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Graphics Cards

AMD GPU has high idle power with ultrawide display

troublesync_editorial
1mo ago
Performance
Environment

Environment

Radeon RX 7900 XT connected to a 3440x1440 144 Hz monitor.

What happens

What happens

Board power stays near 90 W on the desktop and memory clocks never downshift.

What I have tried

What I have tried

Closed background applications and performed a clean driver installation.

I would appreciate advice on how to identify the root cause without risking existing data or configuration.

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1 reply
0
emmahacks Answer
user
Posted 2w ago • 0 confirmations

I would test the likely cause before changing anything permanent.

Likely cause: The display timing requires a memory clock that remains at its maximum state.

What I would try: Create a reduced-blanking custom resolution or test 120 Hz, then verify idle clocks before changing any voltage settings.

After the change, reproduce the original scenario rather than assuming the first successful test fixed it.

erikethernet
user
Posted 2w ago

That explanation matches when the issue started. I will test the suggested change and check the logs again.

Showing 1 of 1 community responses
AI DIAGNOSTICS

Incident analysis

Updated 1mo ago• Trouble ID

Most likely causes

The display timing requires a memory clock that remains at its maximum state. 85%
A recent software, firmware or configuration change is exposing an existing compatibility issue. 41%

Summary

The reported behaviour is consistent with the display timing requires a memory clock that remains at its maximum state. The safest next step is to verify that hypothesis with a reversible test before making permanent configuration changes.

Suggested Fixes

Verify the likely cause
Create a reduced-blanking custom resolution or test 120 Hz, then verify idle clocks before changing any voltage settings.
Validate and monitor
Reproduce the issue once after the change, review relevant logs or metrics, and keep a rollback path until the system has remained stable.

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