Product comparison · 2 pcs/workstations

Lenovo E20 + 23" vs Lenovo ThinkCentre A70z

78specifications compared
37differ
41identical
44known for one product only

Key differences

The Lenovo E20 + 23" has 2 more processor cores than the Lenovo ThinkCentre A70z (4 vs 2). The Lenovo E20 + 23" has 6 more processor threads than the Lenovo ThinkCentre A70z (8 vs 2). The Lenovo ThinkCentre A70z has 0.53 GHz more processor frequency than the Lenovo E20 + 23" (3.06 GHz vs 2.53 GHz). Only the Lenovo E20 + 23" has ECC supported by processor. Only the Lenovo E20 + 23" has Intel Demand Based Switching.

Processor family
- E20 + 23":Intel® Xeon® 3000 Sequence
- ThinkCentre A70z:Intel® Core™2 Duo
Processor model
- E20 + 23":X3440
- ThinkCentre A70z:E7600
Processor cores
- E20 + 23":4
- ThinkCentre A70z:2
Processor threads
- E20 + 23":8
- ThinkCentre A70z:2
Processor frequency
- E20 + 23":2.53 GHz
- ThinkCentre A70z:3.06 GHz
Processor cache
- E20 + 23":8 MB
- ThinkCentre A70z:3 MB
Processor cache type
- E20 + 23":Smart Cache
- ThinkCentre A70z:L2
Bus type
- E20 + 23":DMI
- ThinkCentre A70z:FSB

Side by side

Differences highlightedShow differences only

Comparison of E20 + 23", ThinkCentre A70z
122 specifications	A Lenovo E20 + 23"View product	B Lenovo ThinkCentre A70z View product
Processor18 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Xeon® 3000 Sequence	Intel® Core™2 Duo
Processor modelDiffers	X3440	E7600
Processor coresDiffers	4	2
Processor threadsDiffers	8	2
Processor boost frequencyKnown for one	2.93 GHz	Unknown — not stated by the source
Processor frequencyDiffers	2.53 GHz	3.06 GHz
Processor cacheDiffers	8 MB	3 MB
Processor cache typeDiffers	Smart Cache	L2
Bus typeDiffers	DMI	FSB
FSB Parity	No	No
System bus rateKnown for one	2.5 GT/s	Unknown — not stated by the source
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Xeon 3400 Series	Intel Core 2 Duo E7000 Series
Processor codenameDiffers	Lynnfield	Wolfdale
Processor system typeKnown for one	Up	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	95 W	65 W
TcaseDiffers	72.7 °C	74.1 °C
Maximum number of PCI Express lanesKnown for one	16	Unknown — not stated by the source
PCI Express configurationsKnown for one	1x16, 2x8, 4x4	Unknown — not stated by the source
PCI Express slots versionKnown for one	2.0	Unknown — not stated by the source
Number of processors installedKnown for one	1	Unknown — not stated by the source
Processor socketDiffers	LGA 1156 (Socket H)	LGA 775 (Socket T)
Number of Processing Die TransistorsDiffers	774 M	228 M
Processing Die sizeDiffers	296 mm²	82 mm²
CPU multiplier (bus/core ratio)Differs	19	11.5
SteppingDiffers	B1	R0
Maximum internal memory supported by processorKnown for one	32 GB	Unknown — not stated by the source
Memory types supported by processorKnown for one	DDR3 800/1066/1333	Unknown — not stated by the source
Memory bandwidth supported by processor (max)Known for one	21 GB/s	Unknown — not stated by the source
ECC supported by processorDiffers	Yes	No
Processor front side busKnown for one	Unknown — not stated by the source	1066 MHz
Memory1 differ
Internal memory	4 GB	4 GB
Maximum internal memoryDiffers	16 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)	2 x 2 GB	2 x 2 GB
Memory clock speedKnown for one	1333 MHz	Unknown — not stated by the source
Memory channelsKnown for one	Dual-channel	Unknown — not stated by the source
Memory slotsKnown for one	Unknown — not stated by the source	2x DIMM
Storageidentical
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD capacityKnown for one	500 GB	Unknown — not stated by the source
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Card reader integrated	No	No
Total storage capacityKnown for one	Unknown — not stated by the source	320 GB
Optical drive typeKnown for one	Unknown — not stated by the source	DVD-RW
Floppy drive installedKnown for one	Unknown — not stated by the source	No
Performance1 differ
Product typeDiffers	Workstation	PC
Motherboard chipsetKnown for one	Intel® 3450	Unknown — not stated by the source
Network1 differ
Networking featuresDiffers	Gigabit Ethernet (10/100/1000)	Gigabit Ethernet
Ethernet LANKnown for one	Unknown — not stated by the source	Yes
Wi-FiKnown for one	Unknown — not stated by the source	Yes
Wireless technologyKnown for one	Unknown — not stated by the source	IEEE 802.11b/g/n
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	10	6
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
PS/2 ports quantity	2	2
Firewire (IEEE 1394) portsKnown for one	2	Unknown — not stated by the source
eSATA ports quantityKnown for one	1	Unknown — not stated by the source
Serial ports quantityKnown for one	1	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	Unknown — not stated by the source	1
DVI portKnown for one	Unknown — not stated by the source	No
Power1 differ
Power supply typeKnown for one	100 - 240 VAC, 50/60 Hz	Unknown — not stated by the source
Power supplyDiffers	280 W	130 W
Designidentical
Chassis type	Tower	Tower
Product colourKnown for one	Unknown — not stated by the source	Black
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architectureKnown for one	64-bit	Unknown — not stated by the source
Display1 differ
Display included	Yes	Yes
Display diagonalDiffers	58.4 cm (23")	48.3 cm (19")
Display resolutionKnown for one	Unknown — not stated by the source	1440 x 900 pixels
Contrast ratio (typical)Known for one	Unknown — not stated by the source	1000:1
Display brightnessKnown for one	Unknown — not stated by the source	300 cd/m²
Processor special features8 differ
CPU configuration (max)Known for one	1	Unknown — not stated by the source
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based SwitchingDiffers	Yes	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel VT-x with Extended Page Tables (EPT)Differs	Yes	No
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	Yes	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)Known for one	36 bit	Unknown — not stated by the source
Processor ARK IDDiffers	42928	41495
Processor codeKnown for one	SLBLF	Unknown — not stated by the source
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Supported instruction setsKnown for one	SSE4.2	Unknown — not stated by the source
Thermal Monitoring TechnologiesDiffers	No	Yes
Intel® Turbo Boost TechnologyDiffers	1.0	No
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Audio1 differ
Audio systemDiffers	Realtek ALC662	CX20582-11Z
Weight & dimensions4 differ
WidthDiffers	175 mm	472 mm
DepthDiffers	430.8 mm	73 mm
HeightDiffers	425.2 mm	356.1 mm
WeightDiffers	11.2 kg	8 kg
Graphicsidentical
On-board graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card modelKnown for one	Unknown — not stated by the source	Intel® GMA X4500
Graphics card familyKnown for one	Unknown — not stated by the source	Intel
Packaging contentidentical
Remote control includedKnown for one	Unknown — not stated by the source	No
Multimediaidentical
Built-in cameraKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
TV tuner integratedKnown 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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