Intel Xeon E5-4660 v3 vs Intel Xeon E5-4640

Comparative analysis of Intel Xeon E5-4660 v3 and Intel Xeon E5-4640 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 E5-4660 v3

Intel Xeon E5-4640

Differences

Reasons to consider the Intel Xeon E5-4660 v3

6 more cores, run more applications at once: 14 vs 8
12 more threads: 28 vs 16
Around 4% higher clock speed: 2.90 GHz vs 2.80 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 32 nm
2x more maximum memory size: 768 GB vs 384 GB
Around 12% better performance in PassMark - Single thread mark: 1558 vs 1392

Specifications (specs)
Number of cores	14 vs 8
Number of threads	28 vs 16
Maximum frequency	2.90 GHz vs 2.80 GHz
Manufacturing process technology	22 nm vs 32 nm
Maximum memory size	768 GB vs 384 GB
Benchmarks
PassMark - Single thread mark	1558 vs 1392

Reasons to consider the Intel Xeon E5-4640

Around 26% lower typical power consumption: 95 Watt vs 120 Watt
Around 50% better performance in PassMark - CPU mark: 21374 vs 14256

Specifications (specs)
Thermal Design Power (TDP)	95 Watt vs 120 Watt
Benchmarks
PassMark - CPU mark	21374 vs 14256

Compare benchmarks

CPU 1: Intel Xeon E5-4660 v3
CPU 2: Intel Xeon E5-4640

PassMark - Single thread mark

CPU 1

CPU 2

1558

1392

PassMark - CPU mark

CPU 1

CPU 2

14256

21374

Name	Intel Xeon E5-4660 v3	Intel Xeon E5-4640
PassMark - Single thread mark	1558	1392
PassMark - CPU mark	14256	21374

Compare specifications (specs)

	Intel Xeon E5-4660 v3	Intel Xeon E5-4640
Essentials
Architecture codename	Haswell	Sandy Bridge EP
Launch date	Q2'15	May 2012
Place in performance rating	1410	1402
Processor Number	E5-4660V3	E5-4640
Series	Intel® Xeon® Processor E5 v3 Family	Intel® Xeon® Processor E5 Family
Status	Launched	Discontinued
Vertical segment	Server	Server
Launch price (MSRP)		$2,730
Price now		$2,730
Value for money (0-100)		1.14
Performance
64 bit support
Base frequency	2.10 GHz	2.40 GHz
Bus Speed	9.6 GT/s QPI	8 GT/s QPI
Manufacturing process technology	22 nm	32 nm
Maximum core temperature	82.5°C
Maximum frequency	2.90 GHz	2.80 GHz
Number of cores	14	8
Number of QPI Links	2	2
Number of threads	28	16
Die size		435 mm
L1 cache		64 KB (per core)
L2 cache		256 KB (per core)
L3 cache		20480 KB (shared)
Transistor count		2270 million
VID voltage range		0.6V-1.35V
Memory
Max memory channels	4	4
Maximum memory bandwidth	68 GB/s	51.2 GB/s
Maximum memory size	768 GB	384 GB
Supported memory types	DDR4	DDR3 800/1066/1333/1600
ECC memory support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	4	4
Package Size	52.5mm x 51mm	52.5mm x 45.0mm
Sockets supported	FCLGA2011-3	FCLGA2011
Thermal Design Power (TDP)	120 Watt	95 Watt
Peripherals
Max number of PCIe lanes	40	40
PCI Express revision	3.0	3.0
PCIe configurations	x4, x8, x16
Scalability	4S	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
Idle States
Instruction set extensions	Intel® AVX2	Intel® AVX
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
Intel® Advanced Vector Extensions (AVX)
Intel® Demand Based Switching
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)