Product comparison · 2 cpus

Dell Xeon L5520 vs Dell Xeon X5680

39specifications compared
14differ
25identical
11known for one product only

Key differences

Processor model
- Xeon L5520:L5520
- Xeon X5680:X5680
Processor base frequency
- Xeon L5520:2.26 GHz
- Xeon X5680:3.33 GHz
Processor cores
- Xeon L5520:4
- Xeon X5680:6
Processor lithography
- Xeon L5520:45 nm
- Xeon X5680:32 nm
Processor threads
- Xeon L5520:8
- Xeon X5680:12
System bus rate
- Xeon L5520:5.86 GT/s
- Xeon X5680:6.4 GT/s
Processor cache
- Xeon L5520:8 MB
- Xeon X5680:12 MB
Thermal Design Power (TDP)
- Xeon L5520:60 W
- Xeon X5680:130 W

Side by side

Differences highlightedShow differences only

Comparison of Xeon L5520, Xeon X5680
50 specifications	A Dell Xeon L5520 View product	B Dell Xeon X5680 View product
Processor10 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	L5520	X5680
Processor base frequencyDiffers	2.26 GHz	3.33 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 frequencyKnown for one	Unknown — not stated by the source	3.6 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	60 W	130 W
VID Voltage Range	0.750 - 1.350 V	0.750 - 1.350 V
SteppingDiffers	D0	B1
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	32 GB/s
L3 cache speedKnown for one	2.26 GHz	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	17	Unknown — not stated by the source
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
Featuresidentical
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring TechnologiesKnown for one	Unknown — not stated by the source	No
Market segment	Server	Server
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
CPU configuration (max)Known for one	Unknown — not stated by the source	2
Embedded options available	No	No
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
Physical Address Extension (PAE)Known for one	Yes	Unknown — not stated by the source
Processor special features1 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyKnown for one	Unknown — not stated by the source	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
Operational conditions1 differ
TcaseDiffers	70 °C	78.5 °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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