小米:新款 CPU 单核性能比肩苹果,多核性能大幅领先。
Xiaomi: New CPU matches Apple cores single threaded, much faster multithreaded

原始链接: https://twitter.com/lemire/status/2091894299289874926

小米新款 Xring O3 处理器标志着移动计算领域的重大转变,其性能足以媲美苹果最新的芯片。在 Geekbench 测试中,该芯片单核得分为 3,945 分,多核得分为 15,221 分,展现出强劲的实力,尤其是在多线程任务处理方面表现卓越。 Xring O3 的架构凸显了明确的行业趋势:优先考虑大规模并行处理和缓存密度。该处理器配备了 44MB 缓存(超过了许多现代笔记本电脑的 CPU)和强大的 C1-Ultra 核心,专为高性能计算而设计。其架构极其宽泛,拥有 21 个执行端口,其中包括 6 个专用于 128 位 SIMD 操作的端口。此外,对 SME2 和 SVE2 的支持也强调了其在高级矩阵运算和人工智能加速方面的重点。 尽管苹果可能会很快推出其下一代处理器作为回应,但 Xring O3 已成为移动硬件领域的一个里程碑。通过将更多的算术单元和超大缓存集成到移动设备尺寸的芯片中,小米正在不断突破 ARM 架构芯片的性能极限,有效地拉近了移动设备与高端笔记本电脑之间的差距。

这篇 Hacker News 帖子讨论了小米新款 Xring O3 处理器。据报道,该芯片在单线程性能上与苹果上一代芯片不相上下,并展现出强劲的多线程能力。 讨论的核心要点包括: * **技术与来源**:该芯片采用 ARM 的 C1-Ultra 核心,并由台积电使用 3nm (N3P) 工艺制造。评论者指出,尽管表现出色,但这属于 ARM 设计的架构,而非“从零开始”的定制设计,因此与其他高端移动 SoC 并无本质区别。 * **性能与现实**:许多用户提醒,基准测试的“实验室”分数往往忽略了过热降频的问题。受限于功耗和发热,移动设备在实际使用中的表现通常达不到峰值跑分水平。 * **地缘政治**:讨论区因地缘政治争论而呈现明显的两极分化。部分用户认为,中国企业通过政府巨额投资和对工业工程的重视正在成功追赶;另一些用户则对安全性、供应链依赖以及中国工业实践的道德问题表示担忧。 * **市场影响**:观察人士认为,这是一个重大进展,它加剧了高通和联发科面临的竞争。如果软件生态系统能发展到支持 Android 以外的平台,移动芯片的市场格局可能会因此发生转变。
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原文

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.

Xiaomi’s Xring O3 delivers a massive performance leap, scoring 3,945 in Geekbench single-core and an unprecedented 15,221 in multi-core.

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