11/16/2022 at 5:41 p.m. by Norman Wittkopf – The power consumption of the new graphics card top models from AMD and Nvidia is now known to be out of the bag. Asus has therefore published updated power supply recommendations in connection with various CPUs.
Nvidia had officially recommended a power supply of at least 850 watts for the entire system for the presentation or market launch of the Geforce RTX 4090, with the total board power (TBP) of the high-end graphics card being estimated at 450 watts. AMD recommends an 800 watt power supply for the Radeon top model RX 7900 XTX with a TBP of 355 watts, which will be released in December.
Manufacturer Asus has now published an updated version of its recommendation overview for power supplies for its power supplies, in which all four announced or released cards from Nvidia’s and AMD’s new generation are taken into account in addition to older models. Nevertheless, various main processor series from AMD and Intel are also included in the recommendations as other power-hungry components in the PC.
850 bis 1.200 Watt
For setups with an Intel Core i5 or a Ryzen 5, an 850 watt power supply should be sufficient for the RTX 4090 and RX 7900 XTX, while 750 watts are recommended for the recently released RTX 4080 and AMD’s second flagship RX 7900 XT. For systems with Intel Core i7 or Ryzen 7 and Core i9 as well as Ryzen 9, the recommendations are correspondingly higher. Asus recommends at least 1,000 watts of power for the RTX 4090 and 850 watts to 1,000W for the RX 7900 XTX. In addition, there are also recommendations for Intel’s HEDT platforms and AMD’s Threadripper series: Both top cards should be paired with a power supply unit of at least 1,200 watts. For high-end processors with RTX 4080 and RX 7900 XT, 850 watts to 1,000 watts are recommended.
Radeon RX 7900 XTX and Geforce RTX 4090: Asus recommends a power supply with 850 to 1,200 watts (2) Source: Asus
Since the information on the power consumption of the new high-end graphics cards is no longer secret and Asus is known to sell and develop numerous custom designs based on each architecture, as well as suitable power supplies, the recommendations according to Videocardz.com are very accurate. Even if Asus does not explicitly mention it in the overview, RTX buyers should ideally use ATX 3.0 models with a native implementation of the 12VHPWR power connector for new power supplies, such as the ROG Loki series offered by Asus.
Source: ASUS (PDF)