Summary
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If you really need a Mac Studio, I would get it now, especially if your workload is not GPU bound.
If you can wait until June, then wait.
Pricing
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I suspect the price of the M2 Mac Studio will be the same as the M1 Mac Studio because there isn't going to be a design refresh.
The Macbook Pro 13" was updated to the M2 processor this past June and it kept the same price as its predecessor.
However, the Macbook Air did increase in price because there was a design refresh.
Release Date
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You mention speculation that the M2 Mac Studio may come out in February or March.
I believe it is more likely that the new Mac Studio comes out during WWDC in June, which is 6 months away.
Apple has said that their target for upgrades is around 18 months, but if the the new Mac Studio comes out in February/March, it will only be 11/12 months since the previous model came out, which is too short of a lifespan.
Also, if Apple releases all the M2 Pro/Max/Ultra models in February/March, what will they talk about during WWDC?
Performance
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The performance of the M2 Mac Studio will be dependent on the fabrication node Apple has decided to go with on the M2 Pro/Max/Ultra processors.
If we take the Apple A processors as a reference for performance uplift between node generations, then we can apply that knowledge to make an educated guess at the expected performance uplift of Apple M processors between versions.
Processor | Node | Single Core (Geekbench) | Multi Core (Geekbench) | Metal (Geekbench) | Single Core (%Change) | Multi Core (%Change) | Metal (%Change) |
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A14 | TSMC N5 | 1576 | 3877 | 9175 | | | |
A15 | TSMC N5P | 1705 | 4662 | 14255 | 8% | 20% | 55% |
A16 | TSMC N4 | 1874 | 5382 | 15388 | 10% | 15% | 8% |
| | | | N5 to N4 (%Change) | 19% | 39% | 68% |
Processor | Node | Single Core (Geekbench) | Multi Core (Geekbench) | Metal (Geekbench) | Single Core (%Change) | Multi Core (%Change) | Metal (%Change) |
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M1 | TSMC N5 | 1706 | 7420 | 20440 | | | |
M2 | TSMC N5P | 8928 | 8928 | 30627 | 12% | 20% | 50% |
The current M1 Max/Ultra processors used in the M1 Mac Studio are based on TSMC N5.
If the M2 Mac Studio is based on TSMC N5P like the Macbook Air and 13" Macbook Pro, then expect around 10% single core, 20% multi-core and 50% metal uplift from the current generation.
If the M2 Mac Studio is based on TSMC N4, then expect around 20% single core, 40% multi-core and 70% metal uplift from the current generation.
And if the M2 Mac Studio is based on TSMC N3, then expect around 30% single core, 60% multi-core and 133% metal uplift from the current generation.
I'm thinking the M2 Mac Studio will more likely be TSMC N4, but it is possible to be TSMC N3.
For me, jumping to N3 is too much of a performance leap, but if Apple does go with it -- wow!
It would mean that the M2 Max GPU would be about around the speed of the AMD Radeon RX 6800 XT and the M2 Ultra GPU would be 32% faster than the AMD Radeon Pro W6900X in the 2019 Mac Pro.
Otherwise, if Apple uses TSMC N4, then the M2 Max GPU would be about the same speed as the AMD Radeon Pro Vega II and the M2 Ultra GPU would be around the same speed as the AMD Radeon Pro W6900X in the 2019 Mac Pro.