Decimal is what storage manufacturers and SI use. Binary is what most operating systems report. The gap grows with size — 2.4% at KB, 10% at TB.
| GB | MB | MB | GB |
|---|---|---|---|
| 1 | 1000 | 1000 | 1 |
| 2 | 2000 | 2000 | 2 |
| 4 | 4000 | 4000 | 4 |
| 8 | 8000 | 8000 | 8 |
| 16 | 16000 | 16000 | 16 |
| 32 | 32000 | 32000 | 32 |
| 64 | 64000 | 64000 | 64 |
| 128 | 128000 | 128000 | 128 |