Intel Xeon E3-1265L v4 vs Intel Xeon E5-2643 v2

Comparative analysis of Intel Xeon E3-1265L v4 and Intel Xeon E5-2643 v2 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), Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Xeon E3-1265L v4

Intel Xeon E5-2643 v2

Differences

Reasons to consider the Intel Xeon E3-1265L v4

A newer manufacturing process allows for a more powerful, yet cooler running processor: 14 nm vs 22 nm
3.7x lower typical power consumption: 35 Watt vs 130 Watt
Around 5% better performance in PassMark - Single thread mark: 2073 vs 1976

Specifications (specs)
Manufacturing process technology	14 nm vs 22 nm
Thermal Design Power (TDP)	35 Watt vs 130 Watt
Benchmarks
PassMark - Single thread mark	2073 vs 1976

Reasons to consider the Intel Xeon E5-2643 v2

2 more cores, run more applications at once: 6 vs 4
4 more threads: 12 vs 8
Around 15% higher clock speed: 3.80 GHz vs 3.30 GHz
24x more maximum memory size: 768 GB vs 32 GB
2.5x better performance in PassMark - CPU mark: 17142 vs 6954

Specifications (specs)
Number of cores	6 vs 4
Number of threads	12 vs 8
Maximum frequency	3.80 GHz vs 3.30 GHz
Maximum memory size	768 GB vs 32 GB
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - CPU mark	17142 vs 6954

Compare benchmarks

CPU 1: Intel Xeon E3-1265L v4
CPU 2: Intel Xeon E5-2643 v2

PassMark - Single thread mark

CPU 1

CPU 2

2073

1976

PassMark - CPU mark

CPU 1

CPU 2

6954

17142

Name	Intel Xeon E3-1265L v4	Intel Xeon E5-2643 v2
PassMark - Single thread mark	2073	1976
PassMark - CPU mark	6954	17142
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	29.922
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	442.578
CompuBench 1.5 Desktop - T-Rex (Frames/s)	2.456
CompuBench 1.5 Desktop - Video Composition (Frames/s)	25.79
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	62.686
Geekbench 4 - Single Core		3641
Geekbench 4 - Multi-Core		18673

Compare specifications (specs)

	Intel Xeon E3-1265L v4	Intel Xeon E5-2643 v2
Essentials
Architecture codename	Broadwell	Ivy Bridge EP
Launch date	Q2'15	September 2013
Place in performance rating	445	301
Processor Number	E3-1265LV4	E5-2643V2
Series	Intel® Xeon® Processor E3 v4 Family	Intel® Xeon® Processor E5 v2 Family
Status	Launched	Launched
Vertical segment	Server	Server
Launch price (MSRP)		$2,200
Price now		$2,641.75
Value for money (0-100)		1.43
Performance
64 bit support
Base frequency	2.30 GHz	3.50 GHz
Bus Speed	5 GT/s DMI	8 GT/s QPI
Manufacturing process technology	14 nm	22 nm
Maximum frequency	3.30 GHz	3.80 GHz
Number of cores	4	6
Number of QPI Links	0	2
Number of threads	8	12
Die size		160 mm
L1 cache		64 KB (per core)
L2 cache		256 KB (per core)
L3 cache		15360 KB (shared)
Maximum core temperature		74°C
Transistor count		1400 million
VID voltage range		0.65–1.30V
Memory
Max memory channels	2	4
Maximum memory bandwidth	29.8 GB/s	59.7 GB/s
Maximum memory size	32 GB	768 GB
Supported memory types	DDR3 and DDR3L 1333/1600/1866 at 1.5V	DDR3 800/1066/1333/1600/1866
ECC memory support
Graphics
eDRAM	128 MB
Execution Units	48
Graphics base frequency	300 MHz
Graphics max dynamic frequency	1.05 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	2
Package Size	37.5mm x 37.5mm	52.5mm x 45mm
Sockets supported	FCLGA1150	FCLGA2011
Thermal Design Power (TDP)	35 Watt	130 Watt
Thermal Solution	PCG 2013B
Peripherals
Max number of PCIe lanes	16	40
PCI Express revision	3.0	3.0
PCIe configurations	1x16	x4, x8, x16
Scalability	1S Only	2S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Trusted Execution technology (TXT)
Intel® Identity Protection technology
Intel® Secure Key technology
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® AVX
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Intel® Advanced Vector Extensions (AVX)
Intel® Demand Based Switching
Intel® Flex Memory Access
Physical Address Extensions (PAE)		46-bit
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)