Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A58 Tower (7515M9G) vs Lenovo ThinkStation E20

82specifications compared
40differ
42identical
46known for one product only

Key differences

Processor family
- ThinkCentre A58 Tower (7515M9G):Intel® Pentium®
- ThinkStation E20:Intel® Core™ i5
Processor model
- ThinkCentre A58 Tower (7515M9G):E5400
- ThinkStation E20:i5-650
Processor threads
- ThinkCentre A58 Tower (7515M9G):2
- ThinkStation E20:4
Processor frequency
- ThinkCentre A58 Tower (7515M9G):2.7 GHz
- ThinkStation E20:3.2 GHz
Processor cache
- ThinkCentre A58 Tower (7515M9G):2 MB
- ThinkStation E20:4 MB
Processor cache type
- ThinkCentre A58 Tower (7515M9G):L2
- ThinkStation E20:Smart Cache
Bus type
- ThinkCentre A58 Tower (7515M9G):FSB
- ThinkStation E20:DMI
Processor lithography
- ThinkCentre A58 Tower (7515M9G):45 nm
- ThinkStation E20:32 nm

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A58 Tower (7515M9G), ThinkStation E20
128 specifications	A Lenovo ThinkCentre A58 Tower (7515M9G)View product	B Lenovo ThinkStation E20 View product
Processor17 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Pentium®	Intel® Core™ i5
Processor modelDiffers	E5400	i5-650
Processor cores	2	2
Processor threadsDiffers	2	4
Processor frequencyDiffers	2.7 GHz	3.2 GHz
Processor cacheDiffers	2 MB	4 MB
Processor cache typeDiffers	L2	Smart Cache
Processor front side busKnown for one	800 MHz	Unknown — not stated by the source
Bus typeDiffers	FSB	DMI
FSB Parity	No	No
Processor lithographyDiffers	45 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Pentium E5000 Series for Desktop	Intel Core i5-600 Desktop Series
Processor codenameDiffers	Wolfdale	Clarkdale
Thermal Design Power (TDP)Differs	45, 65	73 W
TcaseDiffers	74.1 °C	72.6 °C
Number of processors installed	1	1
Processor socketDiffers	LGA 775 (Socket T)	LGA 1156 (Socket H)
Number of Processing Die TransistorsDiffers	228 M	382 M
Processing Die sizeDiffers	82 mm²	81 mm²
CPU multiplier (bus/core ratio)Differs	13.5	24
SteppingDiffers	R0	C2
ECC supported by processor	No	No
Processor generationKnown for one	Unknown — not stated by the source	Intel® Core™ i5
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.46 GHz
System bus rateKnown for one	Unknown — not stated by the source	2.5 GT/s
Maximum number of PCI Express lanesKnown for one	Unknown — not stated by the source	16
PCI Express configurationsKnown for one	Unknown — not stated by the source	1x16, 2x8
PCI Express slots versionKnown for one	Unknown — not stated by the source	2.0
Maximum internal memory supported by processorKnown for one	Unknown — not stated by the source	16 GB
Memory types supported by processorKnown for one	Unknown — not stated by the source	DDR3 1066/1333
Memory bandwidth supported by processor (max)Known for one	Unknown — not stated by the source	21 GB/s
Memory5 differ
Internal memoryDiffers	1 GB	4 GB
Maximum internal memoryDiffers	4 GB	16 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	1 x 1 GB	2 x 2 GB
Memory clock speedDiffers	800 MHz	1333 MHz
Memory channelsKnown for one	Unknown — not stated by the source	Dual-channel
Storageidentical
Total storage capacityKnown for one	250 GB	Unknown — not stated by the source
Optical drive typeKnown for one	DVD-ROM	Unknown — not stated by the source
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Card reader integrated	No	No
Floppy drive installedKnown for one	No	Unknown — not stated by the source
Number of HDDs installedKnown for one	Unknown — not stated by the source	1
HDD capacityKnown for one	Unknown — not stated by the source	500 GB
Graphicsidentical
On-board graphics card	Yes	Yes
Discrete graphics card modelKnown for one	Intel® GMA X4500	Unknown — not stated by the source
On-board graphics card familyKnown for one	Unknown — not stated by the source	Intel® HD Graphics
On-board graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics
Number of displays supported (on-board graphics)Known for one	Unknown — not stated by the source	2
On-board graphics card base frequencyKnown for one	Unknown — not stated by the source	733 MHz
Performance1 differ
Product typeDiffers	PC	Workstation
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® 3450
Networkidentical
Ethernet LANKnown for one	Yes	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
Wi-FiKnown for one	No	Unknown — not stated by the source
Networking featuresKnown for one	Gigabit Ethernet	Unknown — not stated by the source
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers	6	8
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Line-outKnown for one	Yes	Unknown — not stated by the source
Line-inKnown for one	Yes	Unknown — not stated by the source
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI portKnown for one	No	Unknown — not stated by the source
PS/2 ports quantity	2	2
Firewire (IEEE 1394) portsDiffers	0	2
Serial ports quantity	1	1
Parallel ports quantityKnown for one	1	Unknown — not stated by the source
eSATA ports quantityKnown for one	Unknown — not stated by the source	1
Expansion slotsidentical
PCI Express x16 slotsKnown for one	2	Unknown — not stated by the source
Poweridentical
Power supply	280 W	280 W
Power supply input voltageKnown for one	110 - 220 V	Unknown — not stated by the source
Power supply input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Power supply typeKnown for one	Unknown — not stated by the source	100 - 240 VAC, 50/60 Hz
Designidentical
Chassis type	Tower	Tower
Product colourKnown for one	Black	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Optional operating system suppliedKnown for one	Windows XP Professional	Unknown — not stated by the source
Displayidentical
Display included	No	No
Processor special features12 differ
CPU configuration (max)	1	1
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 Switching	No	No
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Differs	No	Yes
Intel Virtualization Technology (VT-x)Differs	2	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
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
Processor ARK IDDiffers	40478	43546
Processor codeKnown for one	SLGH7	Unknown — not stated by the source
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Thermal Monitoring TechnologiesDiffers	Yes	No
Intel® Turbo Boost TechnologyDiffers	No	1.0
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
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
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	45 nm
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	36 bit
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Audio1 differ
Audio systemDiffers	ALC662	Realtek ALC662
Weight & dimensions2 differ
Width	175 mm	175 mm
DepthDiffers	442 mm	430.8 mm
HeightDiffers	412 mm	425.2 mm
WeightKnown for one	11.2 kg	Unknown — not stated by the source
Packaging contentidentical
Mouse includedKnown for one	Yes	Unknown — not stated by the source
Remote control includedKnown for one	No	Unknown — not stated by the source
Other featuresidentical
TV tuner integratedKnown for one	No	Unknown — not stated by the source

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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