GeForce RTX 5090 can consume up to 901 W, but not for long
The Igor's Lab portal conducted an in-depth analysis of the GeForce RTX 5090's power subsystem, including an assessment of the new model's peak power indicators within the tolerances of the ATX 3.1 specification. This analysis can be especially useful for those who still use old ATX v2.51 standard power supplies and plan to connect the GeForce RTX 5090 using the included power adapter from four 8-pin connectors to one 12+4-pin 12V-2×6 connector.
The peak power analysis of the GeForce RTX 5090 conducted by Igor's Lab showed that the graphics card is capable of power surges:
up to 627.5 W for 10 ms to 20 ms;
up to 738.2 W for 5 ms to 10 ms;
up to 823.6 W for 1 ms to 5 ms;
up to 901.1 W for peaks lasting less than 1 ms.
The power deviation from the nominal value represents a short-term increase in power consumption beyond the continuous power supply limit through the graphics card connector. In the case of the RTX 5090, the limit is 600 W, which is converted by the adapter from four 150 W PCIe 8-pin output lines into one 12V-2×6 input line. Fortunately, as Igor's Lab analysis shows, the peak power surges of the GeForce RTX 5090 up to 901.1 W for durations of less than 1 ms are within the permissible power deviations up to 200% (1200 W) provided by the ATX 3.1 power standard.
Any ATX 3.1 standard power supply, even with a declared power of less than 1200 W, should withstand such short-term peak power surges. However, a problem may arise with older ATX v2.51 standard power supply models (adopted in the mid-2010s). In this case, significant power deviations may cause an overcurrent protection (OCP) trigger.
The Igor's Lab portal conducted an in-depth analysis of the GeForce RTX 5090's power subsystem, including an assessment of the new model's peak power indicators within the tolerances of the ATX 3.1 specification. This analysis can be especially useful for those who still use old ATX v2.51 standard power supplies and plan to connect the GeForce RTX 5090 using the included power adapter from four 8-pin connectors to one 12+4-pin 12V-2×6 connector.
The peak power analysis of the GeForce RTX 5090 conducted by Igor's Lab showed that the graphics card is capable of power surges:
up to 627.5 W for 10 ms to 20 ms;
up to 738.2 W for 5 ms to 10 ms;
up to 823.6 W for 1 ms to 5 ms;
up to 901.1 W for peaks lasting less than 1 ms.
The power deviation from the nominal value represents a short-term increase in power consumption beyond the continuous power supply limit through the graphics card connector. In the case of the RTX 5090, the limit is 600 W, which is converted by the adapter from four 150 W PCIe 8-pin output lines into one 12V-2×6 input line. Fortunately, as Igor's Lab analysis shows, the peak power surges of the GeForce RTX 5090 up to 901.1 W for durations of less than 1 ms are within the permissible power deviations up to 200% (1200 W) provided by the ATX 3.1 power standard.
Any ATX 3.1 standard power supply, even with a declared power of less than 1200 W, should withstand such short-term peak power surges. However, a problem may arise with older ATX v2.51 standard power supply models (adopted in the mid-2010s). In this case, significant power deviations may cause an overcurrent protection (OCP) trigger.
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