Top 500

Intel Xeon D-1521

Intel Xeon D-1521

Intel Xeon D-1521 is a Server processor from Intel. It began to be released in November 2015. The CPU belongs to the Broadwell family. The processor has 4 cores and 8 threads. And the processor is also made using 14 nm technology. Its characteristics, as well as benchmark results, are presented in more detail below.

Top Server CPU: 428

Basic

Label Name
Intel
Platform
Server
Launch Date
November 2015
Model Name
?
The Intel processor number is just one of several factors - along with processor brand, system configurations, and system-level benchmarks - to be considered when choosing the right processor for your computing needs.
D-1521
Code Name
Broadwell

CPU Specifications

Total Cores
?
Cores is a hardware term that describes the number of independent central processing units in a single computing component (die or chip).
4
Total Threads
?
Where applicable, Intel® Hyper-Threading Technology is only available on Performance-cores.
8
Basic Frequency
2.40 GHz
Max Turbo Frequency
?
Max Turbo Frequency is the maximum single-core frequency at which the processor is capable of operating using Intel® Turbo Boost Technology and, if present, Intel® Turbo Boost Max Technology 3.0 and Intel® Thermal Velocity Boost. Frequency is typically measured in gigahertz (GHz), or billion cycles per second.
2.70 GHz
Intel Turbo Boost Technology 2.0 Frequency
2.70 GHz
Intel Turbo Boost Technology
?
Intel® Turbo Boost Technology dynamically increases the processor's frequency as needed by taking advantage of thermal and power headroom to give you a burst of speed when you need it, and increased energy efficiency when you don’t.
2.0
Intel Hyper-Threading Technology
?
Intel® Hyper-Threading Technology (Intel® HT Technology) delivers two processing threads per physical core. Highly threaded applications can get more work done in parallel, completing tasks sooner.
Yes
L3 Cache
1.5 MB
Cache
?
CPU Cache is an area of fast memory located on the processor. Intel® Smart Cache refers to the architecture that allows all cores to dynamically share access to the last level cache.
6 MB
CPU Socket
?
The socket is the component that provides the mechanical and electrical connections between the processor and motherboard.
FCBGA1667
Technology
?
Lithography refers to the semiconductor technology used to manufacture an integrated circuit, and is reported in nanometer (nm), indicative of the size of features built on the semiconductor.
14 nm
TDP
45 W
PCI Express Version
?
PCI Express Revision is the supported version of the PCI Express standard. Peripheral Component Interconnect Express (or PCIe) is a high-speed serial computer expansion bus standard for attaching hardware devices to a computer. The different PCI Express versions support different data rates.
2.0/3.0
Instruction Set
?
The instruction set is a hard program stored inside the CPU that guides and optimizes CPU operations. With these instruction sets, the CPU can run more efficiently. There are many manufacturers that design CPUs, which results in different instruction sets, such as the 8086 instruction set for the Intel camp and the RISC instruction set for the ARM camp. x86, ARM v8, and MIPS are all codes for instruction sets. Instruction sets can be extended; for example, x86 added 64-bit support to create x86-64. Manufacturers developing CPUs that are compatible with a certain instruction set need authorization from the instruction set patent holder. A typical example is Intel authorizing AMD, enabling the latter to develop CPUs compatible with the x86 instruction set.
64-bit
Intel 64
?
Intel® 64 architecture delivers 64-bit computing on server, workstation, desktop and mobile platforms when combined with supporting software.¹ Intel 64 architecture improves performance by allowing systems to address more than 4 GB of both virtual and physical memory.
Yes
PCI Express Configurations
?
PCI Express (PCIe) Configurations describe the available PCIe lane configurations that can be used to link to PCIe devices.
x4 x8 x16
Max Number of PCI Express Lanes
?
A PCI Express (PCIe) lane consists of two differential signaling pairs, one for receiving data, one for transmitting data, and is the basic unit of the PCIe bus. Max # of PCI Express Lanes is the total number of supported lanes.
32

Memory Specifications

Memory Type
?
Intel® processors come in four different types: Single Channel, Dual Channel, Triple Channel, and Flex Mode. Maximum supported memory speed may be lower when populating multiple DIMMs per channel on products that support multiple memory channels.
DDR4 | DDR3
Max Memory Size
?
Max memory size refers to the maximum memory capacity supported by the processor.
128 GB
Memory Channels
?
The number of memory channels refers to the bandwidth operation for real world application.
2
Maximum Memory Speed
2133 MHz
ECC Memory Supported
?
ECC Memory Supported indicates processor support for Error-Correcting Code memory. ECC memory is a type of system memory that can detect and correct common kinds of internal data corruption. Note that ECC memory support requires both processor and chipset support.
Yes

Miscellaneous

Intel Virtualization Technology (VT-x)
?
Intel® Virtualization Technology (VT-x) allows one hardware platform to function as multiple “virtual” platforms. It offers improved manageability by limiting downtime and maintaining productivity by isolating computing activities into separate partitions.
Yes
Intel Virtualization Technology for Directed I/O (VT-d)
?
Intel® Virtualization Technology for Directed I/O (VT-d) continues from the existing support for IA-32 (VT-x) and Itanium® processor (VT-i) virtualization adding new support for I/O-device virtualization. Intel VT-d can help end users improve security and reliability of the systems and also improve performance of I/O devices in virtualized environments.
Yes
Intel Standard Manageability (ISM)
?
Intel® Standard Manageability is the manageability solution for Intel vPro® Essentials platforms and is a subset of Intel® AMT with out-of-band management over Ethernet and Wi-Fi, but no KVM or new life cycle management features.
Intel® AVX2
Enhanced Intel SpeedStep Technology
?
Enhanced Intel SpeedStep® Technology is an advanced means of enabling high performance while meeting the power-conservation needs of mobile systems. Conventional Intel SpeedStep® Technology switches both voltage and frequency in tandem between high and low levels in response to processor load. Enhanced Intel SpeedStep® Technology builds upon that architecture using design strategies such as Separation between Voltage and Frequency Changes, and Clock Partitioning and Recovery.
Yes
Execute Disable Bit
?
Execute Disable Bit is a hardware-based security feature that can reduce exposure to viruses and malicious-code attacks and prevent harmful software from executing and propagating on the server or network.
Yes
Intel AES New Instructions
?
Intel® AES New Instructions (Intel® AES-NI) are a set of instructions that enable fast and secure data encryption and decryption. AES-NI are valuable for a wide range of cryptographic applications, for example: applications that perform bulk encryption/decryption, authentication, random number generation, and authenticated encryption.
Yes
Intel VT-x with Extended Page Tables (EPT)
?
Intel® VT-x with Extended Page Tables (EPT), also known as Second Level Address Translation (SLAT), provides acceleration for memory intensive virtualized applications. Extended Page Tables in Intel® Virtualization Technology platforms reduces the memory and power overhead costs and increases battery life through hardware optimization of page table management.
Yes
Intel OS Guard
?
Intel OS Guard is a security technology designed to protect operating systems from threats. It is a hardware feature built into Intel processors that helps prevent malicious code from executing in privileged modes of the operating system.
Yes

Passmark CPU

Single Core
1678
Multi Core
5657

Performance

Integer Math
Multi Core
18.6 GOps/Sec
Floating Point Math
Multi Core
11.9 GOps/Sec
Find Prime Numbers
Multi Core
25 M Primes/Sec
Random String Sorting
Multi Core
11.4 M Strings/Sec
Data Encryption
Multi Core
1.6 GB/Sec
Data Compression
Multi Core
81.7 MB/Sec
Physics
Multi Core
462 Frames/Sec
Extended Instructions
Multi Core
4.3 B Matrices/Sec
Single Thread
Multi Core
1.7 GOps/Sec
Show more

Geekbench 6

Single Core
924
Multi Core
3277

Geekbench 5

Single Core
688
Multi Core
2864

Compared to Other CPU

14%
3%
27%
Better then 14% CPU over the past year
Better then 3% CPU over the past 3 years
Better then 27% CPU

SiliconCat Rating

428
Ranks 428 among Server CPU on our website
1265
Ranks 1265 among all CPU on our website
Geekbench 6 Single Core
Ryzen Embedded R2314
AMD, June 2022
1026
Ryzen 7 3700U
AMD, January 2019
970
Xeon D-1521
Intel, November 2015
924
Core m3-7Y30
Intel, July 2016
858
Celeron 6305
Intel, October 2020
778
Geekbench 6 Multi Core
Core i7-8706G
Intel, February 2018
3780
Xeon E3-1505M v5
Intel, October 2015
3547
Xeon D-1521
Intel, November 2015
3277
Ryzen 5 2400G
AMD, February 2018
3089
Core i7-8650U
Intel, August 2017
2892
Geekbench 5 Single Core
Xeon Gold 5220
Intel, April 2019
731
Pentium G4500T
Intel, July 2015
712
Xeon D-1521
Intel, November 2015
688
Celeron G3900T
Intel, October 2015
668
Xeon E5-2430
Intel, May 2012
643
Geekbench 5 Multi Core
Ryzen Embedded V1756B
AMD, February 2018
3122
Xeon E5-1428L
Intel, May 2012
2964
Xeon D-1521
Intel, November 2015
2864
FX-8320
AMD, October 2012
2723
Ryzen 3 PRO 1300
AMD, June 2017
2604
Passmark CPU Single Core
Core i3-3220
Intel, July 2012
1727
Core i5-2500
Intel, January 2011
1707
Xeon D-1521
Intel, November 2015
1678
Atom x7433RE
Intel, April 2024
1646
A12-9800E
AMD, July 2017
1617
Passmark CPU Multi Core
Xeon E3-1230 v2
Intel, May 2012
6182
Xeon E-2104G
Intel, July 2018
5944
Xeon D-1521
Intel, November 2015
5657
Xeon E3-1290
Intel, May 2011
5429
Core i5-6400
Intel, July 2015
5168