More is known about the base and maximum frequencies as well as the power limits of the Core i9-11900, Core i7-11700K, and Core i7-11700.
Early next year, Intel has officially unveiled its 11 th generation of desktop processors, Rocket Lake-S. This range will logically succeed the 10 th, Comet Lake-S. It will have the heavy task of facing the Ryzen 5000 from AMD.
Cypress Cove to the rescue of the 14nm
On paper, the fight promises to be fairly uneven. While AMD’s chips benefit from a well-controlled Zen 3 CPU architecture and 7nm engraving, those from Intel are stuck with 14nm engraving. Also, unlike the Comet Lake-S, the Core i9 Rocket Lake-S will also not offer 10 cores / 20 threads but will be limited to 8 cores / 16 threads.
However, to compete with AMD’s armada, Intel’s Rocket Lake-S still have an argument to make: a new CPU architecture, Cypress Cove, which will replace the aging Skylake architecture that the company has been tightening since last year. the sixth generation of Core.
This Cypress Cove architecture would lead to an increase in IPCs (instructions per cycle) of at least 10% according to Intel. This bodes well for an increase in the number of instructions per second, especially if the Rocket Lake-S retain the high frequencies of their direct ancestors. The numerous leaks in recent weeks have corroborated this hypothesis. News, which comes from a Bilibili user, also points in this direction. It reveals the specifications of three Rocket Lake-S processors, the Core i9-11900, Core i7-11700K, and Core i7-11700.
Power limits identical to those of Comet Lake-S processors
All these references, therefore, embed 8 cores / 16 threads. The K suffix of the Core i7-11700K means that it is an unlocked multiplier chip, in other words, eligible for overclocking. The reported values come from engineering samples. Consequently, those of the processors marketed are likely to vary.
The Core i9-11900 is said to have a base frequency of 1.8 GHz, a Boost frequency across all of its cores of 4 GHz, and a maximum frequency on a 4.5 GHz core. Unsurprisingly, it would be configured with a 65W PL1 (TDP) and a 224W PL2.
For information, the PL2 represents the power limit that can be reached by a processor for a certain duration (defined by the Tau value). In practice, a Core i9-10900, for example, has a PL1 of 65 W, a PL2 of 224 W, and a Tau value of 28 seconds. A Core i9-10900K, on the other hand, has a PL1 of 125 W, a PL2 of 250 W, and a Tau value of 56 seconds.
This aside, let’s come back to our Rocket Lake-S. The Core i7-11700K for its part would have a base frequency of 3.4 GHz, a Boost frequency on all of its cores of 4.3 GHz, and a maximum frequency on a core of 4.8 GHz. Its TDP would be 125 W and Intel would set its PL2 at 250 W. Less swift, the Core i7-11700 would have a base frequency of 1.8 GHz, a Boost frequency on all its cores of 3.8 GHz, and a maximum frequency on a 4.4 GHz core. Its power limits would be identical to those of the Core i9-11900.
Without going too far, we can consider that the base frequencies of the Core i9-11900 and Core i7-11700 released are significantly higher than those advanced here. It is also likely that the Boost frequencies will also be increased by a few hundred MHz, especially for the Core i7-11700K. In fact, we can hardly imagine it not teasing 5 GHz on a core.
The other interesting information shared by the user of Bilibili concerns the default XMP memory frequency of Rocket Lake-S. The latter would be 3200 MHz (DDR4-3200). This is a significant improvement over Comet Lake-S, for which the official value is DDR4-2933.
In addition, note that a Core i9-11900K housed on a B560 motherboard working with DDR4-4133 memory has recently been spotted. This suggests that Intel would allow memory overclocking on such cards. A change in policy since until now, the company only granted this prerogative to Z series motherboards.
Finally, to be exhaustive about Rocket Lake-S chips, let us specify that they will provide support for PCIe 4.0 to Intel’s consumer platforms. They will also benefit from an iGPU based on Xe technology.
Intel is likely to unveil this range at CES 2021. The event will take place from January 11 to 14.
Source: Tom’s Hardware US