What is the typical power output provided by a PCIe x16 slot by default?

The typical power output provided by a PCIe x16 slot by default is 75 watts. This specification is outlined in the PCI Express standard, where the x16 slots are designed to support high-performance graphics cards and other expansion cards that require more power.

This power delivery is essential for modern graphics cards and other devices that operate within that bandwidth, allowing for stable and sufficient power for peak performance. In contrast, while some configurations may vary or additional power connectors may be used to provide extra power to certain high-end GPUs, the standard output for a PCIe x16 connector is definitively 75 watts under typical operational conditions.