RTX 5090 Power Analysis: Up to 901W Peak

Specialists from Igor's Lab conducted an in-depth analysis of the video card's power consumption NVIDIA GeForce RTX 5090, including its peak power within the ATX 3.1 specification. This test is extremely important for those using older ATX v2.51 power supplies, as they may encounter voltage overloads.

According to the tests, the RTX 5090 demonstrates the following peak power consumption figures:

• 627,5 W (10–20 ms);
• 738,2 W (5–10 ms);
• 823,6 W (1–5 ms);
• 901,1 W (< 1 ms).

These power surges are within the ATX 3.1 specification, which allows for deviations of up to 200% of rated power (1200 W) for a period of less than 1 ms. Modern power supplies that comply with this standard will be able to handle such loads without problems.

However, users of older ATX v2.51 power supplies (mid-2010s) may encounter activation voltage overload protection (Over Voltage Protection). To operate the RTX 5090 in such systems, an adapter is provided that converts four 8-pin PCIe connectors into a modern 12V2x6. However, the stability of operation on outdated equipment remains questionable.

RTX 5090 owners should make sure their power supply meets ATX 3.1 standards. Modern solutions, even those with power below 1200W, will be able to support Peak card loads without risk of damage or shutdown.