The power consumption of the Radeon RX 9070 XT is significantly higher than that of the Radeon RX 7900 GRE. The RX 9070 XT has a Total Board Power (TBP) of 304 watts, which is part of AMD's RDNA 4 architecture and includes power for the GPU, memory, and other components[1][2]. In contrast, the RX 7900 GRE typically consumes around 270 watts under a full workload[3].
The higher power consumption of the RX 9070 XT is likely due to its more powerful specifications, including 64 Compute Units and a boost clock speed of up to 2970 MHz, compared to the RX 7900 GRE's lower compute performance[6][7]. Despite the higher power draw, the RX 9070 XT offers substantial performance improvements over the RX 7900 GRE, particularly in ray tracing workloads and at higher resolutions like 4K[6][8].
In terms of system requirements, the RX 9070 XT is recommended to be paired with a power supply unit of at least 750 watts, though some sources suggest even higher requirements[4][7]. This contrasts with the RX 7900 GRE, which generally requires less power and can operate with a lower wattage power supply. Overall, the RX 9070 XT's increased power consumption reflects its enhanced performance capabilities compared to the RX 7900 GRE.
Citations:[1] https://en.overclocking.com/rx-9070-xt-304w-power-consumption-and-performance-on-a-par-with-the-7900-xtx/
[2] https://www.corsair.com/us/en/explorer/gamer/gaming-pcs/amd-radeon-rx-9070-vs-rx-9070-xt-whats-the-difference/
[3] https://gamersnexus.net/gpus/amd-radeon-rx-7900-gre-gpu-review-benchmarks-vs-rx-7900-xt-7800-xt-rtx-4070-super
[4] https://www.igorslab.de/en/amd-radeon-rx-9070-xt-900w-power-supply-as-minimum-requirement/
[5] https://www.asrock.com/Graphics-Card/AMD/Radeon%20RX%209070%20XT%20Taichi%2016GB%20OC/
[6] https://www.tomshardware.com/tech-industry/amd-estimates-of-radeon-rx-9070-xt-performance-leaked-42-percent-66-percent-faster-than-radeon-rx-7900-gre
[7] https://www.techpowerup.com/333171/complete-specifications-of-amd-radeon-rx-9070-and-rx-9070-xt-leaked
[8] https://techsearchers.com/amd-rx-9070-xt-vs-rx-7900-gre-better-performance-tested/
[9] https://www.pcgamesn.com/amd/radeon-rx-9070-xt-power-specs-leak
[10] https://www.techradar.com/computing/gpu/amd-rx-9070-gpu-spec-and-benchmark-rumors-cast-fresh-doubt-on-power-usage-and-performance-but-i-wouldnt-worry-about-the-latter