Product comparison · 2 cpus

HP Intel Xeon L5520 vs Lenovo Intel Xeon X5660

16specifications compared
12differ
4identical
13known for one product only

Key differences

The Lenovo Intel Xeon X5660 has 0.54 GHz more processor base frequency than the HP Intel Xeon L5520 (2.8 GHz vs 2.26 GHz). The Lenovo Intel Xeon X5660 has 2 more processor cores than the HP Intel Xeon L5520 (6 vs 4). The HP Intel Xeon L5520 has 13 nm more processor lithography than the Lenovo Intel Xeon X5660 (45 nm vs 32 nm). Processor model: L5520 on the HP Intel Xeon L5520, X5660 on the Lenovo Intel Xeon X5660. Component for: PC on the HP Intel Xeon L5520, Server/workstation on the Lenovo Intel Xeon X5660.

Processor model
- Intel Xeon L5520:L5520
- Intel Xeon X5660:X5660
Processor base frequency
- Intel Xeon L5520:2.26 GHz
- Intel Xeon X5660:2.8 GHz
Processor cores
- Intel Xeon L5520:4
- Intel Xeon X5660:6
Processor lithography
- Intel Xeon L5520:45 nm
- Intel Xeon X5660:32 nm
Component for
- Intel Xeon L5520:PC
- Intel Xeon X5660:Server/workstation
Processor threads
- Intel Xeon L5520:8
- Intel Xeon X5660:12
System bus rate
- Intel Xeon L5520:5.86 GT/s
- Intel Xeon X5660:6.4 GT/s
Processor cache
- Intel Xeon L5520:8 MB
- Intel Xeon X5660:12 MB

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon L5520, Intel Xeon X5660
29 specifications	A HP Intel Xeon L5520 View product	B Lenovo Intel Xeon X5660 View product
Processor11 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	L5520	X5660
Processor base frequencyDiffers	2.26 GHz	2.8 GHz
Processor coresDiffers	4	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component forDiffers	PC	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 cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	60 W	95 W
VID Voltage RangeDiffers	0.750 - 1.350 V	0.800 - 1.300 V
CPU multiplier (bus/core ratio)Differs	17	21
Memory bandwidth supported by processor (max)Known for one	25.6 GB/s	Unknown — not stated by the source
Package typeKnown for one	Unknown — not stated by the source	Tray
L3 cache speedKnown for one	Unknown — not stated by the source	2.80 GHz
Processor front side busKnown for one	Unknown — not stated by the source	1333 MHz
Memoryidentical
Maximum internal memory supported by processorKnown for one	144 GB	Unknown — not stated by the source
Memory clock speeds supported by processorKnown for one	800,1066 MHz	Unknown — not stated by the source
Memory channelsKnown for one	Triple-channel	Unknown — not stated by the source
ECCKnown for one	Yes	Unknown — not stated by the source
Graphicsidentical
On-board graphics cardKnown for one	No	Unknown — not stated by the source
Features1 differ
Market segmentDiffers	Desktop	Server
Processor special featuresidentical
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Yes	Unknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
L1 cacheKnown for one	0.25 MB	Unknown — not stated by the source
Temperature (max)Known for one	70 °C	Unknown — not stated by the source

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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