3 ms·
> For all practical purposes, under a suitable all-core load, the 7950X will be running at 95C Tj.Max all the time. If you throw a bigger cooler on it, it will
by formerly_proven 4y ago
> For all practical purposes, under a suitable all-core load, the 7950X will be running at 95C Tj.Max all the time. If you throw a bigger cooler on it, it will boost to higher clock speeds to get right back to Tj.Max. Because of this, the performance of the chip is dependent on the cooling. And it is basically impossible to hit the 230W power limit at stock without direct die or sub-ambient.
> If 95C sounds scary, wait to you see the voltages involved. AMD advertises 5.7 GHz. In reality, a slightly higher value of 5.75 GHz seems to be the norm - often across half the cores simultaneously. So it's not just a single core load. The Fmax is 5.85 GHz, but I have never personally seen it go above 5.75.
5.75 GHz is reached with 1.5 V Vcore.
The +50 MHz bump over advertised boost clocks was also present in Zen 3, likely in response to the poor reception of Zen 2 behavior, which would usually fail to achieve the advertised clocks.