Yesterday, 02:25 AM
(This post was last modified: Yesterday, 02:26 AM by Chick3nman.)
I have no idea why they would think that. The 5090 is easily the fastest GPU, and the 4090 is not awfully far behind it. The 2080Ti certainly cannot come close to either, so something is seemingly wrong with their benchmarks.
Hashrate per Watt can be a bit more difficult to measure and estimate, however the 4090 has been king of hashrate per watt _as well_, with the 5090 being similar though I've got less time and testing on the 5090 to say for certain. Everyone tends to look at "peak" power, especially using the rated TDP figures, but this doesn't tell the full story. You can shave a significant portion of the power off of a 4090 and lose little to no speed.
I've just run a benchmark at the unlocked rated power limit(133%) of ~600W and I come up with ~160GH/s for MD5. Cutting the power limit to 75%, or ~350W, I am still seeing 145GH/s. This puts the 4090, and very likely the 5090, in a position of significant performance per watt, even against lower and commonly more efficient GPUs. This won't hold perfectly true, as some algorithms are more power hungry than others and may see greater variance, but in most common algorithms we see very little fall off even with significant power restrictions. The high end cards have become increasingly difficult to beat in any metric, with complete dominance in terms of total performance and performance density, and even great performance per watt when power limited. Performance per dollar can be really variable as it depends on what price you end up paying for such a card and the prices have been pretty unstable, but at least at MSRP they even look like a pretty good value all things considered.
Hashrate per Watt can be a bit more difficult to measure and estimate, however the 4090 has been king of hashrate per watt _as well_, with the 5090 being similar though I've got less time and testing on the 5090 to say for certain. Everyone tends to look at "peak" power, especially using the rated TDP figures, but this doesn't tell the full story. You can shave a significant portion of the power off of a 4090 and lose little to no speed.
I've just run a benchmark at the unlocked rated power limit(133%) of ~600W and I come up with ~160GH/s for MD5. Cutting the power limit to 75%, or ~350W, I am still seeing 145GH/s. This puts the 4090, and very likely the 5090, in a position of significant performance per watt, even against lower and commonly more efficient GPUs. This won't hold perfectly true, as some algorithms are more power hungry than others and may see greater variance, but in most common algorithms we see very little fall off even with significant power restrictions. The high end cards have become increasingly difficult to beat in any metric, with complete dominance in terms of total performance and performance density, and even great performance per watt when power limited. Performance per dollar can be really variable as it depends on what price you end up paying for such a card and the prices have been pretty unstable, but at least at MSRP they even look like a pretty good value all things considered.