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Power transients from high-end NVIDIA and AMD graphics cards can cause PC shutdowns. We explain what they are, measure them in the 30 series, and discuss their impact on the upcoming NVIDIA RTX 40 series GPUs (e.g. the rumored RTX 4080 and RTX 4090).

NVIDIA’s RTX 3090 Ti consumes more power than any consumer GPU we’ve ever seen. The power draw of this card prompted investigation into how much power 3090s, 3080s, and even the venerable 1080 Ti consume. Transient power spikes from these cards can ask for 2x and more than the normal max power target. PSUs like the Seasonic PRIME line and the EVGA GA line might have trouble with these transients. We explain what these transient spikes are and how they impact PC building, and particularly, how much you need to plan ahead for future GPU purchases if this problem doesn’t get addressed by NVIDIA and AMD (or the PSU manufacturers) adequately.

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TIMESTAMPS

00:00 - GPU Power Requirements
01:30 - A Concerning Future
04:00 - The Issue
04:48 - The Problem with Average Power Consumption
06:15 - Overhauling Test Processes & SFF PSU Risk
06:47 - NVIDIA or PSU Makers To Blame?
07:52 - What Transients Actually Are
09:39 - Transient Load vs. Response
10:12 - GPU Power Draw is Changing
11:20 - How Power Overhead Works
14:14 - Over 40 Combinations of Hardware & Software
16:05 - Test Data
18:30 - Investigating the Power Supplies
19:17 - Why Small Form Factor is a Problem
20:05 - GN's Power Validation Setup
23:44 - Conclusion & Reality
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Host, Copy Editor: Steve Burke
Writing, Testing: Patrick Stone
Video & Production: Andrew Coleman
Additional Video Work: Keegan Gallick

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