AMD Opteron 6344 vs Intel Xeon E5-2643

Comparative analysis of AMD Opteron 6344 and Intel Xeon E5-2643 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.

AMD Opteron 6344

Intel Xeon E5-2643

Differences

Reasons to consider the AMD Opteron 6344

8 more cores, run more applications at once: 12 vs 4
4 more threads: 12 vs 8
2.3x more L1 cache, more data can be stored in the L1 cache for quick access later
12x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 60% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 13% lower typical power consumption: 115 Watt vs 130 Watt

Number of cores	12 vs 4
Number of threads	12 vs 8
L1 cache	576 KB vs 64 KB (per core)
L2 cache	12 MB vs 256 KB (per core)
L3 cache	16 MB vs 10240 KB (shared)
Thermal Design Power (TDP)	115 Watt vs 130 Watt

Reasons to consider the Intel Xeon E5-2643

Around 75% higher clock speed: 3.50 GHz vs 2 GHz
Around 4% higher maximum core temperature: 73°C vs 70.40°C
Around 30% better performance in PassMark - Single thread mark: 1600 vs 1231
Around 61% better performance in PassMark - CPU mark: 9774 vs 6069

Specifications (specs)
Maximum frequency	3.50 GHz vs 2 GHz
Maximum core temperature	73°C vs 70.40°C
Benchmarks
PassMark - Single thread mark	1600 vs 1231
PassMark - CPU mark	9774 vs 6069

Compare benchmarks

CPU 1: AMD Opteron 6344
CPU 2: Intel Xeon E5-2643

PassMark - Single thread mark

CPU 1

CPU 2

1231

1600

PassMark - CPU mark

CPU 1

CPU 2

6069

9774

Name	AMD Opteron 6344	Intel Xeon E5-2643
PassMark - Single thread mark	1231	1600
PassMark - CPU mark	6069	9774
Geekbench 4 - Single Core		638
Geekbench 4 - Multi-Core		2761

Compare specifications (specs)

	AMD Opteron 6344	Intel Xeon E5-2643
Essentials
Family	AMD Opteron
OPN Tray	OS6344WKTCGHK
Place in performance rating	1866	1859
Series	AMD Opteron 6300 Series Processor	Intel® Xeon® Processor E5 Family
Vertical segment	Server	Server
Architecture codename		Sandy Bridge EP
Launch date		March 2012
Launch price (MSRP)		$218
Price now		$2,664
Processor Number		E5-2643
Status		Discontinued
Value for money (0-100)		0.93
Performance
Base frequency	2.6 GHz	3.30 GHz
L1 cache	576 KB	64 KB (per core)
L2 cache	12 MB	256 KB (per core)
L3 cache	16 MB	10240 KB (shared)
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	70.40°C	73°C
Maximum frequency	2 GHz	3.50 GHz
Number of cores	12	4
Number of threads	12	8
Unlocked
64 bit support
Bus Speed		8 GT/s QPI
Die size		294 mm
Number of QPI Links		2
Transistor count		1270 million
VID voltage range		0.60V-1.35V
Memory
Supported memory frequency	2000 MHz
Supported memory types	DDR3	DDR3 800/1066/1333/1600
ECC memory support
Max memory channels		4
Maximum memory bandwidth		51.2 GB/s
Maximum memory size		384 GB
Compatibility
Sockets supported	G34	FCLGA2011
Thermal Design Power (TDP)	115 Watt	130 Watt
Low Halogen Options Available
Max number of CPUs in a configuration		2
Package Size		52.5mm x 45.0mm
Peripherals
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® 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® Turbo Boost technology
Intel® vPro™ Platform Eligibility
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)