Latest benchmarks from engineering sample 13900k.
On average FPS, overall there seems to be very minor improvements but there are some outliers. Minimum FPS sees a reasonable gain at lower resolutions. Power draw seems to be significantly higher in games, still not super high given my 5950x likes to draw 120w in many games but it is higher than 12th gen
Power consumption seems very high for the improvement offered, though there clearly is an impovement in the all important minimum framerate metrics.
Hopefully this is just QS sample being at too high a voltage, or pre-release BIOS supplying wrong voltage.