The video discusses the power requirements for running an MSI GeForce RTX 4090 graphics card. Contrary to the recommended 1000 watt power supply, the presenter successfully operates a top-spec gaming rig with an RTX 4090 using only a 550 watt power supply. Through various tests, including gaming and stress tests, it's demonstrated that even with overclocking, a 1000 watt power supply is not necessary. The presenter suggests that manufacturers may overstate power requirements to cover additional peripheral power needs or to avoid customer complaints. The video concludes that with careful tuning of power settings, it's possible to run high-end components on much lower wattage supplies than typically recommended.
Here are the key facts extracted from the text:
1. The recommended power budget for the GeForce RTX 4090 is 1000 watts.
2. The Nvidia PCAT is an inline power measurement device designed for GPUs.
3. The RTX 4090 requires four eight-pin PCI Express connections to function.
4. The RTX 4090 was tested with the game Cyberpunk 2077 at 4K with mostly high presets and ray tracing set to medium.
5. The GPU's power draw during the test was around 430-470 watts.
6. The total system power consumption during the test was around 600 watts.
7. The system was able to maintain a frame rate of around 50 FPS during the test.
8. The RTX 4090's power draw was compared to MSI's Combustor stress testing application.
9. The RTX 4090's power draw was found to be lower than expected, and it was determined that a 1000-watt power supply is not necessary to run the GPU.
10. The RTX 4090 was tested with a 850-watt power supply and found to perform identically to the 1000-watt power supply.
11. The system's performance was found to be identical with a 750-watt power supply as well.
12. The RTX 4090's power draw was found to be around 450 watts with a 550-watt power supply.
13. The system's performance was found to be stable with a 550-watt power supply, but with some minor reductions in performance.
14. The RTX 4090's power draw was found to be around 360 watts with a 550-watt power supply and a reduced power limit.
15. Reducing the CPU voltage by 0.15 volts was found to reduce the system's power consumption by around 20 watts.
16. The system's performance was found to be stable with a 650-watt power supply and a reduced power limit.
17. The RTX 4090's performance was found to be nearly identical to its stock performance with a 650-watt power supply and a reduced power limit.
18. Reducing the GPU's power limit was found to reduce the system's power consumption, but also reduced the system's performance.
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