Product comparison · 2 cpus

HP Intel Celeron G540 vs NEC Intel Xeon E5640

32specifications compared
21differ
11identical
29known for one product only

Key differences

The NEC Intel Xeon E5640 has 0.16 GHz more processor base frequency than the HP Intel Celeron G540 (2.66 GHz vs 2.5 GHz). The NEC Intel Xeon E5640 has 2 more processor cores than the HP Intel Celeron G540 (4 vs 2). The NEC Intel Xeon E5640 has 6 more processor threads than the HP Intel Celeron G540 (8 vs 2). Only the HP Intel Celeron G540 has on-board graphics card. Only the NEC Intel Xeon E5640 has Intel Trusted Execution Technology.

Processor family
- Intel Celeron G540:Intel® Celeron® G
- Intel Xeon E5640:Intel® Xeon® 5000 Sequence
Processor model
- Intel Celeron G540:G540
- Intel Xeon E5640:E5640
Processor base frequency
- Intel Celeron G540:2.5 GHz
- Intel Xeon E5640:2.66 GHz
Processor cores
- Intel Celeron G540:2
- Intel Xeon E5640:4
Processor socket
- Intel Celeron G540:LGA 1156 (Socket H)
- Intel Xeon E5640:Socket B (LGA 1366)
Processor threads
- Intel Celeron G540:2
- Intel Xeon E5640:8
System bus rate
- Intel Celeron G540:5 GT/s
- Intel Xeon E5640:5.86 GT/s
Processor cache
- Intel Celeron G540:2 MB
- Intel Xeon E5640:12 MB

Side by side

Differences highlightedShow differences only

Comparison of Intel Celeron G540, Intel Xeon E5640
61 specifications	A HP Intel Celeron G540 View product	B NEC Intel Xeon E5640 View product
Processor10 differ
Processor familyDiffers	Intel® Celeron® G	Intel® Xeon® 5000 Sequence
Processor modelDiffers	G540	E5640
Processor base frequencyDiffers	2.5 GHz	2.66 GHz
Processor coresDiffers	2	4
Processor socketDiffers	LGA 1156 (Socket H)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Package typeKnown for one	Tray	Unknown — not stated by the source
Processor threadsDiffers	2	8
System bus rateDiffers	5 GT/s	5.86 GT/s
Processor operating modes	64-bit	64-bit
Processor cacheDiffers	2 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	65 W	80 W
Memory bandwidth supported by processor (max)Differs	17 GB/s	25.6 GB/s
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Processor boost frequencyKnown for one	Unknown — not stated by the source	2.93 GHz
VID Voltage RangeKnown for one	Unknown — not stated by the source	0.75 - 1.35 V
SteppingKnown for one	Unknown — not stated by the source	B1
Bus typeKnown for one	Unknown — not stated by the source	QPI
Number of QPI linksKnown for one	Unknown — not stated by the source	2
Memory3 differ
Maximum internal memory supported by processorDiffers	32 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	1066 MHz	800,1066 MHz
Memory channelsDiffers	Dual-channel	Triple-channel
ECCKnown for one	Unknown — not stated by the source	Yes
Graphics1 differ
On-board graphics cardDiffers	Yes	No
On-board graphics card modelKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card base frequencyKnown for one	850 MHz	Unknown — not stated by the source
On-board graphics card dynamic frequency (max)Known for one	1000 MHz	Unknown — not stated by the source
Number of displays supported (on-board graphics)Known for one	2	Unknown — not stated by the source
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	Yes	Yes
PCI Express slots versionKnown for one	2.0	Unknown — not stated by the source
Supported instruction setsDiffers	SSE4.1, SSE4.2	SSE4.2
Embedded options availableKnown for one	Yes	Unknown — not stated by the source
Market segmentKnown for one	Unknown — not stated by the source	Server
CPU configuration (max)Known for one	Unknown — not stated by the source	2
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Processor special features4 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel FDI TechnologyKnown for one	Yes	Unknown — not stated by the source
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
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	No	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	Yes
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel® vPro™ Platform EligibilityKnown for one	No	Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	Unknown — not stated by the source	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	69.1 °C	77.6 °C
Logistics dataidentical
Harmonized System (HS) codeKnown for one	85423119	Unknown — not stated by the source
Other features1 differ
Intel® Virtualization Technology (Intel® VT)Differs	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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