Rocket Lake

Rocket Lake. Rocket Lake is a family of desktop central processing units designed by Intel and introduced in March 2021. It succeeded the Comet Lake microarchitecture and was the final series to utilize the 14 nm process for Intel's mainstream desktop platform. The processors were built for the LGA 1200 socket and introduced several new features, including support for PCI Express 4.0 and enhanced integrated graphics.

Overview

The Rocket Lake microarchitecture, officially branded as the 11th Gen Intel Core processors, represented a strategic shift for Intel's desktop lineup. It was developed under the project name Rocket Lake-S and served as a stopgap between the long-running Skylake derivatives and the hybrid Alder Lake design. Key marketing focused on improved instructions per cycle and new platform capabilities, aiming to compete more effectively with rival offerings from Advanced Micro Devices. The launch was accompanied by new chipsets, including the flagship Z590, and received significant attention from the technology press and enthusiast community.

Architecture and features

At the core of Rocket Lake is the Cypress Cove microarchitecture, which brought a backported version of the Sunny Cove core design from Intel's 10 nm process to the mature 14 nm process. This redesign increased the maximum core count to eight, a reduction from the ten cores available in Comet Lake, but offered a significant uplift in IPC. The integrated graphics transitioned to the Intel Xe-LP architecture, branded as Intel UHD Graphics 700-series, providing a substantial generational improvement. New instruction set extensions included AVX-512 and Deep Learning Boost, enhancing performance in specialized workloads. The platform itself introduced native support for PCI Express 4.0, doubling the available bandwidth for devices like NVMe SSDs and modern graphics processing units.

Processor list

The Rocket Lake family spanned from the entry-level Intel Core i5 to the flagship Intel Core i9 series. The top-tier model was the Core i9-11900K, an eight-core, sixteen-thread processor with a maximum turbo frequency of 5.3 GHz. Other notable SKUs included the Core i7-11700K and the Core i5-11600K, which became popular choices for gaming systems. The lineup also featured non-K locked processors, along with F-series variants that disabled the integrated graphics. All models featured increased cache sizes compared to their predecessors and supported Intel Turbo Boost Max Technology 3.0. The series was formally announced at the Intel CES 2021 keynote presentation.

Performance and reception

Upon release, reviews from outlets like AnandTech, Tom's Hardware, and Gamers Nexus noted that Rocket Lake delivered a tangible IPC improvement, leading to strong single-threaded and gaming performance that often surpassed Comet Lake. However, the reduction to eight cores and high power consumption under load drew criticism, especially in multi-threaded applications against competing AMD Ryzen processors. The inclusion of AVX-512 support was seen as a niche but welcome addition for professional users. Overall, the reception was mixed; it was praised for its gaming prowess and new platform features but was also viewed as a power-hungry architecture that highlighted the constraints of the 14 nm process.

Platform and compatibility

Rocket Lake processors were designed for the LGA 1200 socket, maintaining compatibility with existing 400-series chipsets like the Z490 with a BIOS update, though full feature support required the new 500-series chipsets. The flagship Z590 chipset unlocked overclocking and provided full PCIe 4.0 lane connectivity. Motherboard partners, including ASUS, Gigabyte Technology, MSI, and ASRock, released extensive lineups supporting the new CPUs. Platform support extended to Thunderbolt 4 and Intel Wi-Fi 6E, with memory support officially for DDR4-3200. The platform was succeeded in late 2021 by the hybrid Alder Lake architecture and the new LGA 1700 socket.

Category:Intel microprocessors Category:x86 microprocessors Category:2021 in computing