Product comparison · 2 cpus

Dell Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT) vs Dell Xeon E5640

37specifications compared
12differ
25identical
2known for one product only

Key differences

Processor model
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):X5550
- Xeon E5640:E5640
Processor lithography
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):45 nm
- Xeon E5640:32 nm
System bus rate
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):6.4 GT/s
- Xeon E5640:5.86 GT/s
Processor boost frequency
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):3.06 GHz
- Xeon E5640:2.93 GHz
Processor cache
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):8 MB
- Xeon E5640:12 MB
Thermal Design Power (TDP)
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):95 W
- Xeon E5640:80 W
VID Voltage Range
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):0.750 - 1.350 V
- Xeon E5640:0.75 - 1.35 V
Memory bandwidth supported by processor (max)
- Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT):32 GB/s
- Xeon E5640:25.6 GB/s

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT), Xeon E5640
39 specifications	A Dell Intel Xeon X5550 (2.66GHz, 8M Cache, 6.40 GT/s QPI, Turbo, HT)View product	B Dell Xeon E5640 View product
Processor8 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	X5550	E5640
Processor base frequency	2.66 GHz	2.66 GHz
Processor cores	4	4
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threads	8	8
System bus rateDiffers	6.4 GT/s	5.86 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	3.06 GHz	2.93 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	95 W	80 W
VID Voltage RangeDiffers	0.750 - 1.350 V	0.75 - 1.35 V
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	32 GB/s	25.6 GB/s
Memory2 differ
Maximum internal memory supported by processorDiffers	144 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066,1333 MHz	800,1066 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
CPU configuration (max)	2	2
Supported instruction setsKnown for one	Unknown — not stated by the source	AES, SSE4.2
Processor special features1 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution TechnologyDiffers	No	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)Known for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Operational conditions1 differ
TcaseDiffers	75 °C	77.6 °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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