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The Mac & i review shows how Apple's software solution affects the heat and performance of macOS and Windows based on three models .
Apple's new business notebooks were hit hard after the delivery of big problems at full load: The Coffee Lake processors ran very fast, but allowed themselves after a few breaks due to overheating . This has been reflected by stagnation and underperformance.
This result was, among other things, a test of three new MacBook Pro models in the Mac & i editorial, which appears in issue 4/2018. As soon as the article was printed, Apple released an update of macOS against the limitation with the "additional update macOS High Sierra 10.13.6". So when the magazine hits subscribers and trades next Tuesday, it contains benchmark scores that were still measured without the fix.
As a service to its readers, Mac & i has therefore repeated all the tests with patched MacBooks. and publish it here online. For comparison, the bar chart below also includes the values of three MacBook Pros from 2017 and the heart of the iMac Pro 8. Buyers of the brochure can also directly understand the effect before-after because the measurement conditions have not changed.
MacBook pros from 2000 to 5560 Euro tested
Three models participated in the Mac & i test. The input is borrowed by Gravis 2000 € MacBook Pro 13 "2.3 GHz with 256 GB SSD – cheaper than you can not get to a 2018 device from Apple came a very build-to-order model far improved, It comes with 16GB instead of 8GB of RAM, a quad core Core i5 processor with 2.7 instead of 2.3GHz and a PCIe x4 SSD with 1000 instead of 256GB. It costs 3349 euros. [19659004] 5560 euros is paid for that MacBook Pro 15 "provided by Apple with the core processor Core i9 2.6GHz, Turbo Boost 3.8GHz, 32GB DDR4 RAM and 2TB SSD. Much more upgrade does not work: the version with a SSD 4-TByte would cost only 2400 euros more.
The 13-inch model uses the Intel Iris Plus Graphics integrated with 128 eDRAM. The 15-inch devices have a dedicated graphics chip, here an AMD Radeon Pro 560X with 4GB of RAM GDDR5
The effect of overheating
Without the update, the processors with clocking higher levels performed well. After a while, however, it failed, because the allowable temperature on the die was reached and the clock frequency for cooling was temporarily lowered. This was then noticeable in shakes when reading or rendering stopped for a second. In addition, the computers did not reach their optimum performance on a longer charge – as it turned out after the update.
Apple "Bug Fix" provides a missing digital key in the firmware, indicating the affected thermal management and clock speed. More betrayed Apple did not do it.
The patch ensures a timely and metered down-clocking that allows continuous work, but of course slows down a little bit the top speed. As a result, overall performance can increase and decrease, especially in the short term, or remain unchanged in most cases because the benchmark depends, for example, on SSD or graphics that remain unchanged. For more details, see more details
More power to the load
The three MacBooks have achieved better results with the multicore Cinebench 15, which renders 3D objects on all available cores. The jump on the MacBook Pro 15 "with Core i9 was particularly important, from 861 to 1006. With Intel's Power Tool Gadget 3.5.3, it's very nice to see that the jaggies of the frequency curve are much more This also applies to rendering on a kernel, where the throttling effect occurred later, as the system could alternately charge the kernels and cool them, but with Overclocking of the Turbo Boost enabled, heat
Operating in the CPU and GPU reference at full load at the same time, especially computers with integrated graphics have benefited because the better heat management of the CPU cores relieves the neighboring GPU With MacBook Pro 13 "2.3 G Hz, the Luxmark value for CPU + GPU has increased from 6055 to 8089 points, for the 2.7 GHz model from 6595 to 8320. The MacBook Pro 15 "2.9 GHz with its dedicated graphics chip has increased from 14558 to 15356 points
3D games are primarily related to graphics power, but the processor can also affect the frame rate, especially if Mac porting is poor. With the update of Dirt III, Batman Arkham City and especially Tomb Raider delivered systematically higher results, especially on 13-inch computers. For the MacBook Pro 13 "2.3 GHz, the frame rate for Tomb Raider goes from 36 to 46 fps, for the 2.7 GHz model from 33 to 47. The MacBook Pro 15" 2.9 GHz with its dedicated graphics chip does, after all from 64 to 83 fps.
For all other benchmarks published except for Mathematica, the results varied with and without correction in terms of measurement accuracy. These tests terminate too fast, do not require full CPU power, or verify SSD speed.
The update corrects shutdowns and emergency shocks, but the new Coffee Lake processors produce – even if they operate continuously – still a lot of waste heat. So fans often turn up and up early. In addition, the keys become very hot in full charge and demanding 3D games.
The practice benchmarks of 2018 MacBook Pro models with the well-established Apple patch compared to the predecessors of 2017 and the iMac Pro.
Windows Limitations on
Performance levels do not significantly improve with a Windows 10 Enterprise boot camp. In the Intel Power Gadget 3.5, we can observe that the clock frequency on the MacBook Pro 15 "falls below 1 GHz after a while of full charge with Cinebench 15.
The macOS High Sierra 10.13. 6 1.49 GB Update "has also corrected the firmware of Macs, but optimizations in temperature management seem to have been made on the side of macOS, otherwise the reference values and GHz measurements under Windows would have also changed.
for Windows there is a chance to get an update – from Apple for boot camp driver or Microsoft for Windows.
Conclusion
Embarrbading for Apple that they have several thousand euros devices with serious flaws on the However, Apple deserves respect for fixing the bug so quickly, and there is had an apology, after all.
With the update, the new MacBook Pros now deliver very good CPU and SSD speed values for a laptop. The graphics performance is excellent – especially the good connectivity for external displays up to twice 5K – but not enough for hardcore players. If you shake your 2018 MacBook Pro, you will also have to expect high speed fans. In usual activities such as texting, surfing or mailing, they are calm.
In issue 4 of Mac & i, which is published on Tuesday, you will find all other test results on battery, keyboard, screen, T2 chip, Hey Siri, Bluetooth 5, Thunderbolt 3 or Boot Camp.
MacBook Pro 13.3-inch
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