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Quadrans Muralis Profile picture
Quadrans Muralis
@QaM_Section31
Star Trek Online : 2012.2.13.~NOW Just Chatting (노가리 까기) NOTE: I'm NOT a tipster AT ALL!!! Live long and prosper MacBook Air 15 (M2, 2023, Starlight)
May 29, 2023 • 4 tweets • 1 min read
As Arm officially announced new CPU core architectures, here is concise summary of these.

#Cortex 1) Cortex-X4
- First tapeout: N3E
- +15% Perf vs. same power, or -40% power vs. same perf.
- Performance compared under SPECRate@2017
- Criteria: 2 MB L2 cache, 8 MB L3 cache, 100ns latency, at 3.4 GHz. Iso-process, Iso-frequency.
- IPC: +7~8% on Geekbench5/6.
Mar 16, 2023 • 16 tweets • 4 min read
In Nov 2021, Qualcomm announced Snapdragon 8 Gen 1. In 2022, Samsung announced Galaxy S22 series with SD8 Gen 1 equipped, and the chip was produced on Samsung 4LPX (=5LPP). But it was severely criticized due to high heat emitted and low performance retentivity for a long time. It was later revealed that the yield of 4LPX(=5LPP) and 4LPE was low. In 1Q 2022, it was estimated that the yield of 4LPE was around 35%, half of the value of TSMC's counterparts.