Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 (415518G), HU vs Lenovo ThinkStation S20 (410565G), ES

73specifications compared
25differ
48identical
35known for one product only

Key differences

The Lenovo ThinkStation D20 (415518G), HU has 2 more processor cores than the Lenovo ThinkStation S20 (410565G), ES (4 vs 2). The Lenovo ThinkStation D20 (415518G), HU has 6 more processor threads than the Lenovo ThinkStation S20 (410565G), ES (8 vs 2). The Lenovo ThinkStation S20 (410565G), ES has 0.27 GHz more processor frequency than the Lenovo ThinkStation D20 (415518G), HU (2.53 GHz vs 2.26 GHz). Only the Lenovo ThinkStation D20 (415518G), HU has Intel® Hyper Threading Technology (Intel® HT Technology). Processor family: Intel® Xeon® 5000 Sequence on the Lenovo ThinkStation D20 (415518G), HU, Intel® Xeon® 3000 Sequence on the Lenovo ThinkStation S20 (410565G), ES.

Processor family
- ThinkStation D20 (415518G), HU:Intel® Xeon® 5000 Sequence
- ThinkStation S20 (410565G), ES:Intel® Xeon® 3000 Sequence
Processor model
- ThinkStation D20 (415518G), HU:E5520
- ThinkStation S20 (410565G), ES:W3505
Processor cores
- ThinkStation D20 (415518G), HU:4
- ThinkStation S20 (410565G), ES:2
Processor threads
- ThinkStation D20 (415518G), HU:8
- ThinkStation S20 (410565G), ES:2
Processor frequency
- ThinkStation D20 (415518G), HU:2.26 GHz
- ThinkStation S20 (410565G), ES:2.53 GHz
Processor cache
- ThinkStation D20 (415518G), HU:8 MB
- ThinkStation S20 (410565G), ES:4 MB
System bus rate
- ThinkStation D20 (415518G), HU:5.86 GT/s
- ThinkStation S20 (410565G), ES:4.8 GT/s
Processor codename
- ThinkStation D20 (415518G), HU:Nehalem EP
- ThinkStation S20 (410565G), ES:Bloomfield

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 (415518G), HU, ThinkStation S20 (410565G), ES
108 specifications	A Lenovo ThinkStation D20 (415518G), HU View product	B Lenovo ThinkStation S20 (410565G), ES View product
Processor11 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Xeon® 5000 Sequence	Intel® Xeon® 3000 Sequence
Processor modelDiffers	E5520	W3505
Processor coresDiffers	4	2
Processor threadsDiffers	8	2
Processor boost frequencyKnown for one	2.53 GHz	Unknown — not stated by the source
Processor frequencyDiffers	2.26 GHz	2.53 GHz
Processor cacheDiffers	8 MB	4 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	QPI	QPI
FSB ParityKnown for one	No	Unknown — not stated by the source
System bus rateDiffers	5.86 GT/s	4.8 GT/s
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesKnown for one	Intel Xeon 5500 Series	Unknown — not stated by the source
Processor codenameDiffers	Nehalem EP	Bloomfield
Processor system typeKnown for one	DP	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	80 W	130 W
TcaseKnown for one	72 °C	Unknown — not stated by the source
Number of QPI linksDiffers	2	1
Processor socketKnown for one	Socket B (LGA 1366)	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	731 M	Unknown — not stated by the source
Processing Die sizeKnown for one	263 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	17	Unknown — not stated by the source
SteppingKnown for one	D0	Unknown — not stated by the source
Maximum internal memory supported by processorDiffers	144 GB	24 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	800,1066 MHz	800,1066 MHz
Memory bandwidth supported by processor (max)	25.6 GB/s	25.6 GB/s
ECC supported by processor	Yes	Yes
Memory3 differ
Internal memoryDiffers	4 GB	3 GB
Maximum internal memoryDiffers	96 GB	12 GB
Internal memory typeKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory layout (slots x size)Differs	2 x 2 GB	3 x 1 GB
Memory clock speed	1066 MHz	1066 MHz
Memory channels	Triple-channel	Triple-channel
Storage1 differ
Optical drive type	DVD-RW	DVD-RW
HDD capacityDiffers	150 GB	250 GB
HDD interface	SATA	SATA
Card reader integrated	Yes	Yes
Compatible memory cards	CF, MMC, SD, xD	CF, MMC, SD, xD
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Graphicsidentical
Graphics cardKnown for one	Quadro FX 1800	Unknown — not stated by the source
Performanceidentical
Product type	Workstation	Workstation
Optical driveidentical
CD read speed	40x	40x
Ports & interfacesidentical
USB 2.0 ports quantity	10	10
Ethernet LAN (RJ-45) ports	2	2
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
Compatible operating systemsDiffers	Windows XP Pro SP1a/SP2a 32/64-bit Red Hat Enterprise Linux 5.0 Windows Vista Business Windows Vista Business 64 Windows Vista Enterprise Edition 32-bit Windows Vista Enterprise Edition 64-bit Windows Vista Ultimate Windows Vista Ultimate 64-Bit	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
Operating system installedKnown for one	Unknown — not stated by the source	Windows XP Professional
Displayidentical
Display included	No	No
Processor special features4 differ
CPU configuration (max)Known for one	2	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 TechnologyKnown for one	No	Unknown — not stated by the source
Intel Demand Based Switching	Yes	Yes
Intel Dual Display Capable TechnologyKnown for one	No	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	No	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
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)Known for one	Yes	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	No	Unknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	No	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® Smart CacheKnown for one	Yes	Unknown — not stated by the source
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
Physical Address Extension (PAE)Differs	40 bit	Yes
Processor ARK IDDiffers	40200	40800
Processor codeKnown for one	SLBFD	Unknown — not stated by the source
Processor package size	42.5 x 45 mm	42.5 x 45 mm
Thermal Monitoring Technologies	No	No
Intel® Turbo Boost TechnologyDiffers	1.0	No
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for one	No	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	No	Unknown — not stated by the source
Conflict-Free processorKnown for one	No	Unknown — not stated by the source
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
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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