Intel Xeon E5-2660 vs Intel Xeon L5638

Comparative analysis of Intel Xeon E5-2660 and Intel Xeon L5638 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, 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), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Xeon E5-2660

Intel Xeon L5638

Differences

Reasons to consider the Intel Xeon E5-2660

CPU is newer: launch date 2 year(s) 0 month(s) later
2 more cores, run more applications at once: 8 vs 6
4 more threads: 16 vs 12
Around 25% higher clock speed: 3.00 GHz vs 2.40 GHz
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 67% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 44% better performance in PassMark - Single thread mark: 1357 vs 944
Around 96% better performance in PassMark - CPU mark: 14110 vs 7217

Specifications (specs)
Launch date	March 2012 vs March 2010
Number of cores	8 vs 6
Number of threads	16 vs 12
Maximum frequency	3.00 GHz vs 2.40 GHz
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	256 KB (per core) vs 256 KB (per core)
L3 cache	20480 KB (shared) vs 12288 KB (shared)
Benchmarks
PassMark - Single thread mark	1357 vs 944
PassMark - CPU mark	14110 vs 7217

Reasons to consider the Intel Xeon L5638

Around 16% higher maximum core temperature: 85°C vs 73 °C
Around 58% lower typical power consumption: 60 Watt vs 95 Watt

Maximum core temperature	85°C vs 73 °C
Thermal Design Power (TDP)	60 Watt vs 95 Watt

Compare benchmarks

CPU 1: Intel Xeon E5-2660
CPU 2: Intel Xeon L5638

PassMark - Single thread mark

CPU 1

CPU 2

1357

944

PassMark - CPU mark

CPU 1

CPU 2

14110

7217

Name	Intel Xeon E5-2660	Intel Xeon L5638
PassMark - Single thread mark	1357	944
PassMark - CPU mark	14110	7217
Geekbench 4 - Single Core	549
Geekbench 4 - Multi-Core	4175
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	9.383
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	53.899
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.842
CompuBench 1.5 Desktop - Video Composition (Frames/s)	4.689
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	12.508

Compare specifications (specs)

	Intel Xeon E5-2660	Intel Xeon L5638
Essentials
Architecture codename	Sandy Bridge EP	Westmere EP
Launch date	March 2012	March 2010
Launch price (MSRP)	$85	$90
Place in performance rating	2140	2148
Price now	$102	$69.90
Processor Number	E5-2660	L5638
Series	Intel® Xeon® Processor E5 Family	Legacy Intel® Xeon® Processors
Status	Discontinued	Launched
Value for money (0-100)	32.05	23.41
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.20 GHz	2.00 GHz
Bus Speed	8 GT/s QPI	5.86 GT/s QPI
Die size	435 mm	239 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	20480 KB (shared)	12288 KB (shared)
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	73 °C	85°C
Maximum frequency	3.00 GHz	2.40 GHz
Number of cores	8	6
Number of QPI Links	2	2
Number of threads	16	12
Transistor count	2270 million	1170 million
VID voltage range	0.60V-1.35V	1.0 - 1.5V
Memory
ECC memory support
Max memory channels	4
Maximum memory bandwidth	51.2 GB/s
Maximum memory size	384 GB
Supported memory types	DDR3 800/1066/1333/1600	DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	2
Package Size	52.5mm x 45.0mm
Sockets supported	FCLGA2011	FCLGA1366
Thermal Design Power (TDP)	95 Watt	60 Watt
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)