| Scenario | Intersection Observer | React Window |
|---|---|---|
| 1,000 items | ~1.0–1.5 MB | ~0.5–1.5 MB (constant) |
| 10,000 items | ~10–15 MB | ~0.5–1.5 MB |
| 100,000 items | ~100–150 MB | ~0.5–1.5 MB |
Note: These are approximate metrics based on typical DOM structures. Actual memory usage may vary depending on the browser, device, and item complexity.