After upgrading a server with additional graphics cards, it unexpectedly powers off. What is the most likely cause?

When a server unexpectedly powers off after the installation of additional graphics cards, a common underlying issue is often related to power supply capacity. Graphics cards can consume a significant amount of power, particularly high-performance models meant for demanding tasks such as gaming or graphics rendering. If the existing power supply unit (PSU) does not have sufficient wattage to support the server’s total power demand after adding the new cards, the system can become unstable and shut down as a protective measure against overloading.

In this scenario, the power supply may be unable to provide the extra amperage needed for the new components, leading to immediate shutdowns to prevent hardware damage. Upgrading the power supply to one with a higher capacity or ensuring the existing PSU meets the combined power requirements of all installed components would be crucial in addressing this issue.