Intel Xeon E5-4640 v2 vs Intel Xeon E3-1281 v3

Comparative analysis of Intel Xeon E5-4640 v2 and Intel Xeon E3-1281 v3 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 E5-4640 v2

Intel Xeon E3-1281 v3

Differences

Reasons to consider the Intel Xeon E5-4640 v2

6 more cores, run more applications at once: 10 vs 4
12 more threads: 20 vs 8
24x more maximum memory size: 768 GB vs 32 GB
2.5x better performance in PassMark - CPU mark: 19028 vs 7463

Specifications (specs)
Number of cores	10 vs 4
Number of threads	20 vs 8
Maximum memory size	768 GB vs 32 GB
Max number of CPUs in a configuration	4 vs 1
Benchmarks
PassMark - CPU mark	19028 vs 7463

Reasons to consider the Intel Xeon E3-1281 v3

Around 52% higher clock speed: 4.10 GHz vs 2.70 GHz
Around 16% lower typical power consumption: 82 Watt vs 95 Watt
Around 70% better performance in PassMark - Single thread mark: 2331 vs 1373

Specifications (specs)
Maximum frequency	4.10 GHz vs 2.70 GHz
Thermal Design Power (TDP)	82 Watt vs 95 Watt
Benchmarks
PassMark - Single thread mark	2331 vs 1373

Compare benchmarks

CPU 1: Intel Xeon E5-4640 v2
CPU 2: Intel Xeon E3-1281 v3

PassMark - Single thread mark

CPU 1

CPU 2

1373

2331

PassMark - CPU mark

CPU 1

CPU 2

19028

7463

Name	Intel Xeon E5-4640 v2	Intel Xeon E3-1281 v3
PassMark - Single thread mark	1373	2331
PassMark - CPU mark	19028	7463
Geekbench 4 - Single Core		1005
Geekbench 4 - Multi-Core		3597

Compare specifications (specs)

	Intel Xeon E5-4640 v2	Intel Xeon E3-1281 v3
Essentials
Architecture codename	Ivy Bridge EP	Haswell
Launch date	Q1'14	Q2'14
Place in performance rating	1396	1386
Processor Number	E5-4640V2	E3-1281V3
Series	Intel® Xeon® Processor E5 v2 Family	Intel® Xeon® Processor E3 v3 Family
Status	Launched	Launched
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.20 GHz	3.70 GHz
Bus Speed	8 GT/s QPI	5 GT/s DMI2
Manufacturing process technology	22 nm	22 nm
Maximum core temperature	75°C
Maximum frequency	2.70 GHz	4.10 GHz
Number of cores	10	4
Number of QPI Links	2	0
Number of threads	20	8
VID voltage range	0.65-1.30V
Memory
Max memory channels	4	2
Maximum memory bandwidth	59.7 GB/s	25.6 GB/s
Maximum memory size	768 GB	32 GB
Supported memory types	DDR3 800/1066/1333/1600/1866	DDR3 and DDR3L 1333/1600 at 1.5V
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	4	1
Package Size	52.5 mm x 45 mm	37.5mm x 37.5mm
Sockets supported	FCLGA2011	FCLGA1150
Thermal Design Power (TDP)	95 Watt	82 Watt
Thermal Solution		PCG 2013D
Peripherals
Max number of PCIe lanes	40	16
PCI Express revision	3.0	3.0
PCIe configurations	x4, x8, x16	1x16, 2x8, 1x8/2x4
Scalability	4S Only	1S Only
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
Idle States
Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	46-bit
Thermal Monitoring
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)