Product comparison · 2 cpus

Lenovo Intel Xeon E5-2643 v2 vs Lenovo Intel Xeon E5-4603 v2

46specifications compared
15differ
31identical
8known for one product only

Key differences

Processor model
- Intel Xeon E5-2643 v2:E5-2643V2
- Intel Xeon E5-4603 v2:E5-4603V2
Processor base frequency
- Intel Xeon E5-2643 v2:3.5 GHz
- Intel Xeon E5-4603 v2:2.2 GHz
Processor cores
- Intel Xeon E5-2643 v2:6
- Intel Xeon E5-4603 v2:4
Processor lithography
- Intel Xeon E5-2643 v2:28 nm
- Intel Xeon E5-4603 v2:22 nm
Processor threads
- Intel Xeon E5-2643 v2:12
- Intel Xeon E5-4603 v2:8
System bus rate
- Intel Xeon E5-2643 v2:8 GT/s
- Intel Xeon E5-4603 v2:6.4 GT/s
Processor cache
- Intel Xeon E5-2643 v2:25 MB
- Intel Xeon E5-4603 v2:10 MB
Thermal Design Power (TDP)
- Intel Xeon E5-2643 v2:130 W
- Intel Xeon E5-4603 v2:95 W

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon E5-2643 v2, Intel Xeon E5-4603 v2
54 specifications	A Lenovo Intel Xeon E5-2643 v2 View product	B Lenovo Intel Xeon E5-4603 v2 View product
Processor10 differ
Processor family	Intel® Xeon® E5 V2 Family	Intel® Xeon® E5 V2 Family
Processor modelDiffers	E5-2643V2	E5-4603V2
Processor base frequencyDiffers	3.5 GHz	2.2 GHz
Processor coresDiffers	6	4
Processor socket	LGA 2011 (Socket R)	LGA 2011 (Socket R)
Processor lithographyDiffers	28 nm	22 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	12	8
System bus rateDiffers	8 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyKnown for one	3.8 GHz	Unknown — not stated by the source
Processor cacheDiffers	25 MB	10 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	130 W	95 W
VID Voltage RangeDiffers	0.65 - 1.30 V	0.65 - 1.3 V
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	59.7 GB/s	42.6 GB/s
Processor codenameKnown for one	Unknown — not stated by the source	Ivy Bridge
Memory1 differ
Maximum internal memory supported by processor	768 GB	768 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066,1333,1600,1866 MHz	800,1066,1333 MHz
Memory channels	Quad-channel	Quad-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features2 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	Yes	Yes
Market segment	Server	Server
Maximum number of PCI Express lanes	40	40
PCI Express slots version	3.0	3.0
CPU configuration (max)Differs	2	4
Embedded options available	No	No
ScalabilityDiffers	2S	4S
PCI Express configurationsKnown for one	Unknown — not stated by the source	1x4, 1x8, 1x16
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX
Processor special features1 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Flex Memory AccessKnown for one	No	Unknown — not stated by the source
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)Known for one	No	Unknown — not stated by the source
Intel® Turbo Boost TechnologyDiffers	2.0	No
Intel Demand Based Switching	Yes	Yes
Intel TSX-NI	No	No
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® OS Guard	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® vPro™ Platform EligibilityKnown for one	Yes	Unknown — not stated by the source
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	78 °C	77 °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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