ASUS recommends 850W+ power supplies for GeForce RTX 4090/Radeon RX 7900 XTX systems

AMD Radeon RX 7900 XTX or GeForce RTX 4090 needs at least 850W of power

Both GPU vendors have now announced and partially released their high-end graphics cards based on the latest architecture.

ASUS has updated its power supply recommendation chart for NVIDIA Ada Lovelace and AMD RDNA3 series GPUs, all four cards so far. Since none of this information is secret anymore, and ASUS actively sells or develops custom designs based on each architecture, the recommendations are very specific.

NVIDIA has officially recommended a power supply of at least 850W for its RTX 4090 GPU, the current series flagship. AMD’s recommendation is lower, the company believes an 800W PSU should be sufficient. However, PSU recommendations should always consider other components, in this case the CPU is the most power-hungry component.

For mainstream configurations with Intel Core i5 or Ryzen 5, the 850W PSU should be fine for RTX 4090/7900XTX GPUs, while 750W should be powerful enough for RTX 4080 and RX 7900 XT cards. However, these recommendations are higher for Intel Core i7/Ryzen7 and Core i9/Ryzen 9 systems. For such systems, ASUS recommends at least 1000W of power for RTX 4090 and 850W to 1000W PSU for Radeon XTX.

Recommended power supplies for GeForce RTX 40/Radeon RX 7000 GPUs, Source: ASUS

The company also shares recommendations for the Intel HEDT and AMD Threadripper series. Here, both cards should be paired with at least a 1200W power supply. Meanwhile, the RTX 4080 and RX 7900 XT cards should both work with 750W and 850W power supplies, with the latter being an option recommended even for high-end systems.

Although not covered in the document, the RTX 40 series features the new 16-pin PCIe Gen5 power connector. That said, it would make sense to look at ATX 3.0 power supplies with native implementations of 12VHPWR cables, which ASUS offers with its ROG Loki series.

Neither AMD nor NVIDIA have confirmed the rest of their new lineups, so no further recommendations have been made.

Source: ASUS (PDF) via @momomo_us

Rosemary C. Kearney