Edit Values
Sierra Forest µarch
General Info
Arch Type	CPU
Designer	Intel
Manufacturer	Intel
Introduction	June 4, 2024
Process	Intel 3
Instructions
ISA	x86-64
Succession
Emerald Rapids Clearwater Forest
Contemporary
Granite Rapids

Sierra Forest (SRF) is a new Atom based architecture for servers, built on Intel's 3 nm node.

History

Intel Xeon Roadmap through 2024.

Sierra Forest was announced at the 2022 Intel Investor Meeting, it is a new microarchitecture that will day view alongside Granite Rapids in 2023.

Process Technology

Emerald rapids is planned to be manufactured on the Intel 3 process.

CPUID

Core	Extended Family	Family	Extended Model	Model
SP	0	0x6	0xA	0xF
	Family 6 Model 175

Architecture

Key changes from Saphire Rapids

• Intel 3 (from Intel 7)
• Core
  • Golden Cove → Crestmont

New instructions

Sierra Forest is set to introduce new instructions:

• CMPCCXADD - Compare and Add if Condition is Met
• AVX IFMA - Integer Fused Multiply Add
• AVX VNNI INT8 - AVX Vector Neural Network Instructions INT8
• LASS - Linear Address Space Separation

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

Products

Sierra Forest-SP

• Sierra Forest-SP (Scalable Performance) uses the Beechnut City platform

with the smaller LGA 4710 socket, targeted towards mainstream server.

Sierra Forest-SP features up to 144 E-cores and eight-channel DDR5 memory support.

Sierra Forest-AP

• Sierra Forest-AP uses the Avenue City platform with the larger

LGA 7529 socket for higher core count SKUs up to 288.

It supports a higher number PCIe lanes and 12-channel DDR5 memory.

Models

Sierra Forest (E-core) • Crestmont (Sierra Glenn)

Granite Rapids (P-core) • Redwood Cove

LGA 4710 (Socket E2)

Xeon 6 6700 Series

• Xeon 6710E
• Xeon 6731E
• Xeon 6740E
• Xeon 6746E
• Xeon 6756E
• Xeon 6766E
• Xeon 6780E

Processors		Cores/Threads	Clock rate	TDP	Socket	Price
Intel Xeon 6 6780E	144C/288T	2.2 – 3.0 GHz	330W	2S	$11350
Intel Xeon 6 6766E	144C/288T	1.9 – 2.7 GHz	250W	2S	$10257
Intel Xeon 6 6756E	128C/256T	1.8 – 2.6 GHz	225W	2S	$8428
Intel Xeon 6 6746E	112C/224T	2.0 – 2.7 GHz	250W	2S	$5929
Intel Xeon 6 6740E	 96C/182T	2.4 – 3.2 GHz	250W	2S	$5265
Intel Xeon 6 6731E	 96C/182T	2.2 – 3.1 GHz	250W	1S	$4121
Intel Xeon 6 6710E	 64C/182T	2.4 – 3.2 GHz	205W	2S	$2749

See also

• Crestmont