Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 (4155-79G) vs Lenovo ThinkStation S20 (4105-E3G), Nordics

99specifications compared
30differ
69identical
10known for one product only

Key differences

The Lenovo ThinkStation S20 (4105-E3G), Nordics has 4 more processor threads than the Lenovo ThinkStation D20 (4155-79G) (8 vs 4). The Lenovo ThinkStation S20 (4105-E3G), Nordics has 0.54 GHz more processor frequency than the Lenovo ThinkStation D20 (4155-79G) (2.8 GHz vs 2.26 GHz). The Lenovo ThinkStation S20 (4105-E3G), Nordics has 4 MB more processor cache than the Lenovo ThinkStation D20 (4155-79G) (8 MB vs 4 MB). Only the Lenovo ThinkStation D20 (4155-79G) has Intel Virtualization Technology for Directed I/O (VT-d). Only the Lenovo ThinkStation S20 (4105-E3G), Nordics has Intel® Hyper Threading Technology (Intel® HT Technology).

Processor family
- ThinkStation D20 (4155-79G):Intel® Xeon® 5000 Sequence
- ThinkStation S20 (4105-E3G), Nordics:Intel® Xeon® 3000 Sequence
Processor model
- ThinkStation D20 (4155-79G):E5507
- ThinkStation S20 (4105-E3G), Nordics:W3530
Processor threads
- ThinkStation D20 (4155-79G):4
- ThinkStation S20 (4105-E3G), Nordics:8
Processor frequency
- ThinkStation D20 (4155-79G):2.26 GHz
- ThinkStation S20 (4105-E3G), Nordics:2.8 GHz
Processor cache
- ThinkStation D20 (4155-79G):4 MB
- ThinkStation S20 (4105-E3G), Nordics:8 MB
Processor series
- ThinkStation D20 (4155-79G):Intel Xeon 5500 Series
- ThinkStation S20 (4105-E3G), Nordics:Intel Xeon 3500 Series
Processor codename
- ThinkStation D20 (4155-79G):Nehalem EP
- ThinkStation S20 (4105-E3G), Nordics:Bloomfield
Thermal Design Power (TDP)
- ThinkStation D20 (4155-79G):80 W
- ThinkStation S20 (4105-E3G), Nordics:130 W

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 (4155-79G), ThinkStation S20 (4105-E3G), Nordics
109 specifications	A Lenovo ThinkStation D20 (4155-79G)View product	B Lenovo ThinkStation S20 (4105-E3G), Nordics View product
Processor13 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Xeon® 5000 Sequence	Intel® Xeon® 3000 Sequence
Processor modelDiffers	E5507	W3530
Processor cores	4	4
Processor threadsDiffers	4	8
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.06 GHz
Processor frequencyDiffers	2.26 GHz	2.8 GHz
Processor cacheDiffers	4 MB	8 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	QPI	QPI
FSB Parity	No	No
System bus rate	4.8 GT/s	4.8 GT/s
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Xeon 5500 Series	Intel Xeon 3500 Series
Processor codenameDiffers	Nehalem EP	Bloomfield
Thermal Design Power (TDP)Differs	80 W	130 W
TcaseDiffers	76 °C	67.9 °C
Number of QPI linksDiffers	2	1
Number of processors installedKnown for one	Unknown — not stated by the source	1
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	731 M
Processing Die sizeKnown for one	Unknown — not stated by the source	263 mm²
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	21
Processor core voltage (AC)Known for one	Unknown — not stated by the source	1.55 V
Stepping	D0	D0
Maximum internal memory supported by processorDiffers	144 GB	24 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800 MHz	800,1066 MHz
Memory bandwidth supported by processor (max)Differs	19.2 GB/s	25.6 GB/s
ECC supported by processor	Yes	Yes
Memory1 differ
Internal memory	3 GB	3 GB
Maximum internal memoryDiffers	96 GB	12 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)	3 x 1 GB	3 x 1 GB
Memory clock speed	1066 MHz	1066 MHz
Memory channels	Triple-channel	Triple-channel
Storage3 differ
Optical drive typeDiffers	DVD-RW	DVD-ROM
HDD capacityDiffers	500 GB	250 GB
HDD interfaceDiffers	SATA II	SATA
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Card reader integrated	Yes	Yes
Compatible memory cards	CF, MMC, SD, xD	CF, MMC, SD, xD
Performanceidentical
Product type	Workstation	Workstation
Optical driveidentical
CD read speed	40x	40x
Ports & interfaces1 differ
USB 2.0 ports quantity	10	10
Ethernet LAN (RJ-45) portsDiffers	2	1
Headphone outputs	1	1
Line-in	Yes	Yes
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	0	0
PS/2 ports quantity	0	0
Firewire (IEEE 1394) ports	2	2
eSATA ports quantity	1	1
Serial ports quantity	1	1
Parallel ports quantity	0	0
Expansion slotsidentical
PCI Express x16 slots	1	1
PCI slots	2	2
Power1 differ
Power requirements	100-240V; 50/60Hz	100-240V; 50/60Hz
Power supplyDiffers	1060 W	625 W
Designidentical
Chassis type	Tower	Tower
Software1 differ
Operating system installed	Windows 7 Professional	Windows 7 Professional
Optional operating system supplied	Windows XP Professional	Windows XP Professional
Compatible operating systemsDiffers	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	Windows XP Pro SP1/SP2 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
Displayidentical
Display included	No	No
Processor special features6 differ
CPU configuration (max)Known for one	Unknown — not stated by the source	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	Yes	Yes
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 Technology	No	No
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)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® Smart Cache	Yes	Yes
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)Differs	Yes	36 bit
Processor ARK IDDiffers	37100	41313
Processor codeDiffers	SLBKC	SLBKR
Processor package sizeKnown for one	Unknown — not stated by the source	42.5 x 45.0 mm
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Thermal Monitoring Technologies	No	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
Audioidentical
Audio system	ADI 1988 A	ADI 1988 A
Weight & dimensions4 differ
WidthDiffers	210 mm	175 mm
DepthDiffers	579 mm	460 mm
HeightDiffers	485 mm	478 mm
WeightDiffers	24.9 kg	16.3 kg
Packaging contentidentical
Mouse included	Yes	Yes
Keyboardidentical
Keyboard type	Preferred Pro USB	Preferred Pro USB

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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