Power consumption in factory state as summary
The 12.8 watts in idle are ok, whereby it fluctuates between 7 watts and up to 20 watts. With a second monitor, this quickly becomes 50 watts and more (peaks over 60 watts). Improvements are urgently needed here, especially since the PCIe does not always clock down properly, not even on a current Intel system. By the way, we can see very nicely that more power is consumed on average in WQHD than in UHD. However, that is deceptive because the FSR runs are also included in UHD. The max value from Horizon Zero Dawn shows how hard it can really get. The maximum possible TBP is not quite reached in gaming, but slightly exceeded in the stress test. A gaming version would behave similarly here, since I had estimated a total of 10 to 15 watts more for the TBP.
Load distribution between PCIe slot and PCIe sockets
The distribution of the power supply of the Radeon Pro W7800 shows that the card has been generously designed in terms of TBP and the performance of the rails. Thus, the mainboard slot is still quite good with a maximum of 1.9 amps. Thus, there is still a lot of room in this design on all rails.
All in all, AMD has solved the load distribution well here, which also leaves a lot of room for an RX 7800XT. While NVIDIA has almost completely stopped supplying via the PEG, AMD still uses this rail.
- 1 - Introduction, technical data and background
- 2 - Test system in the igor'sLAB MIFCOM-PC
- 3 - Gaming performance Full-HD (1920 x 1080)
- 4 - Gaming performance QHD (2560 x 1440)
- 5 - Gaming performance UHD (3840 x 2160)
- 6 - Power consumption and load balancing
- 7 - Transients and PSU recommendation
- 8 - Summary and conclusion
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