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Intel Rocket Lake (14nm) Review: Core i9-11900K, Core i7-11700K, and Core i5-11600K
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Today is the official launch of Intel’s 11[sup]th[/sup] Generation Core processor family, given the internal name ‘Rocket Lake’. Rocket Lake showcases new performance gains for Intel in the desktop space, with a raw clock-for-clock performance uplift in a number of key workloads.

In order to accomplish this, Intel has retrofitted its 10nm CPU and GPU designs back to 14nm, because only 14nm can achieve the frequency required. In exchange, the new processors to get this performance run hot, cost more for Intel to produce, have two fewer cores at the high end, but customers also get PCIe 4.0 on Intel’s mainstream desktop platform for the first time.

In our review today, we will be going over Intel’s new hardware, why it exists, and how it performs, focusing specifically on Intel’s new flagship, the Core i9-11900K, which has eight cores and can boost up to 5.3 GHz

Intel’s Rocket Lake: Core i9, Core i7, and Core i5

The new Intel 11th Gen Core desktop processor family will start with Core i5, with six cores and twelve threads, through to Core i7 and Core i9, both with eight cores and sixteen threads. All processors will support DDR4-3200 natively, and offer 20 PCIe 4.0 lanes in supported motherboards – these lanes will enable graphics and storage direct from the processor, typically in an x16/x4 or x8/x8/x4 combination.

Both the Core i9 and Core i7 this time around have the same core count - normally the Core i9 would offer an obvious difference, such as more cores, but for this generation the difference is more subtle: Core i9 will offer higher frequencies and Thermal Velocity Boost (TVB). The Core i9-K and i9-KF will also feature Intel’s new Adaptive Boost Technology (ABT). We’ll go over Intel’s Turbo nomenclature later in the article.

Intel 11th Gen Core Rocket Lake Core i9
AnandTech Cores Threads Base Freq 1T Peak nT Turbo TDP (W) IGP UHD Price 1ku

i9-11900K 8 / 16 3500 5300 4700 125 750 $539
i9-11900KF 8 / 16 3500 5300 4700 125 - $513
i9-11900 8 / 16 2500 5200 4600 65 750 $439
i9-11900F 8 / 16 2500 5200 4600 65 - $422
i9-11900T 8 / 16 1500 4900 3700 35 750 $439

At the top of the stack is the Core i9-11900K. Intel has set the 1000-unit pricing of the Core i9-11900K at $539. Note that Intel does this 1k unit pricing for OEMs, and the final retail price is often $10-$25 higher, but in the case of the Core i9-11900K, users are currently looking at a $615 price point at Newegg.

This is well above AMD’s Ryzen 7 5800X at $449 SEP (MSRP), which is also an 8-core processor, and beyond even the Ryzen 9 5900X at $549 SEP. Intel is stating that along with better gaming performance, this processor also offers next-generation integrated graphics, support for new AI instructions, and enhanced media support for the price differential.

The Core i9-11900K is the highlight processor of today’s review, and it has a base frequency of 3.5 GHz, alongside a peak turbo of 5.3 GHz in Thermal Velocity Boost mode, 5.2 GHz otherwise on the favored core, or 5.1 GHz on non-favored cores. The all-core frequency is 4.8 GHz in TVB turbo mode, or 4.7 GHz otherwise, or it can ‘float’ the turbo up to 5.1 GHz when ABT is enabled, however ABT is disabled by default.

The only processor not getting TVB in the Core i9 family is the i9-11900T, which is the 35 W member of the family. This processor has 35 W on the box because its base frequency is 1.5 GHz, although it will turbo up to 4.9 GHz single core and 3.7 GHz all-core. These T processors typically end up in OEM systems and mini-PCs which are more likely to strictly follow Intel’s turbo recommendations.

All Core i9 processors will support DDR4-3200, and the specification is to enable a 1:1 frequency mode with the memory controller at this speed.
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Additional Review: https://www.tomshardware.com/news/intel-...00k-review
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