Product comparison · 2 cpus

Lenovo E5-2640 v2 vs Lenovo E5-2660 v2

46specifications compared
8differ
38identical
1known for one product only

Key differences

Processor model
- E5-2640 v2:E5-2640V2
- E5-2660 v2:E5-2660V2
Processor base frequency
- E5-2640 v2:2 GHz
- E5-2660 v2:2.2 GHz
Processor cores
- E5-2640 v2:8
- E5-2660 v2:10
System bus rate
- E5-2640 v2:7.2 GT/s
- E5-2660 v2:8 GT/s
Processor boost frequency
- E5-2640 v2:2.5 GHz
- E5-2660 v2:3 GHz
Processor cache
- E5-2640 v2:20 MB
- E5-2660 v2:25 MB
Memory bandwidth supported by processor (max)
- E5-2640 v2:51.2 GB/s
- E5-2660 v2:59.7 GB/s
Embedded options available
- E5-2640 v2:Yes
- E5-2660 v2:No

Side by side

Differences highlightedShow differences only

Comparison of E5-2640 v2, E5-2660 v2
47 specifications	A Lenovo E5-2640 v2 View product	B Lenovo E5-2660 v2 View product
Processor7 differ
Processor family	Intel® Xeon® E5 V2 Family	Intel® Xeon® E5 V2 Family
Processor modelDiffers	E5-2640V2	E5-2660V2
Processor base frequencyDiffers	2 GHz	2.2 GHz
Processor coresDiffers	8	10
Processor socket	LGA 2011 (Socket R)	LGA 2011 (Socket R)
Processor lithography	22 nm	22 nm
Component for	Server/workstation	Server/workstation
Processor threadsKnown for one	Unknown — not stated by the source	20
System bus rateDiffers	7.2 GT/s	8 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.5 GHz	3 GHz
Processor cacheDiffers	20 MB	25 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)	95 W	95 W
VID Voltage Range	0.65 - 1.30 V	0.65 - 1.30 V
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	51.2 GB/s	59.7 GB/s
Memoryidentical
Maximum internal memory supported by processor	768 GB	768 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	800,1066,1333,1600,1866 MHz	800,1066,1333,1600,1866 MHz
Memory channels	Quad-channel	Quad-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	Yes	Yes
Market segment	Server	Server
PCI Express slots version	3.0	3.0
Supported instruction sets	AVX	AVX
Embedded options availableDiffers	Yes	No
Scalability	2S	2S
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Flex Memory Access	No	No
Intel Trusted Execution Technology	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)	No	No
Intel® Turbo Boost Technology	2.0	2.0
Intel Demand Based Switching	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® vPro™ Platform Eligibility	Yes	Yes
Operational conditionsidentical
Tcase	75 °C	75 °C
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, VT-x	VT-d, VT-x

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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