Product comparison · 2 cpus

Dell Xeon E5540 vs Dell Xeon X5670

44specifications compared
18differ
26identical
6known for one product only

Key differences

The Dell Xeon X5670 has 0.4 GHz more processor base frequency than the Dell Xeon E5540 (2.93 GHz vs 2.53 GHz). The Dell Xeon X5670 has 2 more processor cores than the Dell Xeon E5540 (6 vs 4). The Dell Xeon E5540 has 13 nm more processor lithography than the Dell Xeon X5670 (45 nm vs 32 nm). Only the Dell Xeon E5540 has embedded options available. Only the Dell Xeon X5670 has Intel Trusted Execution Technology.

Processor model
- Xeon E5540:E5540
- Xeon X5670:X5670
Processor base frequency
- Xeon E5540:2.53 GHz
- Xeon X5670:2.93 GHz
Processor cores
- Xeon E5540:4
- Xeon X5670:6
Processor lithography
- Xeon E5540:45 nm
- Xeon X5670:32 nm
Processor threads
- Xeon E5540:8
- Xeon X5670:12
System bus rate
- Xeon E5540:5.86 GT/s
- Xeon X5670:6.4 GT/s
Processor boost frequency
- Xeon E5540:2.8 GHz
- Xeon X5670:3.33 GHz
Processor cache
- Xeon E5540:8 MB
- Xeon X5670:12 MB

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5540, Xeon X5670
50 specifications	A Dell Xeon E5540 View product	B Dell Xeon X5670 View product
Processor13 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5540	X5670
Processor base frequencyDiffers	2.53 GHz	2.93 GHz
Processor coresDiffers	4	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	8	12
System bus rateDiffers	5.86 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.8 GHz	3.33 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
L3 cache speedKnown for one	2.53 GHz	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage RangeDiffers	0.75 - 1.35 V	0.750 - 1.350 V
SteppingDiffers	D0	B1
Bus type	QPI	QPI
CPU multiplier (bus/core ratio)Differs	19	22
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	32 GB/s
Memory2 differ
Maximum internal memory supported by processorDiffers	144 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066 MHz	800,1066,1333 MHz
Memory channels	Triple-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Market segment	Server	Server
Number of Processing Die TransistorsKnown for one	731 M	Unknown — not stated by the source
Processing Die sizeKnown for one	263 mm²	Unknown — not stated by the source
CPU configuration (max)	2	2
Embedded options availableDiffers	Yes	No
Physical Address Extension (PAE)	Yes	Yes
Thermal Monitoring TechnologiesKnown for one	Unknown — not stated by the source	No
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Processor special features1 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost Technology	Yes	Yes
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® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	76 °C	81.3 °C
Weight & dimensionsidentical
Processor package size	42.5 mm	42.5 mm
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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