小米新CPU单核追平苹果，多核大幅领先
小米新CPU单核追平苹果，多核性能大幅领先
Daniel Lemire
丹尼尔·勒梅尔
@lemire
@lemire
Xiaomi is the Chinese tech giant. Their phones compete with iPhones. Their new CPU roughly matches Apple cores on single threaded tasks, and is much faster in multithreaded execution. Of course, Apple may soon announce their next processor, so this edge may not last long. And you may find it it difficult to find a phone with the next CPU (Xring O3). But the new Xiaomi processor is worth discussing further as it reveals an important trend. The chip has a lot of cache (44 MB in total). It is more than most laptop CPUs. If you have an Intel processor in your laptop, chances are good that you have less cache. The biggest cores on the the Xring O3 are the C1-Ultra. C1-Ultra really powerful cores. They support SME2 (Scalable Matrix Extension 2) for matrix/AI acceleration, SVE2 for data parallelism (SIMD). It is astonishingly wide, with 21 execution ports, six of which support SIMD operations (128 bits). This is more execution ports than you have on your Intel/AMD processor. The AMD Zen 5 has the upper hand because it can do 4x512-bit but 6x128-bit is the best you can do on an ARM chip as far as I know. So the trend is clear. We are getting cores that are massively parallel in terms of the number of execution units. We get better SIMD (more units) and many more units capable of doing arithmetic. This means that you can do many, many independent additions or multiplications per cycle. And much more cache. This is where all the transistors go.
小米是中国科技巨头。他们的手机与iPhone竞争。他们的新CPU在单线程任务上大致与苹果核心匹配，在多线程执行上则快得多。当然，苹果可能很快会宣布他们的下一代处理器，所以这一优势可能不会持续太久。而且你可能会发现很难找到搭载下一代CPU（Xring O3）的手机。但小米的新处理器值得进一步讨论，因为它揭示了一个重要趋势。该芯片拥有大量缓存（总计44 MB）。这比大多数笔记本电脑CPU的缓存都要多。如果你的笔记本电脑用的是Intel处理器，很可能你的缓存更少。Xring O3上最大的核心是C1-Ultra。C1-Ultra是真正强大的核心。它们支持SME2（可扩展矩阵扩展2）用于矩阵/AI加速，SVE2用于数据并行（SIMD）。它异常宽泛，拥有21个执行端口，其中六个支持SIMD操作（128位）。这比你Intel/AMD处理器上的执行端口还要多。AMD Zen 5占据优势，因为它能进行4x512位操作，但据我所知，6x128位是ARM芯片上能做到的最佳水平。所以趋势很明确。我们正在获得在执行单元数量上大规模并行的核心。我们得到更好的SIMD（更多单元）和更多能够进行算术运算的单元。这意味着每个周期你可以进行许多许多独立的加法或乘法运算。还有更多的缓存。这就是所有晶体管都去的地方。
Ice Universe
冰宇宙
@UniverseIce
@UniverseIce
12h
12小时
Xiaomi’s Xring O3 delivers a massive performance leap, scoring 3,945 in Geekbench single-core and an unprecedented 15,221 in multi-core.
小米的Xring O3带来了巨大的性能飞跃，Geekbench单核得分3,945，多核得分前所未有的15,221。
2:24 PM · Aug 24, 202622.8KViews
2026年8月24日下午2:24 · 22.8K次查看
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