Product comparison · 2 cpus

Dell Intel Xeon X3440 vs Dell Intel Xeon X5660

40specifications compared
17differ
23identical
10known for one product only

Key differences

Processor family
- Intel Xeon X3440:Intel® Xeon® 3000 Sequence
- Intel Xeon X5660:Intel® Xeon® 5000 Sequence
Processor model
- Intel Xeon X3440:X3440
- Intel Xeon X5660:X5660
Processor base frequency
- Intel Xeon X3440:2.53 GHz
- Intel Xeon X5660:2.8 GHz
Processor cores
- Intel Xeon X3440:4
- Intel Xeon X5660:6
Processor socket
- Intel Xeon X3440:LGA 1156 (Socket H)
- Intel Xeon X5660:Socket B (LGA 1366)
Processor lithography
- Intel Xeon X3440:45 nm
- Intel Xeon X5660:32 nm
Processor threads
- Intel Xeon X3440:8
- Intel Xeon X5660:12
System bus rate
- Intel Xeon X3440:2.5 GT/s
- Intel Xeon X5660:6.4 GT/s

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon X3440, Intel Xeon X5660
50 specifications	A Dell Intel Xeon X3440 View product	B Dell Intel Xeon X5660 View product
Processor13 differ
Processor familyDiffers	Intel® Xeon® 3000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	X3440	X5660
Processor base frequencyDiffers	2.53 GHz	2.8 GHz
Processor coresDiffers	4	6
Processor socketDiffers	LGA 1156 (Socket H)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	8	12
System bus rateDiffers	2.5 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.93 GHz	3.2 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)	95 W	95 W
VID Voltage RangeDiffers	0.65 - 1.4 V	0.750 - 1.35 V
Stepping	B1	B1
Bus typeDiffers	DMI	QPI
Memory bandwidth supported by processor (max)Differs	21 GB/s	32 GB/s
FSB ParityKnown for one	Unknown — not stated by the source	No
Number of QPI linksKnown for one	Unknown — not stated by the source	2
Memory2 differ
Maximum internal memory supported by processorDiffers	32 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 channelsDiffers	Dual-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
On-board graphics card modelKnown for one	Not available	Unknown — not stated by the source
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Market segment	Server	Server
PCI Express slots versionKnown for one	2.0	Unknown — not stated by the source
PCI Express configurationsKnown for one	1x16, 2x8, 4x4	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	774 M	Unknown — not stated by the source
Processing Die sizeKnown for one	296 mm²	Unknown — not stated by the source
Supported instruction sets	SSE4.2	SSE4.2
CPU configuration (max)Differs	1	2
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® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Smart Cache	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® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	72.7 °C	81.3 °C
Weight & dimensionsidentical
Processor package sizeKnown for one	37.5 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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