Intel Xeon E-2456 vs Intel Xeon E5-2643 v2

Comparative analysis of Intel Xeon E-2456 and Intel Xeon E5-2643 v2 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 E-2456

Intel Xeon E5-2643 v2

Differences

Reasons to consider the Intel Xeon E-2456

CPU is newer: launch date 10 year(s) 3 month(s) later
Around 34% higher clock speed: 5.1 GHz vs 3.80 GHz
Around 35% higher maximum core temperature: 100°C vs 74°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 10 nm vs 22 nm
Around 25% more L1 cache; more data can be stored in the L1 cache for quick access later
5x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 20% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 63% lower typical power consumption: 80 Watt vs 130 Watt
Around 79% better performance in PassMark - Single thread mark: 3540 vs 1978
Around 19% better performance in PassMark - CPU mark: 20476 vs 17175

Specifications (specs)
Launch date	14 Dec 2023 vs September 2013
Maximum frequency	5.1 GHz vs 3.80 GHz
Maximum core temperature	100°C vs 74°C
Manufacturing process technology	10 nm vs 22 nm
L1 cache	80 KB (per core) vs 64 KB (per core)
L2 cache	1.25 MB (per core) vs 256 KB (per core)
L3 cache	18 MB (shared) vs 15360 KB (shared)
Thermal Design Power (TDP)	80 Watt vs 130 Watt
Benchmarks
PassMark - Single thread mark	3540 vs 1978
PassMark - CPU mark	20476 vs 17175

Reasons to consider the Intel Xeon E5-2643 v2

Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: Intel Xeon E-2456
CPU 2: Intel Xeon E5-2643 v2

PassMark - Single thread mark

CPU 1

CPU 2

3540

1978

PassMark - CPU mark

CPU 1

CPU 2

20476

17175

Name	Intel Xeon E-2456	Intel Xeon E5-2643 v2
PassMark - Single thread mark	3540	1978
PassMark - CPU mark	20476	17175
Geekbench 4 - Single Core		3641
Geekbench 4 - Multi-Core		18673

Compare specifications (specs)

	Intel Xeon E-2456	Intel Xeon E5-2643 v2
Essentials
Launch date	14 Dec 2023	September 2013
Launch price (MSRP)	$375	$2,200
Place in performance rating	346	358
Architecture codename		Ivy Bridge EP
Price now		$2,641.75
Processor Number		E5-2643V2
Series		Intel® Xeon® Processor E5 v2 Family
Status		Launched
Value for money (0-100)		1.43
Vertical segment		Server
Performance
Base frequency	3.3 GHz	3.50 GHz
Die size	163 mm²	160 mm
L1 cache	80 KB (per core)	64 KB (per core)
L2 cache	1.25 MB (per core)	256 KB (per core)
L3 cache	18 MB (shared)	15360 KB (shared)
Manufacturing process technology	10 nm	22 nm
Maximum core temperature	100°C	74°C
Maximum frequency	5.1 GHz	3.80 GHz
Number of cores	6	6
Number of threads	12	12
Unlocked
64 bit support
Bus Speed		8 GT/s QPI
Number of QPI Links		2
Transistor count		1400 million
VID voltage range		0.65–1.30V
Memory
ECC memory support
Supported memory types	DDR5	DDR3 800/1066/1333/1600/1866
Max memory channels		4
Maximum memory bandwidth		59.7 GB/s
Maximum memory size		768 GB
Compatibility
Max number of CPUs in a configuration	1	2
Sockets supported	1700	FCLGA2011
Thermal Design Power (TDP)	80 Watt	130 Watt
Low Halogen Options Available
Package Size		52.5mm x 45mm
Peripherals
PCIe configurations	Gen 5, 16 Lanes, (CPU only)	x4, x8, x16
Max number of PCIe lanes		40
PCI Express revision		3.0
Scalability		2S Only
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® AVX
Intel 64
Intel® Advanced Vector Extensions (AVX)
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
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)