Imposing RTX 4090 stands out in comprehensive GeForce RTX 40-series rumor specsheet and power-efficiency chart but the RTX 4070 is the real dark horse

A comprehensive rumor specsheet for the upcoming Nvidia GeForce RTX 40 series has been compiled by the known leaker @harukaze5719. Featuring information provided by noted sources such as kopite7kimi, greymon55, and others, the RTX 40 rumor specsheet gives gamers and desktop PC builders an easy guide to see what Nvidia may have in store. The SKUs mentioned range from the entry-level RTX 4050 all the way to “The Beast”, which may be the RTX 4090 Ti, and a potentially new TITAN-class graphics card. The sheet also gives TSE (Time Spy Extreme) benchmark scores to give a better idea of the generational performance increases from Ampere to Lovelace that buyers can expect.

Looking at the chart, it is possible to pick out at least three exciting prospects, although one of those is still a little of an unknown quantity. The TITAN model, which is listed as “full of AD102” and with the potential to deliver 103.22 TFLOPS, has the highest “vs RTX 30” score with +112.39%. However, there was no TITAN SKU in the GeForce RTX 30 series. The more-likely RTX 4090 begins to shine now, as it apparently offers a huge +96.08% performance gain over its predecessor, which should have many gamers frothing at the mouth. Further down the chart, the RTX 4070 also sticks out from its neighbors thanks to a healthy +61.76% performance leap, while the RTX 4080 and RTX 4060 still manage +50% and above.

Moving on to @harukaze5719’s power-efficiency calculations and, once again, the GeForce RTX 4090 posts imposing figures. With a score per W of 44.4, calculated by dividing the expected or leaked Time Spy Extreme benchmark result by the rumored TBP (in this case, 20,000/450 W), the RTX 4090 pips the RTX 4080 as the most power-efficient card. The latter SKU beats the RTX 4090 in terms of percentage improvement over their respective RTX 30 predecessors (+157.3% vs. +152.5%), but the obvious note to make here is just how impressive the Lovelace-based GeForce RTX 40 cards look in comparison to their Ampere-based ancestors.

There is a caveat to be inserted here, as the calculation for the RTX 4090 has been carried out on the presumption that the TBP will be 450 W. If it ends up being higher, such as 600 W, then the score per W becomes a much less spectacular 33.3. The good news, for any who might be thinking that Nvidia has poured all its efforts and refinements into high-end cards that could end up costing in the region of US$1,500-US$2,000, is that the more-affordable RTX 4070 also impresses once again in the power-efficiency comparison. With a measured score of 38.6 per W, this mid-range contender cruises over its RTX 30 predecessor with a massive +124.9% improvement. It's a lot of oomph for a graphics card that might cost in the region of US$499.

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