Intel Xeon E5-1620 v4 vs Intel Xeon D-1521

Comparative analysis of Intel Xeon E5-1620 v4 and Intel Xeon D-1521 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Xeon E5-1620 v4

Intel Xeon D-1521

Differences

Reasons to consider the Intel Xeon E5-1620 v4

Around 41% higher clock speed: 3.80 GHz vs 2.70 GHz
12x more maximum memory size: 1.5 TB vs 128 GB
Around 32% better performance in PassMark - Single thread mark: 2220 vs 1678
Around 30% better performance in PassMark - CPU mark: 7372 vs 5657

Specifications (specs)
Maximum frequency	3.80 GHz vs 2.70 GHz
Maximum memory size	1.5 TB vs 128 GB
Benchmarks
PassMark - Single thread mark	2220 vs 1678
PassMark - CPU mark	7372 vs 5657

Reasons to consider the Intel Xeon D-1521

3.1x lower typical power consumption: 45 Watt vs 140 Watt

Thermal Design Power (TDP)	45 Watt vs 140 Watt

Compare benchmarks

CPU 1: Intel Xeon E5-1620 v4
CPU 2: Intel Xeon D-1521

PassMark - Single thread mark

CPU 1

CPU 2

2220

1678

PassMark - CPU mark

CPU 1

CPU 2

7372

5657

Name	Intel Xeon E5-1620 v4	Intel Xeon D-1521
PassMark - Single thread mark	2220	1678
PassMark - CPU mark	7372	5657
Geekbench 4 - Single Core	862
Geekbench 4 - Multi-Core	3659

Compare specifications (specs)

	Intel Xeon E5-1620 v4	Intel Xeon D-1521
Essentials
Architecture codename	Broadwell	Broadwell
Launch date	Q2'16	Q4'15
Place in performance rating	1387	1388
Processor Number	E5-1620V4	D-1521
Series	Intel® Xeon® Processor E5 v4 Family	Intel® Xeon® D Processor
Status	Launched	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.50 GHz	2.40 GHz
Bus Speed	0 GT/s QPI
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	69°C
Maximum frequency	3.80 GHz	2.70 GHz
Number of cores	4	4
Number of QPI Links	0
Number of threads	8	8
Memory
Max memory channels	4	2
Maximum memory bandwidth	76.8 GB/s
Maximum memory size	1.5 TB	128 GB
Supported memory types	DDR4 1600/1866/2133/2400	DDR4, DDR3
Supported memory frequency		2133 MHz
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	45mm x 52.5mm	37.5mm x 37.5mm
Sockets supported	FCLGA2011-3	FCBGA1667
Thermal Design Power (TDP)	140 Watt	45 Watt
Peripherals
Max number of PCIe lanes	40	32
PCI Express revision	3.0	2.0/3.0
PCIe configurations	x4, x8, x16	x4 x8 x16
Scalability	1S Only	1S Only
Integrated LAN
Number of USB ports		8
Total number of SATA ports		6
UART
USB revision		2.0/3.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® AVX2	Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)	46-bit
Thermal Monitoring
General-Purpose Input/Output (GPIO)
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)