Product comparison · 2 cpus

HP Intel Xeon E5645 2nd Processor vs Lenovo Intel Xeon X5660

Key differences

Processor model
- Intel Xeon E5645 2nd Processor:E5645
- Intel Xeon X5660:X5660
Processor base frequency
- Intel Xeon E5645 2nd Processor:2.4 GHz
- Intel Xeon X5660:2.8 GHz
Component for
- Intel Xeon E5645 2nd Processor:PC
- Intel Xeon X5660:Server/workstation
System bus rate
- Intel Xeon E5645 2nd Processor:5.86 GT/s
- Intel Xeon X5660:6.4 GT/s
Processor front side bus
- Intel Xeon E5645 2nd Processor:1066 MHz
- Intel Xeon X5660:1333 MHz
Thermal Design Power (TDP)
- Intel Xeon E5645 2nd Processor:80 W
- Intel Xeon X5660:95 W
VID Voltage Range
- Intel Xeon E5645 2nd Processor:0.750 - 1.350 V
- Intel Xeon X5660:0.800 - 1.300 V
CPU multiplier (bus/core ratio)
- Intel Xeon E5645 2nd Processor:18
- Intel Xeon X5660:21

Differences highlightedShow differences only

Comparison of Intel Xeon E5645 2nd Processor, Intel Xeon X5660
23 specifications	A HP Intel Xeon E5645 2nd Processor View product	B Lenovo Intel Xeon X5660 View product
Processor8 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5645	X5660
Processor base frequencyDiffers	2.4 GHz	2.8 GHz
Processor cores	6	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Package type	Tray	Tray
Component forDiffers	PC	Server/workstation
Processor threads	12	12
System bus rateDiffers	5.86 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyKnown for one	2.67 GHz	Unknown — not stated by the source
Processor cache	12 MB	12 MB
Processor cache type	L3	L3
Processor front side busDiffers	1066 MHz	1333 MHz
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage RangeDiffers	0.750 - 1.350 V	0.800 - 1.300 V
CPU multiplier (bus/core ratio)Differs	18	21
L3 cache speedKnown for one	Unknown — not stated by the source	2.80 GHz
Features1 differ
Market segmentDiffers	Desktop	Server
BandwidthKnown for one	32000 MB/s	Unknown — not stated by the source
Operational conditionsidentical
Maximum operating temperatureKnown for one	76.2 °C	Unknown — not stated by the source
Other featuresidentical
L1 cacheKnown for one	0.384 MB	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.