In line with an up to date report by ComputerBase, AMD is reportedly hiding efficiency per watt graphs of its upcoming RX 7900 XTX and 7900 XT graphics playing cards. AMD’s footnotes from November fifteenth’s efficiency presentation state there was alleged to be a efficiency per watt slide “RX-841” for the RX 7900 XTX, however AMD by no means introduced it.
To be extra particular, AMD was initially supposed to point out off a efficiency per watt slide of its RX 7900 XTX and 7900 XT in comparison with Nvidia’s very power-hungry GeForce RTX 4090 primarily based on publicly disclosed TBP values. Nevertheless, as a result of this slide was by no means proven, and AMD by chance left this footnote in its presentation, its determination was apparently made on the final minute.
We haven’t any affirmation of why AMD determined to cover this slide, however we suspect Nvidia’s RTX 4080 had one thing to do with it, particularly contemplating its very excessive performance-per-watt ratio.
Our assessment of the RTX 4080 discovered the cardboard’s performance-per-watt to be extremely good. It outperformed Nvidia’s power-sucking RTX 3090 Ti whereas consuming far much less energy than its most 320W TBP permits. The truth is, in accordance with our assessments, the RTX 4080 Founders Version consumed simply 221W at 1080p. Moreover, the one workload we discovered that may max out the RTX 4080’s energy finances was Furmark mixed with a GPU overclock.
This was the precise reverse of our RTX 4090 outcomes, the place we discovered that card consumed over 400W of energy whereas gaming. Apparently, Nvidia wished to push the 4090 to its absolute limits, whereas its RTX 4080 centered extra on effectivity.
Nvidia confirmed the 4080’s effectivity with its personal article on the identical topic, (opens in new tab) stating the RTX 4080 may hit simply 251W of energy consumption beneath common gaming circumstances (albeit at 1440p decision). That is a formidable feat contemplating Nvidia’s earlier technology RTX 3090 Ti consumes considerably extra energy at 398W beneath typical gaming workloads, in accordance with Nvidia’s article. This accounts for a 37% energy discount for the RTX 4080, and that is not even contemplating the 4080’s barely sooner gaming efficiency.
Once more, we will not affirm that AMD hid this slide purely primarily based on the RTX 4080’s energy outcomes. Nevertheless, it’s the most rational answer we will consider proper now. Moreover, AMD is already concentrating on Nvidia’s RTX 4080 with its flagship RX 7900 XTX as a substitute of the RTX 4090. So AMD has so much using on its RX 7900 XTX competing with Nvidia’s RTX 4080.
If every thing goes completely for Nvidia, AMD can have a flagship GPU that consumes barely extra energy than the 4080. The RX 7900 XTX’s energy consumption is rated at a barely greater 355W TBP in comparison with 320W on the 4080. So there’s a likelihood this may occur. However like we noticed with the 4080 outcomes, TBP does not inform the entire story. So you may have to attend for our RX 7900 XTX assessment to return out in December to see if AMD’s 7900 XTX can beat Nvidia’s RTX 4080.