极客湾Geekerwan
1 HN recommender · recommended in 3 months, 2024–2025
21:52 · 198K views · Oct 2, 2024
Geekerwan's Chinese-language review of Intel's Lunar Lake lightweight laptop chip, covering performance, perf-per-watt curves and battery life benchmarks. It tests whether x86 can compete on efficiency.
HN uses it as a benchmark source in debates over whether x86 can match Apple Silicon efficiency, particularly the Lunar Lake vs M3 comparison.
7 comments from Hacker News
There is an M-series competitor from Intel that was released last year, codename Lunar Lake. Here's a video about it. Skip to 4:55 for battery life benchmarks. this video
This seems mostly misinformed. 1) Apple Silicon outperforms all laptop CPUs in the same power envelope on 1T on industry-standard tests: it's not predominantly due to "optimizing their software stack". SPECint, SPECfp, Geekbench, Cinebench, etc. all show major improvements. 2) x86 also heavily relies on micro-ops to greatly improve performance. This is not a "penalty" in any sense. 3) x86 is now six-wide, eight-wide, or nine-wide (with asterisks) for decode width on all major Intel & AMD cores. The myth of x86 being stuck on four-wide has been long disproven. 4) Large buffers, L1, L2, L3, caches, etc. are not exclusive to any CPU microarchitecture. Anyone can increase them—the question is, how much does your core benefit from larger cache features? 5) Ryzen AI Max 300 (Strix Halo) gets nowhere near Apple on 1T perf / W and still loses on 1T perf. Strix Halo uses slower CPUs versus the beastly 9950X below: Fanless iPad M4 P-core SPEC2017 int, fp, geomean: 10.61, 15.58, 12.85 AMD 9950X (Zen5) SPEC2017 int, fp, geomean: 10.14, 15.18, 12.41 Intel 285K (Lion Cove) SPEC2017 int, fp, geomean: 9.81, 12.44, 11.05 Source: [LINK] , this video The 9950X & 285K eat 20W+ per core for that 1T perf; the M4 uses ~7W. Apple has a node advantage, but no node on Earth gives you 50% less power. There is no contest.
It's not the ISA. Modern Macbooks are power-efficient because they have: - RAM on package - PMIC power delivery - Better power management by OS Geekerwan investigated this a while ago, see: [LINK] [LINK] this video Intel and AMD have implemented these improvements with Lunar Lake and Strix Halo. You can buy an x86 laptop with Macbook-like efficiency right now if you know which SoCs to pick. edit: Correction. I looked at the die image of Strix Halo and thought it looked like it had on-package RAM. It does not. It doesn't use PMIC either. Lunar Lake is the only Apple M-series competitor on x86 at the moment.
I suspect the throttling behavior has to more do with the power settings used during testing or OEM tuning on specific models. this video In this video, they show the perf/watt curves at 8:30. And they show the on-battery vs on-wall performance at 18:35 across a wide variety of benchmarks, not just Geekbench. They used a Lenovo YOGA Air 15 on Window 11's "Balanced" power plan for their tests. The narrator specifically noted the Macbook-like on-battery performance.
It is likely the hardware effiency of their chips. Apple SoCs running industry-standard benchmarks still run very cool, yet still show dominant performance. The OS efficiency helps, but even under extreme stress tests like SPEC, the Apple SoCs dominate in perf & power. See Lunar Lake on TSMC N3B, 4+4, on-package DRAM versus the M3 on TSMC N3B, 4+4, on-package DRAM: this video The 258V (TSMC N3B) has a worse perf / W 1T curve than the Apple M1 (TSMC N5).