Chiplet Bandwidth Density Calculator
Estimate raw die-to-die bandwidth density from trace density, transfer rate, and bits carried per transfer. Bandwidth = traces/mm × GT/s/trace × bits/transfer ÷ 8000 in decimal TB/s/mm; encoding and protocol overhead are not deducted.
Description
Calculate raw chiplet edge bandwidth density from traces per millimeter, transfers per second per trace, and bits per transfer.
Estimate raw die-to-die bandwidth density from trace density, transfer rate, and bits carried per transfer. Bandwidth = traces/mm × GT/s/trace × bits/transfer ÷ 8000 in decimal TB/s/mm; encoding and protocol overhead are not deducted.
When to use Chiplet Bandwidth Density Calculator
- Calculate raw chiplet edge bandwidth density from traces per millimeter, transfers per second per trace, and bits per transfer.
- Compare fabrication or device scenarios while holding coefficients and unit conventions constant.
- Check a hand calculation before moving to a higher-fidelity process, circuit, or TCAD model.
How the calculation works
GT/s counts transfers, not bytes; a one-bit serial transfer requires division by eight when converting bit rate to byte rate.
bandwidth[TB/s/mm] = traces/mm · GT/s/trace · bits/transfer / 8000 Interpreting the result
GT/s counts transfers, not bytes; a one-bit serial transfer requires division by eight when converting bit rate to byte rate.
Assumptions and limitations
- The result is raw signaling capacity before encoding, framing, error correction, flow control, lane repair, and protocol overhead.
- Use parameters measured for the same material, geometry, temperature, and operating regime whenever the result informs engineering work.