Max Operating Temperature
To check the operating temperatures, I run Blender instead of Prime95 and small FFTs, which apply an unrealistically high load to the CPU.
I removed the power limit in the Z690 mainboard. Hence the processor went full speed, reaching the thermal limit where it throttled.
VRM Performance, Temperatures & Overclocking
Since the peak power performance doesn’t state much about the VRM performance, I thought to provide you with the following graphs, which clearly show the VRM’s response in CPU transient loads.
I don’t see any major overshoots during the start of the demanding Prime95 tests, indicating that the mainboard’s VRMs can handle a power-beast like the 12900KF.
I even left Prime95 running for over a half-hour period, noticing over 400W power spikes. The VRMs didn’t get hot, as shown in the screenshot above.
Overclocking
The B760 chipset is the choice for users on a tight budget who don’t want to spend much to get a mainboard using the Z790 chipset. Besides overclocking options not present in B760, the main difference is the half-bandwidth of the DMI link between the CPU and the chipset, from 8x to 4x. This affects the number of peripheral devices that the B760 chipset can handle.
Sorry, but those numbers cannot be correct. B760 has no OC, enforced power limits, thus 241W to the CPU for a max of 56 seconds.
That would explain the VRM and CPU temps, because with that VRM, that cooler, and 350+W into the CPU, the VRM and CPU temps would not be that low even on Mars.
I have powenetics measuring CPU power consumption in real-time, throughout all tests. In gaming, the PSU doesn’t have to go full power, while in apps the difference is 10%! So the numbers are correct, yes.