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Rocket Lake µarch
General Info
Arch Type	CPU
Designer	Intel
Manufacturer	Intel
Introduction	March 16, 2021
Process	14 nm
Core Configs	4, 6, 8
Pipeline
Type	Superscalar, Superpipeline
OoOE	Yes
Speculative	Yes
Reg Renaming	Yes
Stages	14-19
Decode	5-way
Instructions
ISA	x86-64
Extensions	MOVBE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, POPCNT, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA3, F16C, BMI, BMI2, VT-x, VT-d, TXT, TSX, RDSEED, ADCX, PREFETCHW, CLFLUSHOPT, XSAVE, SGX, MPX, AVX512F, SHA
Cache
L1I Cache	48 KiB/core 12-way set associative
L1D Cache	32 KiB/core 8-way set associative
L2 Cache	512 KiB/core 8-way set associative
L3 Cache	2 MiB/core 16-way set associative
Cores
Core Names	Cypress Cove
Succession
Comet Lake Alder Lake
Contemporary
Tiger Lake

Rocket Lake (RKL) is a microarchitecture designed by Intel as a successor to Comet Lake for desktops and single-socket servers.

Codenames

Core	Description	Graphics	Target
Rocket Lake S	Mainstream performance	GT2	Desktop performance to value, AiOs, and minis
Rocket Lake U	Ultra-low power	GT2	Light notebooks, portable All-in-Ones (AiOs), Minis, and conference room

Brands

Intel has released Rocket Lake under the following brand families:

Logo	Family	General Description	Differentiating Features
			Cores	HT	AVX	AVX2	AVX512	TVB	ECC
	Core i5	Mid-range Performance	Hexa	✔	✔	✔	✔	✘	✘
	Core i7	High-end Performance	Octa	✔	✔	✔	✔	✘	✘
	Core i9	High-end Performance	Octa	✔	✔	✔	✔	✔	✘
50px	Xeon	1S Server & Workstation	4-8	✔	✔	✔	✔	✘	✔

Release Dates

Rocket Lake was officially introduced on March 16, 2021 and went on sale from March 30, 2021. Limited quantities of the Core i7-11700K were (accidentally?) available through the German reseller Mindfactory on March 6, 2021.

The Xeon W-1300 Line using Rocket Lake is expected to be officially launched in Q3/2021.

Compatibility

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Rocket Lake will feature the same LGA1200 socket as Comet Lake. Rocket Lake is backwards compatible with Comet Lake. Rocket Lake will have new motherboards and a new 500 series chipset. Rocket Lake will not be compatible with Alder Lake.

Compiler support

Compiler	Arch-Specific	Arch-Favorable
ICC	-march=?	-mtune=?
GCC	-march=rocketlake	-mtune=rocketlake
LLVM	-march=?	-mtune=?
Visual Studio	/arch:AVX512	/?

CPUID

Further information: Intel CPUIDs

Core	Extended Family	Family	Extended Model	Model	Stepping
S	0	0x6	0xA	0x7	0x0-0x1
	Family 6 Model 167 Stepping 0-1 Stepping: A0=0, B0=1

Architecture

Key changes from Comet Lake

Preliminary Data! Information presented in this article deal with future products, data, features, and specifications that have yet to be finalized, announced, or released. Information may be incomplete and can change by final release.

• Core
  • Skylake ➡ Cypress Cove

• GPU
  • Gen 9.5 ➡ Gen12 (Xe)
  • 32 EUs up from 24 EUs

• Display
  • DisplayPort 1.4a (from DisplayPort 1.2)
  • HDMI 2.0b (from HDMI 1.4b)

• I/O
  • PCIe 4.0 (from 3.0)

• Memory
  • Faster memory for mainstream desktops (i.e., Rocket Lake S) DDR4-3200 (from DDR4-2933)

• Chipset
  • 400 Series chipset → 500 Series chipset
    • 2.5G Ethernet (Foxville) support
    • Integrated WiFi 6 AX201 (GiG+) support via CNVi

• Packaging
  • Die thinning on top-end SKUs for better heat removal