Intel Xeon D-1521 vs Intel Xeon E3-1275 v3

Comparative analysis of Intel Xeon D-1521 and Intel Xeon E3-1275 v3 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization, Graphics, Graphics interfaces. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s).

Intel Xeon D-1521

Intel Xeon E3-1275 v3

Differences

Reasons to consider the Intel Xeon D-1521

A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 22 nm
4x more maximum memory size: 128 GB vs 32 GB
Around 87% lower typical power consumption: 45 Watt vs 84 Watt

Manufacturing process technology	14 nm vs 22 nm
Maximum memory size	128 GB vs 32 GB
Thermal Design Power (TDP)	45 Watt vs 84 Watt

Reasons to consider the Intel Xeon E3-1275 v3

Around 44% higher clock speed: 3.90 GHz vs 2.70 GHz
Around 33% better performance in PassMark - Single thread mark: 2201 vs 1655
Around 26% better performance in PassMark - CPU mark: 7195 vs 5699

Specifications (specs)
Maximum frequency	3.90 GHz vs 2.70 GHz
Benchmarks
PassMark - Single thread mark	2201 vs 1655
PassMark - CPU mark	7195 vs 5699

Compare benchmarks

CPU 1: Intel Xeon D-1521
CPU 2: Intel Xeon E3-1275 v3

PassMark - Single thread mark

CPU 1

CPU 2

1655

2201

PassMark - CPU mark

CPU 1

CPU 2

5699

7195

Name	Intel Xeon D-1521	Intel Xeon E3-1275 v3
PassMark - Single thread mark	1655	2201
PassMark - CPU mark	5699	7195
Geekbench 4 - Single Core		909
Geekbench 4 - Multi-Core		3422
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		16.134

Compare specifications (specs)

	Intel Xeon D-1521	Intel Xeon E3-1275 v3
Essentials
Architecture codename	Broadwell	Haswell
Launch date	Q4'15	June 2013
Place in performance rating	1510	1517
Processor Number	D-1521	E3-1275 v3
Series	Intel® Xeon® D Processor	Intel® Xeon® Processor E3 v3 Family
Status	Launched	Launched
Vertical segment	Server	Server
Launch price (MSRP)		$531
Price now		$400.99
Value for money (0-100)		7.26
Performance
64 bit support
Base frequency	2.40 GHz	3.50 GHz
Manufacturing process technology	14 nm	22 nm
Maximum frequency	2.70 GHz	3.90 GHz
Number of cores	4	4
Number of threads	8	8
Bus Speed		5 GT/s DMI
Die size		160 mm
L1 cache		64 KB (per core)
L2 cache		256 KB (per core)
L3 cache		8192 KB (shared)
Number of QPI Links		0
Transistor count		1400 million
Memory
Max memory channels	2	2
Maximum memory size	128 GB	32 GB
Supported memory frequency	2133 MHz
Supported memory types	DDR4, DDR3	DDR3 and DDR3L 1333/1600 at 1.5V
ECC memory support
Maximum memory bandwidth		25.6 GB/s
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	FCBGA1667	FCLGA1150
Thermal Design Power (TDP)	45 Watt	84 Watt
Thermal Solution		PCG 2013D
Peripherals
Integrated LAN
Max number of PCIe lanes	32	16
Number of USB ports	8
PCI Express revision	2.0/3.0	3.0
PCIe configurations	x4 x8 x16	1x16, 2x8, 1x8/2x4
Scalability	1S Only	1S Only
Total number of SATA ports	6
UART
USB revision	2.0/3.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Anti-Theft technology
Intel® Identity Protection technology
Advanced Technologies
Enhanced Intel SpeedStep® technology
General-Purpose Input/Output (GPIO)
Idle States
Instruction set extensions	Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Thermal Monitoring
Flexible Display interface (FDI)
Intel® Advanced Vector Extensions (AVX)
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Stable Image Platform Program (SIPP)
Intel® vPro™ Platform Eligibility
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
Graphics
Graphics base frequency		350 MHz
Graphics max dynamic frequency		1.25 GHz
Graphics max frequency		1.25 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics		Intel HD Graphics P4600
Graphics interfaces
Number of displays supported		3