cpu-performance
Latest stories covering cpu-performance, with summaries and links to related coverage.
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Xiaomi: New CPU matches Apple cores single threaded, much faster multithreaded
news
1 min read
Xiaomi’s Xring O3 processor is presented as a mobile chip with C1-Ultra performance cores, 44 MB of total cache, and support for Arm’s SME2 matrix-extension instructions and SVE2 SIMD instructions. Daniel Lemire says the chip roughly matches Apple cores in single-threaded tasks while delivering substantially higher multithreaded performance. He cites Geekbench scores of 3,945 for single-core performance and 15,221 for multi-core performance. Lemire describes the C1-Ultra as a 21-port core, including six ports that support 128-bit SIMD operations. He says this exceeds the execution-port count of typical Intel and AMD processors, while noting that AMD’s Zen 5 can execute four 512-bit operations. Lemire characterizes six 128-bit SIMD units as the current upper limit for Arm chips to his knowledge. He identifies a trend toward wider processor cores with more arithmetic and SIMD execution units, enabling more independent additions and multiplications per clock cycle. He also highlights the chip’s cache capacity as larger than that of most laptop CPUs. Lemire says Apple could soon announce a newer processor and that phones using the Xring O3 may be difficult to obtain.
Geekbench 7
tool
3 min read
Geekbench 7 features new and improved workloads for measuring CPU and GPU performance, including media workloads for audio and video encoding, decoding, and processing. It is available for download on Android, iOS, Windows, macOS, and Linux.
CPUs Aren't Dead. Gemma2B Out Scored GPT-3.5 Turbo on Test That Made It Famous
research
22 min read
Gemma 2B achieved a score of approximately 8.0 on the MT-Bench, surpassing GPT-3.5 Turbo's score of 7.94. This model is 87 times smaller and can run on a laptop CPU without the need for a GPU.