Product comparison · 2 cpus

Dell Xeon E5620 vs Dell Xeon X5660

45specifications compared
12differ
33identical
4known for one product only

Key differences

The Dell Xeon X5660 has 0.4 GHz more processor base frequency than the Dell Xeon E5620 (2.8 GHz vs 2.4 GHz). The Dell Xeon X5660 has 2 more processor cores than the Dell Xeon E5620 (6 vs 4). The Dell Xeon X5660 has 4 more processor threads than the Dell Xeon E5620 (12 vs 8). Processor model: E5620 on the Dell Xeon E5620, X5660 on the Dell Xeon X5660. Memory clock speeds supported by processor: 800,1066 MHz on the Dell Xeon E5620, 800,1066,1333 MHz on the Dell Xeon X5660.

Processor model
- Xeon E5620:E5620
- Xeon X5660:X5660
Processor base frequency
- Xeon E5620:2.4 GHz
- Xeon X5660:2.8 GHz
Processor cores
- Xeon E5620:4
- Xeon X5660:6
Processor threads
- Xeon E5620:8
- Xeon X5660:12
System bus rate
- Xeon E5620:5.86 GT/s
- Xeon X5660:6.4 GT/s
Processor boost frequency
- Xeon E5620:2.66 GHz
- Xeon X5660:3.2 GHz
Thermal Design Power (TDP)
- Xeon E5620:80 W
- Xeon X5660:95 W
CPU multiplier (bus/core ratio)
- Xeon E5620:18
- Xeon X5660:21

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5620, Xeon X5660
49 specifications	A Dell Xeon E5620 View product	B Dell Xeon X5660 View product
Processor9 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5620	X5660
Processor base frequencyDiffers	2.4 GHz	2.8 GHz
Processor coresDiffers	4	6
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
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	2.66 GHz	3.2 GHz
Processor cache	12 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage Range	0.750 - 1.350 V	0.750 - 1.350 V
Compatible chipsetsKnown for one	Intel® 5520	Unknown — not stated by the source
SteppingKnown for one	B1	Unknown — not stated by the source
Bus type	QPI	QPI
CPU multiplier (bus/core ratio)Differs	18	21
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
Featuresidentical
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	No	No
Market segment	Server	Server
Supported instruction sets	SSE4.2	SSE4.2
CPU configuration (max)	2	2
Physical Address Extension (PAE)	Yes	Yes
Embedded options availableKnown for one	Unknown — not stated by the source	No
Processor special features1 differ
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® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	2.0	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
Operational conditions1 differ
TcaseDiffers	77.6 °C	81.3 °C
Weight & dimensionsidentical
Processor package size	42.5 mm	42.5 mm
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, VT-x	VT-d, VT-x
Graphicsidentical
On-board graphics cardKnown for one	Unknown — not stated by the source	No

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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