Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 (4155-79G), IT vs Lenovo ThinkStation D20 + ThinkVision L2251p

86specifications compared
12differ
74identical
23known for one product only

Key differences

Processor model
- ThinkStation D20 (4155-79G), IT:E5507
- ThinkStation D20 + ThinkVision L2251p:E5506
Processor frequency
- ThinkStation D20 (4155-79G), IT:2.26 GHz
- ThinkStation D20 + ThinkVision L2251p:2.13 GHz
HDD capacity
- ThinkStation D20 (4155-79G), IT:500 GB
- ThinkStation D20 + ThinkVision L2251p:250 GB
HDD interface
- ThinkStation D20 (4155-79G), IT:SATA II
- ThinkStation D20 + ThinkVision L2251p:SATA
PS/2 ports quantity
- ThinkStation D20 (4155-79G), IT:0
- ThinkStation D20 + ThinkVision L2251p:2
Display included
- ThinkStation D20 (4155-79G), IT:No
- ThinkStation D20 + ThinkVision L2251p:Yes
Processor ARK ID
- ThinkStation D20 (4155-79G), IT:37100
- ThinkStation D20 + ThinkVision L2251p:37096
Processor code
- ThinkStation D20 (4155-79G), IT:SLBKC
- ThinkStation D20 + ThinkVision L2251p:SLBF8

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 (4155-79G), IT, ThinkStation D20 + ThinkVision L2251p
109 specifications	A Lenovo ThinkStation D20 (4155-79G), IT View product	B Lenovo ThinkStation D20 + ThinkVision L2251p View product
Processor2 differ
Processor modelDiffers	E5507	E5506
Processor frequencyDiffers	2.26 GHz	2.13 GHz
Processor system typeKnown for one	Unknown — not stated by the source	DP
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	16
Memoryidentical
Memory slotsKnown for one	Unknown — not stated by the source	12x DIMM
ECCKnown for one	Unknown — not stated by the source	Yes
Storage2 differ
Optical drive typeKnown for one	DVD-RW	Unknown — not stated by the source
HDD capacityDiffers	500 GB	250 GB
HDD interfaceDiffers	SATA II	SATA
Compatible memory cardsKnown for one	CF, MMC, SD, xD	Unknown — not stated by the source
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® 5520
Optical driveidentical
CD read speedKnown for one	40x	Unknown — not stated by the source
Ports & interfaces1 differ
Line-inKnown for one	Yes	Unknown — not stated by the source
PS/2 ports quantityDiffers	0	2
eSATA ports quantityKnown for one	1	Unknown — not stated by the source
Expansion slotsidentical
PCI Express x16 slotsKnown for one	1	Unknown — not stated by the source
PCI slotsKnown for one	2	Unknown — not stated by the source
Poweridentical
Power requirementsKnown for one	100-240V; 50/60Hz	Unknown — not stated by the source
Power supplyKnown for one	1060 W	Unknown — not stated by the source
Softwareidentical
Optional operating system suppliedKnown for one	Windows XP Professional	Unknown — not stated by the source
Compatible operating systemsKnown for one	Windows XP Pro SP1a/SP2a 32/64-bit Red Hat Enterprise Linux 5.0 Windows Vista 32/64-bit Windows Vista Enterprise 32/64-bit Windows Vista Ultimate 32/64-bit	Unknown — not stated by the source
Display1 differ
Display includedDiffers	No	Yes
Display diagonalKnown for one	Unknown — not stated by the source	55.9 cm (22")
ResolutionKnown for one	Unknown — not stated by the source	1680 x 1050 pixels
Processor special features2 differ
Processor ARK IDDiffers	37100	37096
Processor codeDiffers	SLBKC	SLBF8
CPU configuration (max)Known for one	Unknown — not stated by the source	2
Processor package sizeKnown for one	Unknown — not stated by the source	42.5 x 45 mm
Audio1 differ
Audio systemDiffers	ADI 1988 A	High Definition Audio
Weight & dimensions3 differ
DepthDiffers	579 mm	602 mm
HeightDiffers	485 mm	434 mm
WeightDiffers	24.9 kg	25 kg
Packaging contentidentical
Mouse includedKnown for one	Yes	Unknown — not stated by the source
Keyboardidentical
Keyboard typeKnown for one	Preferred Pro USB	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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