Thursday, March 28, 2024

Apple | MacBook Pro 14 inch (2021): 24 cores better than 32 cores according to benchmarks | macbook


The new MacBook Pro 14 (2021) with 32-core M1 Max throttles and gnaws at the battery life.  But to what extent?
The new MacBook Pro 14 (2021) with 32-core M1 Max throttles and gnaws at the battery life. But to what extent?

The performance of the current Apple M1 Pro/Max notebooks is undisputedly very good. But if you are looking forward to enjoying the full performance of the M1 Max in a compact 14-inch case, you will be a little disappointed. Because throttling also occurs in the very efficient M1 SoCs as soon as you combine enough cores with a compact case.

The current 14-inch MacBook Pro (approx 2129 euros at Amazon) with an Apple M1 Pro chip already has one in our test Top Award with the result “very good” 93 percent. But how does the M1 Max SoC fare with almost twice the transistors in a compact 14-inch case?

The 32-core GPU in the MacBook Pro 14 is throttled by 35 percent

In a Blender rendering test by MaxTech (see also the video below), 32 cores have virtually no advantage over 24 cores, while there is wonderful scaling from 16 to 24 cores, with an increase in performance of 52 percent. A similar picture emerges with video encoding:

Blender test: Perfect scaling from 16 to 24 cores - none with a 32-core GPU
Blender test: Perfect scaling from 16 to 24 cores – none with a 32-core GPU
8K RAW to 4K h.264: Good scaling from 16 to 24 cores – again none with 32 cores
8K RAW to 4K h.264: Good scaling from 16 to 24 cores – again none with 32 cores

You lose 36 percent of the performance compared to the MacBook Pro 16 with the same 32-core GPU (approx 3849 euros at Amazon), which is simply due to the GPU throttling by 35 percent under combined continuous load. But even with pure graphics load, the clock drops by 13 percent, which is reflected exactly in the FPS in the Tomb Raider benchmark, for example:

8K Canon RAW to ProRes: Significant throttling in the 14-inch MacBook case
8K Canon RAW to ProRes: Significant throttling in the 14-inch MacBook case
Tomb Raider: Poor scaling on MBP 14 with 32 cores and losses compared to MBP 16
Tomb Raider: Poor scaling on MBP 14 with 32 cores and losses compared to MBP 16

24 cores offer the more worthwhile variant

The MacBook Pro 14 inch with 24 compared to 16 graphics cores is particularly interesting thanks to the relatively low surcharge of 240 euros: Because not only does the full performance scaling take place here, but also RAM bandwidth (400 GB/s), encoder as well as ProRes encoders double up, so encoding is 1.5x to 2x faster. Nevertheless, everyone has to decide for themselves whether the additional performance is really needed, especially since 32 GB of RAM must be selected (another 460 euros), if not already done.

h.264 encoding: 50 percent more performance with the M1 Max vs. M1 Pro thanks to dual encoders
h.264 encoding: 50 percent more performance with the M1 Max vs. M1 Pro thanks to dual encoders
h.265 encoding shows almost twice the performance
h.265 encoding shows almost twice the performance

Battery life greatly reduced?

The battery life of the MBP 14 with 32 GPU cores is said to be almost 50 percent worse under load compared to the 14 core. With conventional web surfing, however, the difference – our tests on the 16-inch MacBook Pros with 16 and 32 cores as a reference – should be between 10 and 15 percent.

Apple | MacBook Pro 14 inch (2021): 24 cores better than 32 cores according to benchmarks | macbook | ab35f64c0c144be48d1b0cb4c7807271

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