Woordje uitleg over het nieuwe power spike management:
NVIDIA Details new Power Spike Management

NVIDIA Details new Power Spike Management

While the RTX 4090 operates at 450 W by default, the power delivery capability allows you to increase the power limit up to 600 W for overclocking. The card features a 23-phase VRM (20-phase GPU + 3-phase memory). NVIDIA claims that it has re-architected its VRM to offer superior transient voltage management. This is specifically to minimize the kind of spikes or excursions we've seen with previous-gen high-end graphics cards such as the RTX 3090 Ti and Radeon RX 6900 Series. These spikes often causes spontaneous shutdowns on some power supplies, even if they had a much higher wattage rating than required.
In the chart above, NVIDIA shows how current spikes get mitigated by their new VRM design, which uses a PID controller feedback loop. While the RTX 3090 bounces up and down, the RTX 4090 stays relatively stable, and just follows the general trend of the current loading pattern thanks to a 10x improvement in power management response time. It's also worth pointing out that the peak power current spike on the RTX 3090 is higher than the RTX 4090, even though the RTX 3090 is rated 100 W lower than the RTX 4090 (350 W vs 450 W).