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We won’t put too much emphasis on PBO results, but we will spend some time to quickly analyse them using our full fan speed data.
With 90C the maximum target temperature for PBO, we are looking for the cooler that achieves the balance between lower temperature operation and higher PBO clock speeds. Higher clocks with lower temperatures are better. But one cooler may run at slightly higher temperatures than another, albeit with higher clock speeds, so look out for that.
In essence, this test is showing us how far the coolers can be pushed while keeping a sensible 90C maximum. Or whether there is more room for pushing clocks and power delivery beyond the PBO limits while still sticking to a 90C target.
Under PBO conditions with full fan and pump speeds, the Arctic Liquid Freezer II 360 A-RGB does a good job.
We see the CPU temperature reading on our Ryzen 9 5950X coming in below the 90C limit. And the resultant CPU average core clock is around 4.35GHz. This is a little lower than some competing AIOs and is notably behind the other 360mm units. But it is still a reasonable outcome when coupled with the 219W of managed package power.
That’s especially true when the excellent noise performance is factored in.
