DDR3 4Gb annual spot reference
model-estimateOfficial annual-average spot-price reference · Native year frequency · Latest observed: 2025 · Evaluated: 2026-09-09 UTC
Selected model: no change · 13 observations · latest vintage retrospective
| Period | Estimate | Empirical range | Horizon residuals | Output type |
|---|---|---|---|---|
| 2026 | 1.74 | 0.84–2.76 | 6 | Current-period estimate |
Compare chronological model-selection errors
| Candidate | Holdouts | MAE | RMSE | MAPE |
|---|---|---|---|---|
| no change | 6 | 0.69 | 0.82 | 40.28% |
| recent log drift | 6 | 0.69 | 0.83 | 39.15% |
| damped log trend | 6 | 0.69 | 0.83 | 39.15% |
Backtest uses the latest available vintage because publication dates were not supplied; it is retrospective, not a real-time backtest. Model selection uses chronological training holdouts and is not independent validation. Empirical 10th–90th percentile bands are horizon-specific but use fewer than ten matching residuals and are limited-sample indicators, not confidence guarantees.
Input observations and source lineage
| Period | Observed value | Published | Source |
|---|---|---|---|
| 2013 | 3.40 | 2026-06-10 | Official source ↗ |
| 2014 | 4.00 | 2026-06-10 | Official source ↗ |
| 2015 | 2.60 | 2026-06-10 | Official source ↗ |
| 2016 | 1.90 | 2026-06-10 | Official source ↗ |
| 2017 | 3.20 | 2026-06-10 | Official source ↗ |
| 2018 | 3.30 | 2026-06-10 | Official source ↗ |
| 2019 | 1.80 | 2026-06-10 | Official source ↗ |
| 2020 | 1.60 | 2026-06-10 | Official source ↗ |
| 2021 | 2.90 | 2026-06-10 | Official source ↗ |
| 2022 | 2.20 | 2026-06-10 | Official source ↗ |
| 2023 | 1.10 | 2026-06-10 | Official source ↗ |
| 2024 | 1.00 | 2026-06-10 | Official source ↗ |
| 2025 | 1.74 | 2026-06-10 | Official source ↗ |