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Essentials
Product Collection
Vertical Segment
Processor Number
Lithography
Product Collection
 Intel® Xeon® 6 processors Intel® Xeon® 6 processors
Vertical Segment
 Server Server
Processor Number
 6521P 6520P
Lithography
 Intel 3 Intel 3
Product Collection
 Intel® Xeon® 6 processors Intel® Xeon® 6 processors
Vertical Segment
 Server Server
Processor Number
 6521P 6520P
Lithography
 Intel 3 Intel 3
CPU Specifications
Total Cores
Total Threads
Max Turbo Frequency
All Core Turbo Frequency
Processor Base Frequency
Cache
TDP
Intel® UPI Speed
# of UPI Links
Total Cores
 24 24
Total Threads
 48 48
Max Turbo Frequency
 4.1 GHz 4 GHz
All Core Turbo Frequency
 4.1 GHz 3.4 GHz
Processor Base Frequency
 2.6 GHz 2.4 GHz
Cache
 144 MB 144 MB
TDP
 225 W 210 W
Intel® UPI Speed
 24 GT/s
# of UPI Links
 4
Total Cores
 24 24
Total Threads
 48 48
Max Turbo Frequency
 4.1 GHz 4 GHz
All Core Turbo Frequency
 4.1 GHz 3.4 GHz
Processor Base Frequency
 2.6 GHz 2.4 GHz
Cache
 144 MB 144 MB
TDP
 225 W 210 W
Intel® UPI Speed
 24 GT/s
# of UPI Links
 4
Supplemental Information
Marketing Status
Launch Date
Embedded Options Available
Marketing Status
 Launched Launched
Launch Date
 Q1'25 Q1'25
Embedded Options Available
 Yes Yes
Marketing Status
 Launched Launched
Launch Date
 Q1'25 Q1'25
Embedded Options Available
 Yes Yes
Memory Specifications
Max Memory Size (dependent on memory type)
Memory Types
Maximum Memory Speed
Max # of Memory Channels
ECC Memory Supported ‡
Max Memory Size (dependent on memory type)
 4 TB 4 TB
Memory Types
 DDR5(6400MT/s) DDR5(6400MT/s)
Maximum Memory Speed
 6400 MT/s 6400 MT/s
Max # of Memory Channels
 8 8
ECC Memory Supported ‡
 Yes Yes
Max Memory Size (dependent on memory type)
 4 TB 4 TB
Memory Types
 DDR5(6400MT/s) DDR5(6400MT/s)
Maximum Memory Speed
 6400 MT/s 6400 MT/s
Max # of Memory Channels
 8 8
ECC Memory Supported ‡
 Yes Yes
Expansion Options
Scalability
PCI Express Revision
Max # of PCI Express Lanes
Scalability
 1S 2S
PCI Express Revision
 5.0 5.0
Max # of PCI Express Lanes
 136 88
Scalability
 1S 2S
PCI Express Revision
 5.0 5.0
Max # of PCI Express Lanes
 136 88
Package Specifications
Sockets Supported
Package Carrier
DTS Max
TCASE
Package Size
Sockets Supported
 FCLGA4710 FCLGA4710
Package Carrier
 E2B E2B
DTS Max
 100 °C 95 °C
TCASE
 82 °C 79 °C
Package Size
 77.5mm x 56.5mm 77.5mm x 56.5mm
Sockets Supported
 FCLGA4710 FCLGA4710
Package Carrier
 E2B E2B
DTS Max
 100 °C 95 °C
TCASE
 82 °C 79 °C
Package Size
 77.5mm x 56.5mm 77.5mm x 56.5mm
Advanced Technologies
Intel® QuickAssist Technology (QAT)
Intel® Dynamic Load Balancer (DLB)
Intel® Data Streaming Accelerator (DSA)
Intel® In-memory Analytics Accelerator (IAA)
Intel® Advanced Matrix Extensions (AMX)
Intel® Speed Select Technology – Core Power
Intel® Speed Select Technology – Turbo Frequency
Intel® Deep Learning Boost (Intel® DL Boost) on CPU
Intel® Speed Select Technology - Performance Profile
Intel® Speed Select Technology - Base Frequency
High Priority Cores
High Priority Core Frequency
Low Priority Cores
Low Priority Core Frequency
Intel® Resource Director Technology (Intel® RDT)
Intel® Speed Shift Technology
Intel® Turbo Boost Technology ‡
Intel® Hyper-Threading Technology ‡
Intel® Transactional Synchronization Extensions
Intel® 64 ‡
Instruction Set Extensions
# of AVX-512 FMA Units
Intel® Volume Management Device (VMD)
Intel® QuickAssist Technology (QAT)
 3 default devices 2 default devices
Intel® Dynamic Load Balancer (DLB)
 3 default devices 2 default devices
Intel® Data Streaming Accelerator (DSA)
 3 default devices 2 default devices
Intel® In-memory Analytics Accelerator (IAA)
 3 default devices 2 default devices
Intel® Advanced Matrix Extensions (AMX)
 Yes Yes
Intel® Speed Select Technology – Core Power
 Yes Yes
Intel® Speed Select Technology – Turbo Frequency
 Yes Yes
Intel® Deep Learning Boost (Intel® DL Boost) on CPU
 Yes Yes
Intel® Speed Select Technology - Performance Profile
 No Yes
Intel® Speed Select Technology - Base Frequency
 Yes Yes
High Priority Cores
 8 8
High Priority Core Frequency
 2.7 GHz 2.5 GHz
Low Priority Cores
 16 16
Low Priority Core Frequency
 2.5 GHz 2.3 GHz
Intel® Resource Director Technology (Intel® RDT)
 Yes Yes
Intel® Speed Shift Technology
 Yes Yes
Intel® Turbo Boost Technology ‡
 2.0 2.0
Intel® Hyper-Threading Technology ‡
 Yes Yes
Intel® Transactional Synchronization Extensions
 Yes Yes
Intel® 64 ‡
 Yes Yes
Instruction Set Extensions
 Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX
# of AVX-512 FMA Units
 2 2
Intel® Volume Management Device (VMD)
 Yes Yes
Intel® QuickAssist Technology (QAT)
 3 default devices 2 default devices
Intel® Dynamic Load Balancer (DLB)
 3 default devices 2 default devices
Intel® Data Streaming Accelerator (DSA)
 3 default devices 2 default devices
Intel® In-memory Analytics Accelerator (IAA)
 3 default devices 2 default devices
Intel® Advanced Matrix Extensions (AMX)
 Yes Yes
Intel® Speed Select Technology – Core Power
 Yes Yes
Intel® Speed Select Technology – Turbo Frequency
 Yes Yes
Intel® Deep Learning Boost (Intel® DL Boost) on CPU
 Yes Yes
Intel® Speed Select Technology - Performance Profile
 No Yes
Intel® Speed Select Technology - Base Frequency
 Yes Yes
High Priority Cores
 8 8
High Priority Core Frequency
 2.7 GHz 2.5 GHz
Low Priority Cores
 16 16
Low Priority Core Frequency
 2.5 GHz 2.3 GHz
Intel® Resource Director Technology (Intel® RDT)
 Yes Yes
Intel® Speed Shift Technology
 Yes Yes
Intel® Turbo Boost Technology ‡
 2.0 2.0
Intel® Hyper-Threading Technology ‡
 Yes Yes
Intel® Transactional Synchronization Extensions
 Yes Yes
Intel® 64 ‡
 Yes Yes
Instruction Set Extensions
 Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX
# of AVX-512 FMA Units
 2 2
Intel® Volume Management Device (VMD)
 Yes Yes
Security & Reliability
Intel® Trust Domain Extensions (Intel® TDX)
Intel® Secure Key
Intel® Crypto Acceleration
Intel® QuickAssist Software Acceleration
Intel® Platform Firmware Resilience Support
Intel® Control-Flow Enforcement Technology
Intel® Total Memory Encryption - Multi Key
Intel® Total Memory Encryption
Intel® AES New Instructions
Intel® Software Guard Extensions (Intel® SGX)
Default Maximum Enclave Page Cache (EPC) Size for Intel® SGX
Intel® OS Guard
Intel® Trusted Execution Technology ‡
Execute Disable Bit ‡
Intel® Boot Guard
Intel® Run Sure Technology
Mode-based Execute Control (MBEC)
Intel® Virtualization Technology (VT-x) ‡
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
Intel® VT-x with Extended Page Tables (EPT) ‡
Intel® Trust Domain Extensions (Intel® TDX)
 Yes Yes
Intel® Secure Key
 Yes Yes
Intel® Crypto Acceleration
 Yes Yes
Intel® QuickAssist Software Acceleration
 Yes Yes
Intel® Platform Firmware Resilience Support
 Yes Yes
Intel® Control-Flow Enforcement Technology
 Yes Yes
Intel® Total Memory Encryption - Multi Key
 Yes Yes
Intel® Total Memory Encryption
 Yes Yes
Intel® AES New Instructions
 Yes Yes
Intel® Software Guard Extensions (Intel® SGX)
 Yes Yes
Default Maximum Enclave Page Cache (EPC) Size for Intel® SGX
 128 GB 128 GB
Intel® OS Guard
 Yes Yes
Intel® Trusted Execution Technology ‡
 Yes Yes
Execute Disable Bit ‡
 Yes Yes
Intel® Boot Guard
 Yes Yes
Intel® Run Sure Technology
 Yes Yes
Mode-based Execute Control (MBEC)
 Yes Yes
Intel® Virtualization Technology (VT-x) ‡
 Yes Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
 Yes Yes
Intel® VT-x with Extended Page Tables (EPT) ‡
 Yes Yes
Intel® Trust Domain Extensions (Intel® TDX)
 Yes Yes
Intel® Secure Key
 Yes Yes
Intel® Crypto Acceleration
 Yes Yes
Intel® QuickAssist Software Acceleration
 Yes Yes
Intel® Platform Firmware Resilience Support
 Yes Yes
Intel® Control-Flow Enforcement Technology
 Yes Yes
Intel® Total Memory Encryption - Multi Key
 Yes Yes
Intel® Total Memory Encryption
 Yes Yes
Intel® AES New Instructions
 Yes Yes
Intel® Software Guard Extensions (Intel® SGX)
 Yes Yes
Default Maximum Enclave Page Cache (EPC) Size for Intel® SGX
 128 GB 128 GB
Intel® OS Guard
 Yes Yes
Intel® Trusted Execution Technology ‡
 Yes Yes
Execute Disable Bit ‡
 Yes Yes
Intel® Boot Guard
 Yes Yes
Intel® Run Sure Technology
 Yes Yes
Mode-based Execute Control (MBEC)
 Yes Yes
Intel® Virtualization Technology (VT-x) ‡
 Yes Yes
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
 Yes Yes
Intel® VT-x with Extended Page Tables (EPT) ‡
 Yes Yes
Intel® Speed Select Technology - Performance Profile (Intel® SST-PP)
Intel® Speed Select Technology
Intel® Speed Select Technology
 See the specifications
Intel® Speed Select Technology
 See the specifications
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