AnandTech’s bar chart explains it really well! It boosts the two fastest cores to the TB 2.0 clock while the remaining cores hover between 4.6GHz and 5GHz. Turbo Boost 2.0 is the standard boost algorithm that has existed since the early Skylake era. The 11th Gen Rocket Lake-S CPUs make Intel’s boost algorithm even more confusing by adding a third, wait, no fourth boost state called Adaptive Boost, in addition to the already existing Turbo Boost 2.0, Turbo Boost Max (3.0), and Thermal Velocity Boost (in ascending order). More here Turbo Boost vs Thermal Velocity Boost vs Adaptive Boost However, in most gaming and rendering workloads, the load power draw should be much closer to the PL2 values of 250W and 224W for the Core i7/i9 and Core i5, respectively. Similarly, the 11600K also draws close to 300W with workloads with AVX512 in action. Power Values for the lower-end Core i3 and Pentium and Celeron SKUs are unchangedįor example, when paired with a Z590 board and 16GB of DDR4-3600 memory, the Core i7-11700K drew 339W in AIDA64 and a whopping 394W in Prime95, both AVX tests. The newer Rocket Lake-S parts support AVX-512 as well which can dramatically speed up certain AVX workloads…at the cost of power, a lot of power. Pentium Gold G6500T, Pentium Gold G6400T, Celeron 5900TĪlthough the PL1 and PL2 values of the 10th Gen and 11th Gen lineups are more or less the same, there’s more to it than meets the eye. Pentium Gold 6500, Pentium Gold 6400, Celeron G5920, Celeron G5900
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In most cases, your CPU will run at the maximum Turbo Boost clock (PL2 power state) for infinity or as long as the thermals allow it (while ignoring the Tau time limit).
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However, for better or for worse, Intel doesn’t enforce the PL2 and Tau values, and motherboard vendors are free to set them as they choose in the firmware. After that, it’d return to PL2 power limits and repeat the above-explained behavior. This would continue till the intensive workload is completed and the CPU returns to idle. Under standard conditions, the processor would adhere to the PL2 power state and the accompanying boost frequency for a duration “Tau”, usually 56 seconds, and then return to PL1 (stock), thereby reducing the clock speed to the base frequency. In such a scenario, the power draw will quickly soar up to the PL2 limit and the processor will reduce the all-core frequency to keep the power draw in check. However, when you’re running a more intensive multi-threaded application, say Cinebench or 7-zip, all your CPU cores will kick into action. In most single to quad-threaded applications, the CPU power draw will stay under PL2 despite reaching the maximum Turbo Boost frequency.
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Then there’s Tau which determines how long will your chip stay at the boosted “PL2” state. This power state or profile is called PL2 (Power Level 2) while the stock (marketed) power state is called PL1. When the CPUs boost to higher “Turbo Frequencies”, the power draw increases considerably. The marketed TDP of Intel CPUs pertains to the power draw at stock frequencies, otherwise known as the PL1 value.
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Before we move onto the PL1 (stock) and PL2 (boost) power values, here’s a quick primer on what these and some of the other primarily used terms mean: PL1, PL2, and Tau with TB 2.0 Larger transistors mean a larger die, higher thermal output, and increased power draw. Although much of the IPC advances have been retained, the efficiency is much lower than the original 10nm design. Dubbed Cypress Cove, the new CPUs feature a 14nm backport of the 10nm Sunny Cove core.
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Intel’s 11th Gen Rocket Lake-S processors feature the first upgrade to the company’s desktop lineup since 2015’s Skylake.