Product comparison · 2 cpus

Dell Xeon E5640 vs Dell Xeon X5650

38specifications compared
9differ
29identical
0known for one product only

Key differences

Processor model
- Xeon E5640:E5640
- Xeon X5650:X5650
Processor cores
- Xeon E5640:4
- Xeon X5650:6
Processor threads
- Xeon E5640:8
- Xeon X5650:12
System bus rate
- Xeon E5640:5.86 GT/s
- Xeon X5650:6.4 GT/s
Processor boost frequency
- Xeon E5640:2.93 GHz
- Xeon X5650:3.06 GHz
Thermal Design Power (TDP)
- Xeon E5640:80 W
- Xeon X5650:95 W
Memory bandwidth supported by processor (max)
- Xeon E5640:25.6 GB/s
- Xeon X5650:32 GB/s
Memory clock speeds supported by processor
- Xeon E5640:800,1066 MHz
- Xeon X5650:800,1066,1333 MHz

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5640, Xeon X5650
38 specifications	A Dell Xeon E5640 View product	B Dell Xeon X5650 View product
Processor7 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5640	X5650
Processor base frequency	2.66 GHz	2.66 GHz
Processor coresDiffers	4	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithography	32 nm	32 nm
Component for	Server/workstation	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 boost frequencyDiffers	2.93 GHz	3.06 GHz
Processor cache	12 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage Range	0.75 - 1.35 V	0.75 - 1.35 V
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	32 GB/s
Memory1 differ
Maximum internal memory supported by processor	288 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066 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	AES, SSE4.2	AES, SSE4.2
CPU configuration (max)	2	2
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution Technology	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Turbo Boost Technology	Yes	Yes
Intel Demand Based Switching	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Operational conditions1 differ
TcaseDiffers	77.6 °C	81.3 °C
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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