Product comparison · 2 cpus

Dell 2x Intel Xeon E7540 vs Dell 2x Intel Xeon L7555

Key differences

Processor model
- 2x Intel Xeon E7540:E7540
- 2x Intel Xeon L7555:L7555
Processor base frequency
- 2x Intel Xeon E7540:2 GHz
- 2x Intel Xeon L7555:1.866 GHz
Processor cores
- 2x Intel Xeon E7540:6
- 2x Intel Xeon L7555:8
Processor threads
- 2x Intel Xeon E7540:12
- 2x Intel Xeon L7555:16
System bus rate
- 2x Intel Xeon E7540:6.4 GT/s
- 2x Intel Xeon L7555:5.86 GT/s
Processor boost frequency
- 2x Intel Xeon E7540:2.266 GHz
- 2x Intel Xeon L7555:2.533 GHz
Processor cache
- 2x Intel Xeon E7540:18 MB
- 2x Intel Xeon L7555:24 MB
Thermal Design Power (TDP)
- 2x Intel Xeon E7540:105 W
- 2x Intel Xeon L7555:95 W

Differences highlightedShow differences only

Comparison of 2x Intel Xeon E7540, 2x Intel Xeon L7555
27 specifications	A Dell 2x Intel Xeon E7540 View product	B Dell 2x Intel Xeon L7555 View product
Processor8 differ
Processor family	Intel® Xeon® 7000 Sequence	Intel® Xeon® 7000 Sequence
Processor modelDiffers	E7540	L7555
Processor base frequencyDiffers	2 GHz	1.866 GHz
Processor coresDiffers	6	8
Processor socket	LGA 1567 (Socket LS)	LGA 1567 (Socket LS)
Processor lithography	45 nm	45 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	12	16
System bus rateDiffers	6.4 GT/s	5.86 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.266 GHz	2.533 GHz
Processor cacheDiffers	18 MB	24 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	105 W	95 W
VID Voltage Range	0.675 - 1.35 V	0.675 - 1.35 V
Stepping	D0	D0
Bus type	QPI	QPI
Graphicsidentical
On-board graphics card	No	No
Featuresidentical
Execute Disable Bit	Yes	Yes
Market segment	Server	Server
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Turbo Boost Technology	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Operational conditions1 differ
TcaseDiffers	64 °C	70 °C
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-x	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.