parvadomus
Senior member
- Dec 11, 2012
- 685
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What really surprised me is that GTX 780 Ti in SLI draws so much less power than R9 290X in Crossfire in Anandtech's Crysis 3 gaming test, while maintaining higher performance too!?!.
Multi-GPU Power Consumption in Crysis 3 (http://images.anandtech.com/graphs/graph7492/59709.png)
GTX 780 Ti SLI: 556 watts
R9 290X "Quiet" Crossfire: 643 watts
R9 290X "Uber"[Loud] Crossfire: 727 watts
Multi-GPU Performance in Crysis 3 (http://images.anandtech.com/graphs/graph7492/59674.png)
GTX 780 Ti SLI: 100.6 fps
R9 290X "Quiet" Crossfire: 80.1 fps
R9 290X "Uber"[Loud] Crossfire: 90.8 fps
This means that, with respect to Crysis 3 multi-GPU gaming perf-per-watt, GTX 780 Ti SLI has 45% higher perf-per-watt compared R9 290X Crossfire in "Uber"[Loud] Mode, and 45% higher perf-per-watt compared to R9 290X Crossfire in "Quiet" mode!
Now let's look at single GPU results.
Single-GPU Power Consumption in Crysis 3 (http://images.anandtech.com/graphs/graph7492/59709.png)
GTX 780 Ti: 372 watts
R9 290X "Quiet": 375 watts
R9 290X "Uber"[Loud]: 405 watts
Single-GPU Performance in Crysis 3 (http://images.anandtech.com/graphs/graph7492/59674.png)
GTX 780 Ti: 62.4 fps
R9 290X "Quiet": 51.9 fps
R9 290X "Uber"[Loud]: 53.8 fps
This means that, with respect to Crysis 3 single GPU gaming perf-per-watt, GTX 780 Ti has 26% higher perf-per-watt compared R9 290X in "Uber"[Loud] Mode, and 21% higher perf-per-watt compared to R9 290X in "Quiet" mode!
For those who want an NVIDIA card, the GTX 780/780 OC models are still a better value than GTX 780 Ti, but in general the perf-per-watt is really good on these high end Kepler models (and one can only imagine how much better performance would be if temp/noise/power limits were raised, especially in SLI systems).
Its barely ~10% more efficient than 290X (running @ high temps :'().
Link
Aftermarket 290X may be on-par efficiency-wise.