Externally balanced P8 energy measurement
P8 preserves its confirmed throughput gain while remaining energy-noninferior when every header receives perfectly balanced external run order.
Diagnostic work, exact algebra and local capabilities are not treated as end-to-end mining advantage.
What was tested?
P8 preserves its confirmed throughput gain while remaining energy-noninferior when every header receives perfectly balanced external run order.
Why the test is meaningful
Power integration over short processes is noisy; pairing and equal ABBA→BAAB / BAAB→ABBA exposure remove positional confounding but cannot remove telemetry resolution error.
R_E=(J/hash)_P8/(J/hash)_P1noninferiority: CI95_upper(R_E)≤1.003external order balance=2 ABBA→BAAB+2 BAAB→ABBA per headerHow it was tested
Run four cycles per header, 128 total processes and 100 Hz NVML sampling with frozen exact P1/P8 binaries; audit B32, sample count and temperature.
What happened
P8 retained 1.003033× kernel and 1.002749× process speed. Energy/hash was 0.999959, but only 2/4 headers passed and CI95 was 0.989204–1.010830. Runs had 137–141 samples and reached at most 66°C.
Exactness and statistical controls
External position was exactly balanced and SHA-256d/B32 checks passed. The wide interval is therefore retained as measurement uncertainty, not averaged into a favorable claim.
What the result means
Throughput, exactness and thermal safety remain confirmed; energy noninferiority is unresolved. The next test must use the GPU cumulative energy counter.
Limitations
- 100 Hz integration is low-resolution for ~2.2 s processes.
- Energy passed on only two of four headers.
- The result is local to one RTX 5080 and frozen binaries.
Evidence trail
Use the sealed P1/P8 binaries, four balanced cycles per header, identical work and independent B32 verification; compare with direct cumulative-energy measurement.
Canonical variants
CANONICAL-EXP-152PREREGISTERED-CAMPAIGNSEALED-AUDITSource: internally audited canonical reports. Local filesystem structure, private headers and operational identifiers are excluded from publication.