Two local CSV files

Change the setup.
Check the difference.

Compare Run B against Run A after the same watched workload. Both files stay here. A mismatch shows no difference.

Owner comparison. Not shop proof, a safety limit, or proof that one setup caused the change.

Matched or nothing

Same rig. Same work.

Keep the exact cards, slots, case, direction, workload, and power setting. Change only the cooling setup you want to inspect.

No customer name, email, order number, UUID, or serial number. PCI bus ID is not a physical position.

Exact hardware set Same workload and power setting Airflow direction Everything else matched

Run A

Cooling setupAmbient CWatched loadChoose Run A CSVOr paste Run A

Run B

Cooling setupAmbient CWatched loadChoose Run B CSVOr paste Run B

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Comparison gates

Same

Same cards, slots, case, work, power, and direction.

3 C

More ambient drift blocks the comparison.

Power or load drift blocks the difference.

Stop

A physical warning ends the comparison.

Owner evidence only

NVIDIA documents the CSV fields and warns that support can vary. Unsupported or changed output fails closed. Read the NVIDIA reference. See every comparison gate.