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Cascade Lake µarch
General Info
Arch Type	CPU
Designer	Intel
Manufacturer	Intel
Introduction	2018
Process	14 nm
Pipeline
Type	Superscalar
OoOE	Yes
Speculative	Yes
Reg Renaming	Yes
Stages	14-19
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, AVX-512
Cache
L1I Cache	32 KiB/core 8-way set associative
L1D Cache	32 KiB/core 8-way set associative
L2 Cache	1 MiB/core 16-way set associative
L3 Cache	1.375 MiB/core 11-way set associative
Cores
Core Names	Cascade Lake X, Cascade Lake SP
Succession
Skylake (server) Cooper Lake
Contemporary
Coffee Lake

Cascade Lake (CLX/CSL) is Intel's successor to Skylake, a 14 nm microarchitecture for enthusiasts and servers. Cascade Lake is the "Optimization" phase as part of Intel's PAO model.

For desktop enthusiasts, Cascade Lake is branded Core i7, and Core i9 processors (under the Core X series). For scalable server class processors, Intel branded it as Xeon Bronze, Xeon Silver, Xeon Gold, and Xeon Platinum.

Codenames

Core	Abbrev	Target
Cascade Lake X	CSL-X	High-end desktops & enthusiasts market
Cascade Lake W	CSL-W	Enterprise/Business workstations
Cascade Lake SP	CSL-SP	Server Scalable Processors
Cascade Lake AP	CSL-AP	Server Advanced Processors

Brands

Cascade Lake is sold under eight different families.

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.

Logo	Family	General Description	Differentiating Features
			Cores	HT	AVX	AVX2	AVX-512	TBT	ECC
	Core i7	Enthusiasts/High Performance (X)	?-?	✔	✔	✔	✔	✔	✘
	Core i9	Enthusiasts/High Performance	?-?	✔	✔	✔	✔	✔	✘
Logo	Family	General Description	Differentiating Features
			Cores	HT	TBT	AVX-512	AVX-512 Units	UPI links	Scalability
	Xeon D	Dense servers / edge computing	?-?	✔	✔	✔	1	✘
	Xeon W	Business workstations	?-?	✔	✔	✔	2	✘
	Xeon Bronze	Entry-level performance / Cost-sensitive	?-?	✘	✘	✔	1	2	Up to 2
	Xeon Silver	Mid-range performance / Efficient lower power	?-?	✔	✔	✔	1	2	Up to 2
	Xeon Gold 5000	High performance	?-?	✔	✔	✔	1	2	Up to 4
	Xeon Gold 6000	Higher performance	?-?	✔	✔	✔	2	3	Up to 4
	Xeon Platinum	Highest performance / flexibility	?-?	✔	✔	✔	2	3	Up to 8

Release Dates

Cascade Lake is expected to be released in mid-2018.

Process Technology

Cascade Lake is fabricated on Intel's 3rd generation enhanced 14nm++ process.

Architecture

As with Skylake, Cascade Lake is also based on the Purley platform and is designed as a drop-in upgrade.

Key changes from Skylake

• Architectural improvements (specifics unknown yet)
• Core
  • Security
    • Fix for CVE-2017-5715 (Spectre, Variant 2)
    • Fix for CVE-2017-5754 (Meltdown, Variant 3)
• Package
  • Selected SKUs with Arria 10 FPGAs in a MCP
• Memory
  • Supprot for up to 3 TiB per socket (up from 1.5 TiB)
  • Support for DDR-T / Optane DIMMs

This list is incomplete; you can help by expanding it.

New instructions

Cascade Lake introduced a number of new instructions:

• AVX-512 VNNI - AVX-512 Vector Neural Network Instructions

Block Diagram

This section is empty; you can help add the missing info by editing this page.