Product comparison · 2 cpus

Acer Intel Xeon E3-1280 vs Acer Intel Xeon E5-2643 v2

41specifications compared
18differ
23identical
12known for one product only

Key differences

The Acer Intel Xeon E5-2643 v2 has 2 more processor cores than the Acer Intel Xeon E3-1280 (6 vs 4). The Acer Intel Xeon E3-1280 has 10 nm more processor lithography than the Acer Intel Xeon E5-2643 v2 (32 nm vs 22 nm). The Acer Intel Xeon E5-2643 v2 has 4 more processor threads than the Acer Intel Xeon E3-1280 (12 vs 8). Processor family: Intel® Xeon® E3 Family on the Acer Intel Xeon E3-1280, Intel® Xeon® E5 V2 Family on the Acer Intel Xeon E5-2643 v2. Processor model: E3-1280 on the Acer Intel Xeon E3-1280, E5-2643V2 on the Acer Intel Xeon E5-2643 v2.

Processor family
- Intel Xeon E3-1280:Intel® Xeon® E3 Family
- Intel Xeon E5-2643 v2:Intel® Xeon® E5 V2 Family
Processor model
- Intel Xeon E3-1280:E3-1280
- Intel Xeon E5-2643 v2:E5-2643V2
Processor cores
- Intel Xeon E3-1280:4
- Intel Xeon E5-2643 v2:6
Processor socket
- Intel Xeon E3-1280:LGA 1155 (Socket H2)
- Intel Xeon E5-2643 v2:LGA 2011 (Socket R)
Processor lithography
- Intel Xeon E3-1280:32 nm
- Intel Xeon E5-2643 v2:22 nm
Processor threads
- Intel Xeon E3-1280:8
- Intel Xeon E5-2643 v2:12
System bus rate
- Intel Xeon E3-1280:5 GT/s
- Intel Xeon E5-2643 v2:8 GT/s
Processor boost frequency
- Intel Xeon E3-1280:3.9 GHz
- Intel Xeon E5-2643 v2:3.8 GHz

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon E3-1280, Intel Xeon E5-2643 v2
53 specifications	A Acer Intel Xeon E3-1280 View product	B Acer Intel Xeon E5-2643 v2 View product
Processor12 differ
Processor familyDiffers	Intel® Xeon® E3 Family	Intel® Xeon® E5 V2 Family
Processor modelDiffers	E3-1280	E5-2643V2
Processor coresDiffers	4	6
Processor socketDiffers	LGA 1155 (Socket H2)	LGA 2011 (Socket R)
Processor lithographyDiffers	32 nm	22 nm
Processor threadsDiffers	8	12
System bus rateDiffers	5 GT/s	8 GT/s
Processor boost frequencyDiffers	3.9 GHz	3.8 GHz
Processor cacheDiffers	8 MB	25 MB
Thermal Design Power (TDP)Differs	95 W	130 W
SteppingKnown for one	D2	Unknown — not stated by the source
Bus typeDiffers	DMI	QPI
CPU multiplier (bus/core ratio)Known for one	35	Unknown — not stated by the source
Memory bandwidth supported by processor (max)Differs	21 GB/s	59.7 GB/s
VID Voltage RangeKnown for one	Unknown — not stated by the source	0.65 - 1.30 V
Number of QPI linksKnown for one	Unknown — not stated by the source	2
Memory3 differ
Maximum internal memory supported by processorDiffers	32 GB	768 GB
Memory clock speeds supported by processorDiffers	1066,1333 MHz	800,1066,1333,1600,1866 MHz
Memory channelsDiffers	Dual-channel	Quad-channel
Features2 differ
Maximum number of PCI Express lanesKnown for one	2	Unknown — not stated by the source
PCI Express slots versionDiffers	2.0	3.0
CPU configuration (max)Differs	1	2
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX
ScalabilityKnown for one	Unknown — not stated by the source	2S
Processor special featuresidentical
Intel Fast Memory AccessKnown for one	Yes	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	Yes	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for one	Unknown — not stated by the source	Yes
Intel® Secure KeyKnown for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	73.6 °C	74 °C
Weight & dimensionsidentical
Processor package sizeKnown for one	37.5 mm	Unknown — not stated by the source

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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