Pay for a second software stack only after its release qualifies — conditional result
$30,000 first-year surplus in the scenario; $5,500/month break-even gross saving; −$6,000 at $5,000/month.derived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | Port hours = 12 × 8 + 40 + 40 + 24 = 200 h. Initial port = 200 h × $150/h = $30,000. Annual sustaining = 20 h/month × 12 months × $150/h = $36,000. First-year surplus = 12 × $8,000 − $30,000 − $36,000 = $30,000. The first-year gross-saving threshold is ($30,000 + $36,000)/12 = $5,500/month. At $5,000/month the result is −$6,000. Benchmark the untouched portable baseline and tuned manifest separately; count the hours between them rather than calling the gap a ROCm tax. |
| As of | 2026-09 |
| Source | AMD ROCm documentation and compatibility guidance — method reference; guide-authored hypothetical scenario September 8, 2026. No supplier quote or test measurement. |
| Derivation | Port hours = 12 × 8 + 40 + 40 + 24 = 200 h. Initial port = 200 h × $150/h = $30,000. Annual sustaining = 20 h/month × 12 months × $150/h = $36,000. First-year surplus = 12 × $8,000 − $30,000 − $36,000 = $30,000. The first-year gross-saving threshold is ($30,000 + $36,000)/12 = $5,500/month. At $5,000/month the result is −$6,000. Benchmark the untouched portable baseline and tuned manifest separately; count the hours between them rather than calling the gap a ROCm tax. |
| Review | checking…review by 2027-03-08 · standard cadence |
| Recorded changes | last 2026-09-16 |
| Claim id | guide2-t29-7-9-result |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.