Product comparison · 2 cpus

Dell Xeon E5640 vs HP Intel Celeron B840

20specifications compared
17differ
3identical
24known for one product only

Key differences

Processor family
- Xeon E5640:Intel® Xeon® 5000 Sequence
- Intel Celeron B840:Intel® Celeron®
Processor model
- Xeon E5640:E5640
- Intel Celeron B840:B840
Processor base frequency
- Xeon E5640:2.66 GHz
- Intel Celeron B840:1.9 GHz
Processor cores
- Xeon E5640:4
- Intel Celeron B840:2
Processor socket
- Xeon E5640:Socket B (LGA 1366)
- Intel Celeron B840:PGA988
Processor threads
- Xeon E5640:8
- Intel Celeron B840:2
System bus rate
- Xeon E5640:5.86 GT/s
- Intel Celeron B840:5 GT/s
Processor cache
- Xeon E5640:12 MB
- Intel Celeron B840:2 MB

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5640, Intel Celeron B840
44 specifications	A Dell Xeon E5640 View product	B HP Intel Celeron B840 View product
Processor10 differ
Processor familyDiffers	Intel® Xeon® 5000 Sequence	Intel® Celeron®
Processor modelDiffers	E5640	B840
Processor base frequencyDiffers	2.66 GHz	1.9 GHz
Processor coresDiffers	4	2
Processor socketDiffers	Socket B (LGA 1366)	PGA988
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Processor threadsDiffers	8	2
System bus rateDiffers	5.86 GT/s	5 GT/s
Processor boost frequencyKnown for one	2.93 GHz	Unknown — not stated by the source
Processor cacheDiffers	12 MB	2 MB
Thermal Design Power (TDP)Differs	80 W	35 W
VID Voltage RangeKnown for one	0.75 - 1.35 V	Unknown — not stated by the source
Bus typeKnown for one	QPI	Unknown — not stated by the source
Number of QPI linksKnown for one	2	Unknown — not stated by the source
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	21.3 GB/s
Package typeKnown for one	Unknown — not stated by the source	Tray
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	19
Memory4 differ
Maximum internal memory supported by processorDiffers	288 GB	16 GB
Memory types supported by processorKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speeds supported by processorDiffers	800,1066 MHz	1066,1333 MHz
Memory channelsDiffers	Triple-channel	Dual-channel
ECCDiffers	Yes	No
Graphics1 differ
On-board graphics cardDiffers	No	Yes
On-board graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics
Featuresidentical
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Idle StatesKnown for one	Yes	Unknown — not stated by the source
Market segmentKnown for one	Server	Unknown — not stated by the source
Supported instruction setsKnown for one	AES, SSE4.2	Unknown — not stated by the source
CPU configuration (max)Known for one	2	Unknown — not stated by the source
Processor special features2 differ
Enhanced Intel SpeedStep TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Turbo Boost TechnologyDiffers	Yes	No
Intel Demand Based SwitchingKnown for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Yes	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	Unknown — not stated by the source	No
Intel® My WiFi Technology (Intel® MWT)Known for one	Unknown — not stated by the source	Yes
Intel® vPro™ Platform EligibilityKnown for one	Unknown — not stated by the source	No
Operational conditionsidentical
TcaseKnown for one	77.6 °C	Unknown — not stated by the source
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)Known for one	VT-d, VT-x	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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