Intel Xeon E5-4640 v3 vs Intel Xeon D-1521

Comparative analysis of Intel Xeon E5-4640 v3 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.

Intel Xeon E5-4640 v3

Intel Xeon D-1521

Differences

Reasons to consider the Intel Xeon E5-4640 v3

8 more cores, run more applications at once: 12 vs 4
16 more threads: 24 vs 8
6x more maximum memory size: 768 GB vs 128 GB
Around 82% better performance in PassMark - CPU mark: 10372 vs 5690

Specifications (specs)
Number of cores	12 vs 4
Number of threads	24 vs 8
Maximum memory size	768 GB vs 128 GB
Max number of CPUs in a configuration	4 vs 1
Benchmarks
PassMark - CPU mark	10372 vs 5690

Reasons to consider the Intel Xeon D-1521

Around 4% higher clock speed: 2.70 GHz vs 2.60 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 22 nm
2.3x lower typical power consumption: 45 Watt vs 105 Watt
Around 9% better performance in PassMark - Single thread mark: 1651 vs 1514

Specifications (specs)
Maximum frequency	2.70 GHz vs 2.60 GHz
Manufacturing process technology	14 nm vs 22 nm
Thermal Design Power (TDP)	45 Watt vs 105 Watt
Benchmarks
PassMark - Single thread mark	1651 vs 1514

Compare benchmarks

CPU 1: Intel Xeon E5-4640 v3
CPU 2: Intel Xeon D-1521

PassMark - Single thread mark

CPU 1

CPU 2

1514

1651

PassMark - CPU mark

CPU 1

CPU 2

10372

5690

Name	Intel Xeon E5-4640 v3	Intel Xeon D-1521
PassMark - Single thread mark	1514	1651
PassMark - CPU mark	10372	5690

Compare specifications (specs)

	Intel Xeon E5-4640 v3	Intel Xeon D-1521
Essentials
Architecture codename	Haswell	Broadwell
Launch date	Q2'15	Q4'15
Place in performance rating	1486	1492
Processor Number	E5-4640V3	D-1521
Series	Intel® Xeon® Processor E5 v3 Family	Intel® Xeon® D Processor
Status	Launched	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	1.90 GHz	2.40 GHz
Bus Speed	8 GT/s QPI
Manufacturing process technology	22 nm	14 nm
Maximum core temperature	77.6°C
Maximum frequency	2.60 GHz	2.70 GHz
Number of cores	12	4
Number of QPI Links	2
Number of threads	24	8
Memory
Max memory channels	4	2
Maximum memory bandwidth	68 GB/s
Maximum memory size	768 GB	128 GB
Supported memory types	DDR4	DDR4, DDR3
Supported memory frequency		2133 MHz
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	4	1
Package Size	52.5mm x 51mm	37.5mm x 37.5mm
Sockets supported	FCLGA2011-3	FCBGA1667
Thermal Design Power (TDP)	105 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	4S	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® 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® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Instruction Replay Technology
Intel® TSX-NI
Intel® Turbo Boost technology
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)