750W for RTX 5080 Super needs a full-build check, not a simple yes. Review GPU guidance, CPU draw, transient load, connectors, PSU quality, and upgrade plans before deciding.
Power-supply sizing for a RTX 5080 Super rig is where a lot of SA builders quietly overspend or dangerously underspend. Read this with the 750W question specifically front of mind.
A 750W unit can technically boot a RTX 5080 Super system but leaves almost no margin against transient spikes near 600W, so it is risky for sustained loads or any overclock. Step up to a 850W 80+ Gold ATX 3.1 supply for safe daily use. Read this with the 750W question specifically front of mind.
If you plan to overclock the RTX 5080 Super or its CPU, size up rather than down so the supply is not pinned at its limit. A 850W unit also leaves room to keep the PSU through a future GPU generation, which saves a full replacement later. This is where the 750W question specifically changes the calculation.
The RTX 5080 Super pulls roughly 400W on its own, and a full build with CPU, RAM, drives and fans lands near 475W under typical gaming load. The figure that catches people out is the millisecond power spike: this card shows transient spikes near 600W, which a smaller supply may read as a fault and shut down. All of this is judged against the 750W question specifically.
ATX 3.1 units are designed to ride out the exact transient spikes modern GPUs produce, and they ship with a native 12V-2x6 connector so you skip the adapter octopus. For a RTX 5080 Super build, that connector and the better spike tolerance are worth more than a slightly higher 80+ rating. None of it is generic; it is sized for the 750W question specifically.
A 750W unit can technically boot a RTX 5080 Super system but leaves almost no margin against transient spikes near 600W, so it is risky for sustained loads or any overclock. The deciding factor is transient spike headroom, not just the average wattage.
A 850W 80+ Gold ATX 3.1 unit is the sweet spot. It covers the roughly 475W typical draw plus spikes with comfortable margin.
It is strongly recommended. ATX 3.1 handles the card transient spikes near 600W and provides a native 12V-2x6 cable, avoiding adapters.
For a RTX 5080 Super, target a 850W 80+ Gold ATX 3.1 unit so spikes near 625W never trip protection mid-game. That holds true for the 750W question specifically more than most.
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