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The Core Ultra 7 265K recorded a sustained 216W power use when measure during a 30 minute Cinebench R23 benchmark.
That power use dropped to 90w when gaming in Cyberpunk 2077 and fell even further to just 17w when idle.
Those power usage figures in the previous chart, when combined with the cooling capabilities of the system, results in CPU package temperatures of 81 degrees in Cinebench, 61 degrees when gaming and 51 degrees when idle.
Taking a closer look at GPU temperatures while gaming shows a peak hotspot temperature of 81 degrees, while the overall GPU sensor at 71 degrees was a nice even 10 degrees cooler and the memory was a touch higher than that at 73 degrees.
That heat generation causes the fans to ramp up quite dramatically – the fan curves are being handled by iCUE, as the systems cooling components are all manufactured by Corsair.
Noise levels when idle are pretty quiet, at roughly 34dB. Gaming doesn't see them increase by much, coming in at around 40dB – but when running Cinebench, the system get’s very loud, hitting 60dB on my sound meter when recording, with some very aggressive ramps up and down in fan speeds.
The final chart to look at is total system power usage when measured at the wall socket – the Nebula Pro R consumed 75 watts when idle, 297 watts when running a CPU heavy task such a Cinebench and 442 watts when engaging both the CPU and GPU when gaming.
