Intel Xeon E5-2643 v3 vs Intel Xeon 5120

Comparative analysis of Intel Xeon E5-2643 v3 and Intel Xeon 5120 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 E5-2643 v3

Intel Xeon 5120

Differences

Reasons to consider the Intel Xeon E5-2643 v3

4 more cores, run more applications at once: 6 vs 2
Around 99% higher clock speed: 3.70 GHz vs 1.86 GHz
Around 19% higher maximum core temperature: 77.3°C vs 65°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 65 nm
2.7x better performance in PassMark - Single thread mark: 2062 vs 770
12.1x better performance in PassMark - CPU mark: 17911 vs 1486

Specifications (specs)
Number of cores	6 vs 2
Maximum frequency	3.70 GHz vs 1.86 GHz
Maximum core temperature	77.3°C vs 65°C
Manufacturing process technology	22 nm vs 65 nm
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - Single thread mark	2062 vs 770
PassMark - CPU mark	17911 vs 1486

Reasons to consider the Intel Xeon 5120

2.1x lower typical power consumption: 65 Watt vs 135 Watt

Thermal Design Power (TDP)	65 Watt vs 135 Watt

Compare benchmarks

CPU 1: Intel Xeon E5-2643 v3
CPU 2: Intel Xeon 5120

PassMark - Single thread mark

CPU 1

CPU 2

2062

770

PassMark - CPU mark

CPU 1

CPU 2

17911

1486

Name	Intel Xeon E5-2643 v3	Intel Xeon 5120
PassMark - Single thread mark	2062	770
PassMark - CPU mark	17911	1486
Geekbench 4 - Single Core		3655
Geekbench 4 - Multi-Core		25615

Compare specifications (specs)

	Intel Xeon E5-2643 v3	Intel Xeon 5120
Essentials
Architecture codename	Haswell	Woodcrest
Launch date	Q3'14	June 2006
Place in performance rating	928	446
Processor Number	E5-2643V3	5120
Series	Intel® Xeon® Processor E5 v3 Family	Legacy Intel® Xeon® Processors
Status	Launched	Discontinued
Vertical segment	Server	Server
Launch price (MSRP)		$45
Price now		$1,628.48
Value for money (0-100)		0.23
Performance
64 bit support
Base frequency	3.40 GHz	1.86 GHz
Bus Speed	9.6 GT/s QPI	1066 MHz FSB
Manufacturing process technology	22 nm	65 nm
Maximum core temperature	77.3°C	65°C
Maximum frequency	3.70 GHz	1.86 GHz
Number of cores	6	2
Number of QPI Links	2
Number of threads	12
VID voltage range	0.65V–1.30V	B2=1.0V-1.5V, G0=.85V-1.5V
Die size		143 mm2
L2 cache		4096 KB
Transistor count		291 million
Memory
Max memory channels	4
Maximum memory bandwidth	68 GB/s
Maximum memory size	768 GB
Supported memory types	DDR4 1600/1866/2133	DDR2
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	1
Package Size	52.5mm x 45mm	37.5mm x 37.5mm
Sockets supported	FCLGA2011-3	LGA771
Thermal Design Power (TDP)	135 Watt	65 Watt
Scenario Design Power (SDP)		0 W
Peripherals
Max number of PCIe lanes	40
PCI Express revision	3.0
PCIe configurations	x4, x8, x16
Scalability	2S
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
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 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)	46-bit
Thermal Monitoring
FSB parity
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)