Product comparison · 2 cpus

Lenovo Intel Xeon Processor E5640 vs Lenovo Xeon X5660

15specifications compared
7differ
8identical
6known for one product only

Key differences

The Lenovo Xeon X5660 has 0.14 GHz more processor base frequency than the Lenovo Intel Xeon Processor E5640 (2.8 GHz vs 2.66 GHz). The Lenovo Xeon X5660 has 0.54 GT/s more system bus rate than the Lenovo Intel Xeon Processor E5640 (6.4 GT/s vs 5.86 GT/s). The Lenovo Xeon X5660 has 15 W more thermal Design Power (TDP) than the Lenovo Intel Xeon Processor E5640 (95 W vs 80 W). Processor model: E5640 on the Lenovo Intel Xeon Processor E5640, X5660 on the Lenovo Xeon X5660. Processor cache type: L3 on the Lenovo Intel Xeon Processor E5640, L2 on the Lenovo Xeon X5660.

Processor model
- Intel Xeon Processor E5640:E5640
- Xeon X5660:X5660
Processor base frequency
- Intel Xeon Processor E5640:2.66 GHz
- Xeon X5660:2.8 GHz
System bus rate
- Intel Xeon Processor E5640:5.86 GT/s
- Xeon X5660:6.4 GT/s
Processor cache type
- Intel Xeon Processor E5640:L3
- Xeon X5660:L2
Thermal Design Power (TDP)
- Intel Xeon Processor E5640:80 W
- Xeon X5660:95 W
VID Voltage Range
- Intel Xeon Processor E5640:0.8 - 1.3 V
- Xeon X5660:0.800 - 1.300 V
CPU multiplier (bus/core ratio)
- Intel Xeon Processor E5640:20
- Xeon X5660:21

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon Processor E5640, Xeon X5660
21 specifications	A Lenovo Intel Xeon Processor E5640 View product	B Lenovo Xeon X5660 View product
Processor7 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5640	X5660
Processor base frequencyDiffers	2.66 GHz	2.8 GHz
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Package type	Tray	Tray
Component for	Server/workstation	Server/workstation
System bus rateDiffers	5.86 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor cache	12 MB	12 MB
Processor cache typeDiffers	L3	L2
L3 cache speedKnown for one	2.66 GHz	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage RangeDiffers	0.8 - 1.3 V	0.800 - 1.300 V
SteppingKnown for one	B1	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Differs	20	21
Processor codeKnown for one	SLBVC	Unknown — not stated by the source
Processor coresKnown for one	Unknown — not stated by the source	6
Processor front side busKnown for one	Unknown — not stated by the source	1333 MHz
Featuresidentical
Market segment	Server	Server
Operational conditionsidentical
Maximum operating temperatureKnown for one	77.6 °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.

More cpu comparisons

All cpu comparisons