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Sep 26, 2025
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fix(guidelines): update bits and bytes guidance #5572

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fix(guidelines): update bits and bytes guidance
RoRoJ Sep 25, 2025
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Update pages/guidelines.mdx
RoRoJ Sep 26, 2025
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24 changes: 15 additions & 9 deletions pages/guidelines.mdx
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Expand Up @@ -378,17 +378,23 @@ Use the [Oxford comma](https://en.wikipedia.org/wiki/Serial_comma) (also known a

### Bits and bytes

- Add a space between the bits/bytes abbreviation and the number, e.g. `100 MB`, `1 Gbps`
- Add a space between the bits/bytes abbreviation and the number, e.g. `100 MB`, `1 Gbps`.
- Use the following abbreviations:

| Term | Abbreviation | Example |
| --------------------- | ------------------|----------------------------------------- |
| megabyte | MB | Memory: 100 MB |
| gigabyte | MB | Memory: 1 GB |
| gigabit | none | Connectivity; up to 10 gigabit |
| gigabits per second | Gbps | Bandwidth: 1 Gbps |
| megabits per second | Mbps | Bandwidth: 100 Mbps |
| gigabit-seconds | GB-s | Storage: 1 GB-s |
| Abbreviation | Unit | Used for | Example |
|------------------|--------------------------------|--------------------------------------------|--------------------------------------|
| MB, GB, TB | Megabyte / Gigabyte / Terabyte | Storage capacity, RAM, VRAM, disk size | Storage: 32 GB |
| MiB, GiB, TiB | Mebibyte / Gibibyte / Tebibyte | RAM / memory in binary multiples where technical precision is important | RAM: 512 MiB |
| Mbps, Gbps | Megabit per second / Gigabit per second | Network bandwidth (bits per second) | Bandwidth: up to 10 Gbps |
| MB-s, GB-s | Megabyte seconds / Gigabyte seconds | Cumulative data transfer/consumption over time | Memory consumption: €0.10 per 100 000 GB-s |

<Message type="note">
GB vs GiB is an SI vs binary distinction:
- GB = 10⁹ bytes = 1,000,000,000 bytes
- GiB = 2³⁰ bytes = 1,073,741,824 bytes
<br/><br/>
Use GiB/MiB for memory in contexts where technical precision and binary vs decimal distinction is critical. In other contexts, GB/MB may be appropriate for memory.
</Message>

## Wording and vocabulary

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