Product comparison · 2 cpus

Dell Xeon E5-2440 vs Dell Xeon E5-2643

48specifications compared
17differ
31identical
7known for one product only

Key differences

The Dell Xeon E5-2643 has 0.9 GHz more processor base frequency than the Dell Xeon E5-2440 (3.3 GHz vs 2.4 GHz). The Dell Xeon E5-2440 has 2 more processor cores than the Dell Xeon E5-2643 (6 vs 4). The Dell Xeon E5-2440 has 4 more processor threads than the Dell Xeon E5-2643 (12 vs 8). Processor model: E5-2440 on the Dell Xeon E5-2440, E5-2643 on the Dell Xeon E5-2643. Processor socket: LGA 1356 (Socket B2) on the Dell Xeon E5-2440, LGA 2011 (Socket R) on the Dell Xeon E5-2643.

Processor model
- Xeon E5-2440:E5-2440
- Xeon E5-2643:E5-2643
Processor base frequency
- Xeon E5-2440:2.4 GHz
- Xeon E5-2643:3.3 GHz
Processor cores
- Xeon E5-2440:6
- Xeon E5-2643:4
Processor socket
- Xeon E5-2440:LGA 1356 (Socket B2)
- Xeon E5-2643:LGA 2011 (Socket R)
Processor threads
- Xeon E5-2440:12
- Xeon E5-2643:8
System bus rate
- Xeon E5-2440:7.2 GT/s
- Xeon E5-2643:8 GT/s
Processor boost frequency
- Xeon E5-2440:2.9 GHz
- Xeon E5-2643:3.5 GHz
Processor cache
- Xeon E5-2440:15 MB
- Xeon E5-2643:10 MB

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5-2440, Xeon E5-2643
55 specifications	A Dell Xeon E5-2440 View product	B Dell Xeon E5-2643 View product
Processor13 differ
Processor family	Intel® Xeon® E5 Family	Intel® Xeon® E5 Family
Processor modelDiffers	E5-2440	E5-2643
Processor base frequencyDiffers	2.4 GHz	3.3 GHz
Processor coresDiffers	6	4
Processor socketDiffers	LGA 1356 (Socket B2)	LGA 2011 (Socket R)
Processor lithography	32 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	12	8
System bus rateDiffers	7.2 GT/s	8 GT/s
Processor operating modes	64-bit	64-bit
Processor boost frequencyDiffers	2.9 GHz	3.5 GHz
Processor cacheDiffers	15 MB	10 MB
Processor cache type	L3	L3
L3 cache speedKnown for one	2.4 GHz	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	95 W	130 W
VID Voltage RangeDiffers	0.6 - 1.35 V	0.60 - 1.35 V
Compatible chipsetsKnown for one	Intel® C602, Intel® C602J, Intel® C604, Intel® C606, Intel C608	Unknown — not stated by the source
SteppingDiffers	C2	M1
Bus type	QPI	QPI
Number of QPI linksDiffers	1	2
Memory bandwidth supported by processor (max)Differs	32 GB/s	51.2 GB/s
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	35
Memory2 differ
Maximum internal memory supported by processor	384 GB	384 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066,1333 MHz	1066,1333,1600 MHz
Memory channelsDiffers	Triple-channel	Quad-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	Yes	Yes
Market segment	Server	Server
Maximum number of PCI Express lanesDiffers	24	40
PCI Express slots version	3.0	3.0
Supported instruction sets	AVX	AVX
CPU configuration (max)	2	2
Embedded options available	No	No
ScalabilityKnown for one	S2S	Unknown — not stated by the source
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	32 nm
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel QuickPath Interconnect	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® vPro™ Platform Eligibility	Yes	Yes
Weight & dimensions1 differ
Processor package sizeDiffers	45 mm	52.5 mm
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, VT-x	VT-d, VT-x
CompatibilityKnown for one	DELL PowerEdge R420, DX6104 CSN, DX6104 SN	Unknown — not stated by the source
Operational conditionsidentical
TcaseKnown for one	Unknown — not stated by the source	73 °C

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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