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Since it's turbo, I thought it means "as long as the CPU likes it", rather than indefinitely. Or did they change how turbo works and now it's "it will run on tu
by muro 7y ago
Since it's turbo, I thought it means "as long as the CPU likes it", rather than indefinitely. Or did they change how turbo works and now it's "it will run on turbo frequencies as long as there is enough load and the CPU is not temperature throttled"?
- segfaultbuserr 7y agoSee the original comments under the news article. > Base frequency is when the Tau moving window time has expired. How most modern high end motherboards set it to an effective unlimited time. https://www.anandtech.com/show/13544/why-intel-processors-draw-more-power-than-expected-tdp-turbo https://www.anandtech.com/show/13544/why-intel-processors-dr... > To simplify, there are three main numbers to be aware of. Intel calls these numbers PL1 (power level 1), PL2 (power level 2), and T (or tau). > PL1 is the effective long-term expected steady state power consumption of a processor. [...] PL2 is the short-term maximum power draw for a processor. [...] Tau is a timing variable. It dictates how long a processor should stay in PL2 mode before hitting a PL1 mode. > This is where it gets really stupid: the motherboard vendors got involved, because PL1, PL2 and Tau are configurable in firmware. [...] This lets them set PL2 to 4096W and Tau to something very large, such as 65535, or -1 (infinity, depending on the BIOS setup). This means the CPU will run in its turbo modes all day and all week, just as long as it doesn’t hit thermal limits.