Product comparison · 2 cpus

Dell Intel Xeon E5645 vs Dell Intel Xeon E5649

40specifications compared
3differ
37identical
4known for one product only

Key differences

Processor model
- Intel Xeon E5645:E5645
- Intel Xeon E5649:E5649
Processor base frequency
- Intel Xeon E5645:2.4 GHz
- Intel Xeon E5649:2.53 GHz
Processor boost frequency
- Intel Xeon E5645:2.67 GHz
- Intel Xeon E5649:2.93 GHz

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon E5645, Intel Xeon E5649
44 specifications	A Dell Intel Xeon E5645 View product	B Dell Intel Xeon E5649 View product
Processor3 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5645	E5649
Processor base frequencyDiffers	2.4 GHz	2.53 GHz
Processor cores	6	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threads	12	12
System bus rate	5.86 GT/s	5.86 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.67 GHz	2.93 GHz
Processor cache	12 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)	80 W	80 W
VID Voltage Range	0.75 - 1.35 V	0.75 - 1.35 V
Stepping	B1	B1
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)	32 GB/s	32 GB/s
Memoryidentical
Maximum internal memory supported by processor	288 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	800,1066,1333 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
Market segment	Server	Server
Supported instruction sets	SSE4.2	SSE4.2
Embedded options availableKnown for one	Yes	Unknown — not stated by the source
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution Technology	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Turbo Boost Technology	Yes	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
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Operational conditionsidentical
Tcase	76.2 °C	76.2 °C
Weight & dimensionsidentical
Processor package sizeKnown for one	42.5 mm	Unknown — not stated by the source
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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