Superposition Benchmark Key Top May 2026

Technical Report: Superposition Benchmark of Mechanical Keyboard Key Tops

Report No.: SBKT-2025-04
Date: April 19, 2026
Author: Engineering Test Lab

Step 3: Key Top Ranking (The Leaderboard)

Based on aggregated data from the superposition benchmark key top community, here is how popular caps perform:

| Key Top Profile | Material | Superposition Score (Latency) | Wobble Index | Best Use Case | | :--- | :--- | :--- | :--- | :--- | | Cherry OEM | PBT | 92/100 | Low | General Typing | | SA | ABS | 78/100 | High (2.1°) | Aesthetic/Retro | | XDA | PBT | 96/100 | Very Low | Fast Gaming | | MT3 | PBT | 85/100 | Moderate | Ergonomic | | Low Profile (LAM) | ABS | 99/100 | Minimal | Esports |

The "Stress" Factor

When you run the Key Top scene, your GPU stops worrying about loading textures from disk (VRAM bandwidth) and focuses entirely on Shading Units and Ray Tracing cores (if using DirectX 12 or OpenGL mode). It creates a "worst-case scenario" for power draw. superposition benchmark key top

Key observation: Many users find that their GPU runs hotter and draws more wattage during the Key Top scene than during any 4K gaming session. This is because the workload is parallelized to 100% utilization without pipeline stalls typically caused by game logic.

3. Methodology: Superposition Benchmark

A superposition benchmark applies two or more force vectors simultaneously to different points on the key top, summing their effects. This mimics real-world typing where a finger may strike off-center while another finger rests on the same key (e.g., chorded shortcuts).

Test loads:

  • F1 = 0.6 N at key center (control)
  • F2 = 0.4 N at top-left edge
  • F3 = 0.3 N at bottom-right edge

Sequence:

  1. Single force (F1 only) → baseline
  2. Superposition (F1 + F2)
  3. Superposition (F1 + F2 + F3)

The Methodology: Running Your Own Superposition Benchmark Key Top Test

If you want to perform a superposition benchmark key top analysis at home, you need three tools: a high-speed camera (240fps+), a digital force gauge, and a linear switch (Cherry MX Red or equivalent).

3. The Theoretical Foundation (The Helpful Background)

Paper: A Mathematical Framework for Transformer Circuits Authors: Elhage et al. (Anthropic) Link: Transformer Circuits Thread F1 = 0

  • Why it matters: To understand why superposition matters, you must understand the "circuits" framework. This paper establishes the "Key" of how to analyze models (OV circuits and QK circuits). Superposition becomes a problem because it makes these circuits non-linear and hard to interpret.

1. The "Bible" of Superposition (The Key Paper)

Paper: Toy Models of Superposition Authors: Nelson Elhage, Tristan Hume, Catherine Olsson, Nicholas Schiefer, et al. (Anthropic) Link: arXiv:2210.01890

  • Why it is the top benchmark: This is the definitive paper that established superposition as a rigorous field of study. Before this, superposition was largely a theoretical conjecture.
  • Key Contributions:
    • The Benchmark Setup: They created a simplified "toy model" (a linear autoencoder) to isolate the superposition phenomenon. This serves as the standard benchmark environment for testing how features are stored.
    • Phase Transitions: They identified that models go through distinct phases (e.g., from storing features individually to storing them in superposition) based on the ratio of features to dimensions.
    • Polysemanticity: They demonstrated how single neurons can represent multiple unrelated features, solving the "superposition" puzzle by showing it is a result of compressed storage.

Issue C: Windows 11 Virtualization (VBS)

Memory Integrity (Core Isolation) adds a latency tax of 10-15% in synthetic micro-benchmarks like Key Top.

  • Fix: Search "Core Isolation" > Turn off "Memory Integrity" > Reboot. This is often the culprit for "mysteriously low" scores.

2. Equipment & Setup

  • Test device: Universal key switch tester (linear switch, 45g actuation force)
  • Key top sample: OEM profile, ABS plastic, 1.2 mm thickness at stem
  • Load cells: 3x (positions: center, NW corner, SE corner)
  • Displacement sensor: Laser, 0.001 mm resolution
  • Software: Superposition Load Simulator v2.1
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