Power consumption and efficiency by resolution
I don’t know what AMD was thinking with this card and Sapphire as a board partner also remains an eternal mystery to me with its “factory OC”. For around five to eight percent more performance, the RX 7900 GRE requires almost 300 watts for the entire card, which means around 18 percent more. The small increase in performance is not only expensive, but also destroys the performance with announcement. The GRE doesn’t convert the extra power into performance, even though the theoretical advantage is there thanks to the 33% more shaders. So many more computing units, which still have to be clocked very high in order to get a head start at all, simply leave no other conclusion than that something has been designed here that doesn’t work optimally. Especially as the trimmed Infinity cache together with the slower memory were probably just too much of a bad thing.
Yes, you can also use the “Silent BIOS” and reduce the power consumption to approx. 270 watts. But then, with a bit of bad luck, you lose even more clock speed due to the card getting too hot in the closed housing and the bottom line is not really any better. If you really want to take a closer look at the card, you’ll have to “optimize” the default BIOS manually with trial and error in the Radeon software; you’ll certainly be able to achieve some relief, but this will vary greatly from card to card. For example, my Pulse, which arrived too late, manages almost 80 MHz more with similar OC settings, while the Nitro + is already crashing. GPU lottery in the salvage lockout zone. Whereby you don’t notice the few FPS more or less anyway. But nobody can ask a tester to first laboriously optimize the respective card by hand before testing it. This cannot and must not be generalized
Power consumption in factory settings as a summary
The approximately 24 watts in idle mode have improved, but are still quite high, fluctuating between 12 watts and up to 34 watts. With a second monitor, this quickly becomes 50 watts and more (peaks over 65 watts). The driver still urgently needs to be improved here, especially as the PCIe does not always clock down correctly, not even on a current Intel system. Incidentally, we can see very clearly that almost the full TBP is utilized from UHD onwards and even the Torture Loop barely increases. AMD’s new implementation of telemetry for the entire card has a very limiting effect here. Unfortunately, it is no longer possible or allowed to intervene significantly. In both directions, by the way, because undervolting is now obsolete.
Load distribution between the PCIe slot and the PCIe sockets
The distribution of the power supply shows that the card still has reserves in terms of TBP and the performance of the rails. While the two 8-pin connectors are not fully utilized, the motherboard slot is also well in the running with up to 2.2 amps. So there is still room for an OC, but do you want to or can you?
All in all, AMD has solved the load distribution quite well here and I have the link to the basic article on AMD’s new telemetry for anyone who is curious:
- 1 - Introduction, technical data and technology
- 2 - Test s4etup and methods
- 3 - Teardown: PCB and components
- 4 - Teardown: cooler and cleaning tips
- 5 - Teardown: material analysis
- 6 - Gaming-Performance Full-HD (1920 x 1080)
- 7 - Gaming-Performance WQHD (2560 x 1440)
- 8 - Gaming-Performance Ultra-HD (3840 x 2160)
- 9 - Gaming-Performance DLSS / FSR (3840 x 2160)
- 10 - Gaming-Performance FSR3 Frame Generation (3840 x 2160)
- 11 - Latenzen
- 12 - Power consumption and balancing
- 13 - Transients and PSU recommendation
- 14 - Temperatures, IR analysis and clock rate / OC
- 15 - Fan curves, noise and audio sample
- 16 - Summary and conclusion
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