As reported by MacRumors, eager Apple developers are already posting benchmarks on the developer transition kits for Macs with Apple silicon. These kits are based on the Mac mini chassis but include ARM-derived Apple silicon rather than Intel CPUs.
Before we dig in, it's important to note a few caveats. First, the CPU included in these developer kits may or may not reflect the CPUs included in future Apple Macs. These are not consumer products; they're developer tools. Second, the benchmarks were done using Rosetta, which likely still has many changes and optimizations coming. And thirdly, the developers who've leaked this information are in violation of non-disclosure agreements at Apple.
Developers who wanted access to the kit were required to pay a $500 access fee, agree to return the kit after one year—and agree not to publicly write about, review, share, or display the unit without Apple's prior written approval. At least eight developers so far seem not to have read the fine print, judging by the uploads to Geekbench's online leaderboard.
There is currently no way of knowing whether these leaks are deliberate or accidental. At Ars, we frequently get to benchmark hardware that isn't available to the general public and whose details are under embargo as well—and we can confirm that you need to pay close attention to what you're doing. Most modern benchmark utilities have an online leaderboard, with an "upload results" button baked right into the utility—and in some cases, they even upload by default unless you specifically force them not to.
Accidental or not, the leaks give us some additional information about the potential performance of the new Macs with Apple silicon, though nothing conclusive. The developer transition kits are equipped with what seems to be a variant of the A12Z SoC found in the latest iPad Pro models. These Geekbench database entries also report the virtual CPU as four-core, rather than eight—even though the A12Z as we know it in the iPad Pro is an octa-core CPU.
Four of the A12Z's cores are high-power fast cores, and the other four are low-power slow cores used to increase battery efficiency when running background tasks. This configuration is common in the ARM world but nearly unheard of in x86. So it's not too surprising that an x86 emulation would ignore the big/little configuration and report itself as a simpler four-core setup regardless of underlying reality.
These tests appear to have been run in Geekbench 5.2.0 for macOS x86 (64-bit)—meaning they were run in Rosetta, Apple's tool for emulating x86 Macs on ARM-based Apple silicon.
As for the results, the Apple silicon-equipped developer kits average 811 for single-threRead More – Source
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