Product comparison · 2 cpus

HP Intel Xeon E5649 vs Lenovo Intel Xeon X5660

16specifications compared
8differ
8identical
14known for one product only

Key differences

The Lenovo Intel Xeon X5660 has 0.27 GHz more processor base frequency than the HP Intel Xeon E5649 (2.8 GHz vs 2.53 GHz). The Lenovo Intel Xeon X5660 has 0.54 GT/s more system bus rate than the HP Intel Xeon E5649 (6.4 GT/s vs 5.86 GT/s). The Lenovo Intel Xeon X5660 has 15 W more thermal Design Power (TDP) than the HP Intel Xeon E5649 (95 W vs 80 W). Processor model: E5649 on the HP Intel Xeon E5649, X5660 on the Lenovo Intel Xeon X5660. Component for: PC on the HP Intel Xeon E5649, Server/workstation on the Lenovo Intel Xeon X5660.

Processor model
- Intel Xeon E5649:E5649
- Intel Xeon X5660:X5660
Processor base frequency
- Intel Xeon E5649:2.53 GHz
- Intel Xeon X5660:2.8 GHz
Component for
- Intel Xeon E5649:PC
- Intel Xeon X5660:Server/workstation
System bus rate
- Intel Xeon E5649:5.86 GT/s
- Intel Xeon X5660:6.4 GT/s
Thermal Design Power (TDP)
- Intel Xeon E5649:80 W
- Intel Xeon X5660:95 W
VID Voltage Range
- Intel Xeon E5649:0.750 - 1.350 V
- Intel Xeon X5660:0.800 - 1.300 V
CPU multiplier (bus/core ratio)
- Intel Xeon E5649:19
- Intel Xeon X5660:21
Market segment
- Intel Xeon E5649:Desktop
- Intel Xeon X5660:Server

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon E5649, Intel Xeon X5660
30 specifications	A HP Intel Xeon E5649 View product	B Lenovo Intel Xeon X5660 View product
Processor7 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5649	X5660
Processor base frequencyDiffers	2.53 GHz	2.8 GHz
Processor cores	6	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
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	2.93 GHz	Unknown — not stated by the source
Processor cache	12 MB	12 MB
Processor cache type	L3	L3
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	19	21
Memory bandwidth supported by processor (max)Known for one	32 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	288 GB	Unknown — not stated by the source
Memory clock speeds supported by processorKnown for one	800,1066,1333 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	0.375 MB	Unknown — not stated by the source
Temperature (max)Known for one	76.2 °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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