Intel Xeon E3-1285L v4 vs Intel Xeon D-1521

Comparative analysis of Intel Xeon E3-1285L v4 and Intel Xeon D-1521 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Xeon E3-1285L v4

Intel Xeon D-1521

Differences

Reasons to consider the Intel Xeon E3-1285L v4

Around 41% higher clock speed: 3.80 GHz vs 2.70 GHz
Around 43% better performance in PassMark - Single thread mark: 2353 vs 1651
Around 42% better performance in PassMark - CPU mark: 8084 vs 5690

Specifications (specs)
Maximum frequency	3.80 GHz vs 2.70 GHz
Benchmarks
PassMark - Single thread mark	2353 vs 1651
PassMark - CPU mark	8084 vs 5690

Reasons to consider the Intel Xeon D-1521

4x more maximum memory size: 128 GB vs 32 GB
Around 44% lower typical power consumption: 45 Watt vs 65 Watt

Maximum memory size	128 GB vs 32 GB
Thermal Design Power (TDP)	45 Watt vs 65 Watt

Compare benchmarks

CPU 1: Intel Xeon E3-1285L v4
CPU 2: Intel Xeon D-1521

PassMark - Single thread mark

CPU 1

CPU 2

2353

1651

PassMark - CPU mark

CPU 1

CPU 2

8084

5690

Name	Intel Xeon E3-1285L v4	Intel Xeon D-1521
PassMark - Single thread mark	2353	1651
PassMark - CPU mark	8084	5690
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	15.699
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	119.584
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.832
CompuBench 1.5 Desktop - Video Composition (Frames/s)	4.973
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	40.284

Compare specifications (specs)

	Intel Xeon E3-1285L v4	Intel Xeon D-1521
Essentials
Architecture codename	Broadwell	Broadwell
Launch date	Q2'15	Q4'15
Place in performance rating	1487	1492
Processor Number	E3-1285LV4	D-1521
Series	Intel® Xeon® Processor E3 v4 Family	Intel® Xeon® D Processor
Status	Launched	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.40 GHz	2.40 GHz
Bus Speed	5 GT/s DMI
Manufacturing process technology	14 nm	14 nm
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	2	2
Maximum memory bandwidth	29.8 GB/s
Maximum memory size	32 GB	128 GB
Supported memory types	DDR3 and DDR3L 1333/1600/1866 at 1.5V	DDR4, DDR3
Supported memory frequency		2133 MHz
Graphics
eDRAM	128 MB
Execution Units	48
Graphics base frequency	300 MHz
Graphics max dynamic frequency	1.15 GHz
Intel® Clear Video technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® Quick Sync Video
Max video memory	32 GB
Graphics interfaces
Number of displays supported	3
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	FCLGA1150	FCBGA1667
Thermal Design Power (TDP)	65 Watt	45 Watt
Thermal Solution	PCG 2013B
Peripherals
Max number of PCIe lanes	16	32
PCI Express revision	3.0	2.0/3.0
PCIe configurations	1x16	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® OS Guard
Intel® Trusted Execution technology (TXT)
Intel® Secure Key technology
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
General-Purpose Input/Output (GPIO)
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)