Do processors have a frame instead of a lid?
Do processors have a frame instead of a lid?
That's an Intel CPU. Desktop Ryzen are held on all sides and corners. Ryzen H suffix CPUs are meant for portable devices, soldered to MB and likely direct die cooling without IHS. Still don't see what it has to do with with artist's rendered picture of possible innards. That's like comparing comics to photos.
there isn't any known minimum temperature for increasing frequency, while maximum temperatures tend to lower the core frequency.
There is nothing like a maximum temperature beyond which performance may diminish. Tjmax is listed for every CPU. Unless you intentionally overclock, you won’t exceed 1Hz above Tjmax at lower temperatures. Performance-related problems might occasionally show brief temperature spikes above Tjmax that aren’t caught by the system and firmware. Since this behavior is part of the CPU’s microcode, it can’t be avoided by BIOS settings.
The processor is built to operate at its maximum temperature, but requires a lower minimum temperature.