Mebibit per second to Gibibyte per second
Mibps
GiB/s
Conversion History
| Conversion | Reuse | Delete |
|---|---|---|
| No conversion history to show. | ||
Quick Reference Table (Mebibit per second to Gibibyte per second)
| Mebibit per second (Mibps) | Gibibyte per second (GiB/s) |
|---|---|
| 1 | 0.0001220703125 |
| 10 | 0.001220703125 |
| 100 | 0.01220703125 |
| 953 | 0.1163330078125 |
| 1,000 | 0.1220703125 |
| 9,537 | 1.1641845703125 |
About Mebibit per second (Mibps)
A mebibit per second (Mibps) equals 1,048,576 bits per second — the binary IEC equivalent of megabit per second. It is approximately 4.9% larger than 1 Mbps. Mibps appears in network performance specifications written to IEC standards, and in operating system tools on Linux and some Unix variants that apply binary prefixes strictly. When a Linux system reports "ethtool: speed 100MiB/s", this distinction from 100 MB/s (decimal) matters in precise bandwidth budgeting.
A 100 Mibps figure represents 104.86 Mbps in decimal — about 5% more data. Network engineers use Mibps when exact binary calculations are required for buffer sizing.
About Gibibyte per second (GiB/s)
A gibibyte per second (GiB/s) equals 1,073,741,824 bytes per second and is used in high-performance storage and memory bandwidth measurements when binary precision is required. GPU memory bandwidth figures in technical documentation sometimes appear in GiB/s — an NVIDIA RTX 4090 features 1,008 GiB/s of GDDR6X memory bandwidth. NVMe SSD sequential read speeds are often reported as both GB/s (decimal) and GiB/s (binary) in reviews and datasheets.
The NVIDIA RTX 4090 GPU has 1,008 GiB/s of memory bandwidth (~1,082 GB/s in decimal). DDR5-6400 dual-channel memory provides about 100 GiB/s.
Mebibit per second – Frequently Asked Questions
When would I encounter mebibits instead of megabits?
Mainly in Linux system tools, IEC-compliant technical specifications, and some enterprise storage documentation. The iperf3 network testing tool can report in Mibps if configured to use binary units. Most consumer-facing software and ISPs use megabits exclusively.
How do I convert Mibps to Mbps?
Multiply by 1.048576. So 100 Mibps = 104.86 Mbps. To go from Mbps to Mibps, divide by 1.048576. At small values the difference is negligible, but at gigabit scales it can mean a meaningful amount of data.
Why does Linux sometimes use binary units for networking?
Linux kernel developers historically followed IEC recommendations to use binary prefixes where applicable. Some tools like dd and rsync default to binary (MiB/s) for disk operations. However, network-facing tools like ethtool and ip still use decimal Mbps because that is what the hardware reports.
Does the 5% difference between Mibps and Mbps matter in practice?
For casual use, no. For capacity planning and SLA compliance, yes. If a contract guarantees 100 Mibps and the provider measures in Mbps, the customer might get 100 Mbps (only 95.4 Mibps) and technically be short-changed. Data center SLAs should specify which unit system applies.
Is my ISP cheating me by using megabits instead of mebibits?
No — ISPs legitimately use decimal megabits because Ethernet and fiber standards are decimal. A "100 Mbps" plan genuinely delivers 100,000,000 bits per second. The confusion arises only when comparing with binary-unit tools. ISPs are not hiding anything; the two systems just coexist awkwardly.
Gibibyte per second – Frequently Asked Questions
Why do GPU specs sometimes use GiB/s instead of GB/s?
GPU memory is addressed in binary (power-of-2 bus widths like 256-bit or 384-bit), so binary units naturally describe the actual hardware capability. Some vendors use GiB/s to be precise, while marketing materials prefer the larger-sounding GB/s number. The RTX 4090's 1,008 GiB/s is 1,082 GB/s — the latter sounds faster.
How much GiB/s bandwidth does DDR5 RAM provide?
DDR5-6000 in dual-channel mode provides about 93 GiB/s (100 GB/s). Quad-channel DDR5 on workstation platforms doubles this to ~186 GiB/s. The actual usable bandwidth depends on memory access patterns — random access achieves far less than sequential streaming.
What is the difference between memory bandwidth and storage bandwidth?
Memory bandwidth (50–100+ GiB/s for DDR5) measures how fast the CPU can read/write RAM. Storage bandwidth (3–14 GiB/s for NVMe SSDs) measures persistent data transfer. Memory is 10–30× faster because DRAM has nanosecond latency while NAND flash has microsecond latency. They serve different roles in the data hierarchy.
Can I measure GiB/s bandwidth on my own system?
Yes. For memory bandwidth, run a STREAM benchmark (available for Linux and Windows). For storage, use fio or CrystalDiskMark. GPU memory bandwidth can be tested with gpu-burn or vendor-provided tools. All will report in either GiB/s or GB/s depending on the tool — check which one.
At what GiB/s does data transfer become limited by physics?
Electrical signalling on copper traces maxes out around 112 Gbps (about 13 GiB/s) per lane with current technology. Beyond that, optics take over — silicon photonics interconnects can push individual channels to 200+ Gbps. The physical speed of light in fiber is not the limit; it is the modulation and detection electronics.