Intel Xeon E5-2678 v3 vs Intel Xeon E5-4640 v2

Comparative analysis of Intel Xeon E5-2678 v3 and Intel Xeon E5-4640 v2 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: 3DMark Fire Strike - Physics Score, PassMark - Single thread mark, PassMark - CPU mark.

Intel Xeon E5-2678 v3

Intel Xeon E5-4640 v2

Differences

Reasons to consider the Intel Xeon E5-2678 v3

2 more cores, run more applications at once: 12 vs 10
4 more threads: 24 vs 20

Number of cores	12 vs 10
Number of threads	24 vs 20

Reasons to consider the Intel Xeon E5-4640 v2

Around 26% lower typical power consumption: 95 Watt vs 120 Watt

Max number of CPUs in a configuration	4 vs 2
Thermal Design Power (TDP)	95 Watt vs 120 Watt

Compare benchmarks

CPU 1: Intel Xeon E5-2678 v3
CPU 2: Intel Xeon E5-4640 v2

Name	Intel Xeon E5-2678 v3	Intel Xeon E5-4640 v2
3DMark Fire Strike - Physics Score	7451
PassMark - Single thread mark		1373
PassMark - CPU mark		19028

Compare specifications (specs)

	Intel Xeon E5-2678 v3	Intel Xeon E5-4640 v2
Essentials
Architecture codename	Haswell-EP	Ivy Bridge EP
Family	Intel Xeon E5-2600 v3
Place in performance rating	1294	1303
Processor Number	E5-2678 v3	E5-4640V2
Vertical segment	Server	Server
Launch date		Q1'14
Series		Intel® Xeon® Processor E5 v2 Family
Status		Launched
Performance
64 bit support
Base frequency	2500 MHz	2.20 GHz
Bus Speed	5 GT/s DMI	8 GT/s QPI
L1 cache	768 KB
L2 cache	3 MB
L3 cache	30 MB
Manufacturing process technology	22 nm	22 nm
Number of cores	12	10
Number of threads	24	20
Maximum core temperature		75°C
Maximum frequency		2.70 GHz
Number of QPI Links		2
VID voltage range		0.65-1.30V
Memory
Max memory channels	2	4
Supported memory types	DDR4	DDR3 800/1066/1333/1600/1866
Maximum memory bandwidth		59.7 GB/s
Maximum memory size		768 GB
Compatibility
Max number of CPUs in a configuration	2	4
Sockets supported	LGA2011-3 (R3)	FCLGA2011
Thermal Design Power (TDP)	120 Watt	95 Watt
Low Halogen Options Available
Package Size		52.5 mm x 45 mm
Peripherals
Max number of PCIe lanes	40	40
PCI Express revision	3.0	3.0
PCIe configurations		x4, x8, x16
Scalability		4S Only
Security & Reliability
Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Idle States
Instruction set extensions		Intel® AVX
Intel 64
Intel® Demand Based Switching
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)