see the next evolution in CPU's coming.  The M1 is smoking the x86 competition and that's a gen-1 CPU!  

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saarek 17 Years · 1589 comments

I hope this isn’t true.

I’m hoping for a true performance king that humiliates AMD & Intel and sets the bar in terms of performance. Primarily GPU based upgrades over the M1 wouldn’t be the big step up in the true “Pro” Macs over the current M1 that I was hoping for.

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crowley 16 Years · 10431 comments

I'd have thought that doubling the GPU core count will still leave it pretty limited compared to a dedicated graphics card unless there's some other special sauce in there.

frantisek 12 Years · 760 comments

I can do such predictions as well 😂. Anyone who reads news. 

I can even predict Geekbench and cinebench score. 
But I hope Applecwill release even variant with higher frequency. Say 3.8 GHz. It would demolish all. 

1 Like · 0 Dislikes
zimmie 10 Years · 651 comments

crowley said:
I'd have thought that doubling the GPU core count will still leave it pretty limited compared to a dedicated graphics card unless there's some other special sauce in there.

The M1's GPU can perform 2.6 TFLOPS. The 16" MacBook Pro currently ships with one of three GPU options:

Radeon Pro 5300M: 3.2 TFLOPS
Radeon Pro 5500M: 4.0 TFLOPS
Radeon Pro 5600M: 5.3 TFLOPS

The iMacs ship with a handful of GPU options:

Intel Iris Plus 645: 0.8 TFLOPS
Radeon Pro 555X: 1.4 TFLOPS
Radeon Pro 560X: 2.1 TFLOPS
Radeon Pro Vega 20: 3.3 TFLOPS
Radeon Pro 5300: 3.7-4.6 TFLOPS
Radeon Pro 5500: 4.7-5.2 TFLOPS
Radeon Pro 5700: 6.7-7.9 TFLOPS
Radeon Pro 5700 XT: 8.2-9.8 TFLOPS

GPU performance scales almost linearly with core count, so this "M1X" (I still think "M1 Pro" is more likely) should manage around 5.2 TFLOPS. That matches the top-end optional GPU on the 16" MacBook Pro and matches the Radeon Pro 5500 on the iMacs (better than the best available GPU for the 21.5" iMac, matches the midrange GPU for the 27" iMac).

AMD doesn't currently make any higher-performing laptop parts, so this is plenty of performance for a 16" MacBook Pro. Matches the best you can get on the Intel version at much lower power consumption. I think either this chip or something very much like it will end up in a high-end Mac mini, the 16" MacBook Pro, and the 21.5" iMac.

Forgot to mention: the M1 also has twice the GPU performance of the Xbox One or Xbox One S. They're still pretty decent compared to dedicated desktop video cards.

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