AMD Opteron 6344 vs Intel Xeon E5649

Comparative analysis of AMD Opteron 6344 and Intel Xeon E5649 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s).

AMD Opteron 6344

Intel Xeon E5649

Differences

Reasons to consider the AMD Opteron 6344

6 more cores, run more applications at once: 12 vs 6
Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
8x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 33% more L3 cache; more data can be stored in the L3 cache for quick access later

Number of cores	12 vs 6
L1 cache	576 KB vs 64 KB (per core)
L2 cache	12 MB vs 256 KB (per core)
L3 cache	16 MB vs 12288 KB (shared)

Reasons to consider the Intel Xeon E5649

Around 47% higher clock speed: 2.93 GHz vs 2 GHz
Around 8% higher maximum core temperature: 76.2°C vs 70.40°C
Around 44% lower typical power consumption: 80 Watt vs 115 Watt
Around 81% better performance in PassMark - Single thread mark: 1216 vs 672
Around 6% better performance in PassMark - CPU mark: 9546 vs 9023

Specifications (specs)
Maximum frequency	2.93 GHz vs 2 GHz
Maximum core temperature	76.2°C vs 70.40°C
Thermal Design Power (TDP)	80 Watt vs 115 Watt
Benchmarks
PassMark - Single thread mark	1216 vs 672
PassMark - CPU mark	9546 vs 9023

Compare benchmarks

CPU 1: AMD Opteron 6344
CPU 2: Intel Xeon E5649

PassMark - Single thread mark

CPU 1

CPU 2

672

1216

PassMark - CPU mark

CPU 1

CPU 2

9023

9546

Name	AMD Opteron 6344	Intel Xeon E5649
PassMark - Single thread mark	672	1216
PassMark - CPU mark	9023	9546
Geekbench 4 - Single Core		470
Geekbench 4 - Multi-Core		2849
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		2.594
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		25.435
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.647

Compare specifications (specs)

	AMD Opteron 6344	Intel Xeon E5649
Essentials
Family	AMD Opteron
OPN Tray	OS6344WKTCGHK
Place in performance rating	2384	2408
Series	AMD Opteron 6300 Series Processor	Legacy Intel® Xeon® Processors
Vertical segment	Server	Server
Architecture codename		Westmere EP
Launch date		February 2011
Launch price (MSRP)		$45
Price now		$115
Processor Number		E5649
Status		Launched
Value for money (0-100)		17.77
Performance
Base frequency	2.6 GHz	2.53 GHz
L1 cache	576 KB	64 KB (per core)
L2 cache	12 MB	256 KB (per core)
L3 cache	16 MB	12288 KB (shared)
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	70.40°C	76.2°C
Maximum frequency	2 GHz	2.93 GHz
Number of cores	12	6
Number of threads	12	12
Unlocked
64 bit support
Bus Speed		5.86 GT/s QPI
Die size		239 mm
Number of QPI Links		2
Transistor count		1170 million
VID voltage range		0.750V-1.350V
Memory
Supported memory frequency	2000 MHz
Supported memory types	DDR3	DDR3 800/1066/1333
ECC memory support
Max memory channels		3
Maximum memory bandwidth		32 GB/s
Maximum memory size		288 GB
Compatibility
Sockets supported	G34	FCLGA1366
Thermal Design Power (TDP)	115 Watt	80 Watt
Low Halogen Options Available
Max number of CPUs in a configuration		2
Package Size		42.5mm X 45mm
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions		Intel® SSE4.2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)		40-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)