Essentials
Product Collection
4th Generation Intel® Xeon® Scalable Processors
Code Name
Products formerly Sapphire Rapids
Vertical Segment
Server
Processor Number 
6426Y
Lithography 
Intel 7
Use Conditions 
Server/Enterprise
CPU Specifications
Total Cores 
16
Total Threads 
32
Max Turbo Frequency 
4.10 GHz
Processor Base Frequency 
2.50 GHz
Cache 
37.5 MB
Intel® UPI Speed
16 GT/s
Max # of UPI Links 
3
TDP 
185 W
Intel® Speed Select Technology - Performance Profile (Intel® SST-PP)
Config
Active Cores
Base Frequency
TDP
Description
6426Y(0)
16
2.5
185
 
6426Y(1)
12
2.5
165
 
6426Y(2)
4
3.3
150
 
Supplemental Information
Marketing Status
Launched
Launch Date 
Q1'23
Servicing Status 
Baseline Servicing
Embedded Options Available 
Yes
Memory Specifications
Max Memory Size (dependent on memory type) 
4 TB
Memory Types 
Up to DDR5 4800 MT/s 1DPC
Up to DDR5 4400 MT/s 2DPC
Max # of Memory Channels 
8
ECC Memory Supported ‡ 
Yes
Expansion Options
Scalability
2S
PCI Express Revision 
5
Max # of PCI Express Lanes 
80
Package Specifications
Sockets Supported 
FCLGA4677
Package Carrier
E1B
DTS Max
95 °C
TCASE 
80
Package Size
77.5mm x 56.5mm
Intel® On Demand Available Upgrades
Activation Model Products
QAT
DLB
DSA
IAA
SGX512
Analytics Suite 1
 
 
 
1
 
SGX512
 
 
 
 
512
Advanced Technologies
Intel® On Demand Activation Model 
Yes
Intel® Data Streaming Accelerator (DSA)
1 default devices
Intel® Advanced Matrix Extensions (AMX)
Yes
Intel® Speed Select Technology – Core Power 
Yes
Intel® Speed Select Technology – Turbo Frequency 
Yes
Intel® Deep Learning Boost (Intel® DL Boost) on CPU 
Yes
Intel® Speed Select Technology - Performance Profile 
Yes
Intel® Speed Select Technology - Base Frequency 
Yes
High Priority Cores
4
High Priority Core Frequency
2.70 GHz
Low Priority Cores
12
Intel® Resource Director Technology (Intel® RDT) 
Yes
Intel® Speed Shift Technology 
Yes
Intel® Turbo Boost Technology ‡ 
2.0
Intel® Hyper-Threading Technology ‡ 
Yes
Intel® Transactional Synchronization Extensions 
Yes
Intel® 64 ‡ 
Yes
Instruction Set Extensions 
Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
# of AVX-512 FMA Units 
2
Security & Reliability
Intel® Crypto Acceleration 
Yes
Intel® QuickAssist Software Acceleration
Yes
Intel® Platform Firmware Resilience Support
Yes
Intel® Control-Flow Enforcement Technology 
Yes
Intel® Total Memory Encryption 
Yes
Intel® AES New Instructions 
Yes
Intel® Software Guard Extensions (Intel® SGX) 
Yes with Intel® SPS
Default Maximum Enclave Page Cache (EPC) Size for Intel® SGX
128 GB
Intel® OS Guard
Yes
Intel® Trusted Execution Technology ‡ 
Yes
Execute Disable Bit ‡ 
Yes
Intel® Boot Guard 
Yes
Intel® Run Sure Technology 
Yes
Mode-based Execute Control (MBEC) 
Yes
Intel® Virtualization Technology (VT-x) ‡ 
Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡ 
Yes
Intel® VT-x with Extended Page Tables (EPT) ‡ 
Yes