Product comparison · 2 cpus

Dell Xeon E5540 vs Dell Xeon E5620

42specifications compared
12differ
30identical
10known for one product only

Key differences

Processor model
- Xeon E5540:E5540
- Xeon E5620:E5620
Processor base frequency
- Xeon E5540:2.53 GHz
- Xeon E5620:2.4 GHz
Processor lithography
- Xeon E5540:45 nm
- Xeon E5620:32 nm
Processor boost frequency
- Xeon E5540:2.8 GHz
- Xeon E5620:2.66 GHz
Processor cache
- Xeon E5540:8 MB
- Xeon E5620:12 MB
VID Voltage Range
- Xeon E5540:0.75 - 1.35 V
- Xeon E5620:0.750 - 1.350 V
Stepping
- Xeon E5540:D0
- Xeon E5620:B1
CPU multiplier (bus/core ratio)
- Xeon E5540:19
- Xeon E5620:18

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5540, Xeon E5620
52 specifications	A Dell Xeon E5540 View product	B Dell Xeon E5620 View product
Processor8 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5540	E5620
Processor base frequencyDiffers	2.53 GHz	2.4 GHz
Processor cores	4	4
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threads	8	8
System bus rate	5.86 GT/s	5.86 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.8 GHz	2.66 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)	80 W	80 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	18
Number of QPI links	2	2
Memory bandwidth supported by processor (max)	25.6 GB/s	25.6 GB/s
Package typeKnown for one	Unknown — not stated by the source	Tray
Compatible chipsetsKnown for one	Unknown — not stated by the source	Intel® 5520
Memory1 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 processor	800,1066 MHz	800,1066 MHz
Memory channels	Triple-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics cardKnown for one	No	Unknown — not stated by the source
Featuresidentical
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 availableKnown for one	Yes	Unknown — not stated by the source
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 features2 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 TechnologyDiffers	Yes	2.0
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	77.6 °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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