Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 + 24" Monitor vs Lenovo ThinkStation S20, BE

101specifications compared
43differ
58identical
33known for one product only

Key differences

The Lenovo ThinkStation S20, BE has 2 more processor cores than the Lenovo ThinkStation D20 + 24" Monitor (6 vs 4). The Lenovo ThinkStation S20, BE has 4 more processor threads than the Lenovo ThinkStation D20 + 24" Monitor (12 vs 8). The Lenovo ThinkStation S20, BE has 1.07 GHz more processor boost frequency than the Lenovo ThinkStation D20 + 24" Monitor (3.6 GHz vs 2.53 GHz). Only the Lenovo ThinkStation D20 + 24" Monitor has display included. Only the Lenovo ThinkStation S20, BE has Intel Trusted Execution Technology.

Processor family
- ThinkStation D20 + 24" Monitor:Intel® Xeon® 5000 Sequence
- ThinkStation S20, BE:Intel® Xeon® 3000 Sequence
Processor model
- ThinkStation D20 + 24" Monitor:E5520
- ThinkStation S20, BE:W3680
Processor cores
- ThinkStation D20 + 24" Monitor:4
- ThinkStation S20, BE:6
Processor threads
- ThinkStation D20 + 24" Monitor:8
- ThinkStation S20, BE:12
Processor boost frequency
- ThinkStation D20 + 24" Monitor:2.53 GHz
- ThinkStation S20, BE:3.6 GHz
Processor frequency
- ThinkStation D20 + 24" Monitor:2.26 GHz
- ThinkStation S20, BE:3.33 GHz
Processor cache
- ThinkStation D20 + 24" Monitor:8 MB
- ThinkStation S20, BE:12 MB
System bus rate
- ThinkStation D20 + 24" Monitor:5.86 GT/s
- ThinkStation S20, BE:6.4 GT/s

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 + 24" Monitor, ThinkStation S20, BE
134 specifications	A Lenovo ThinkStation D20 + 24" Monitor View product	B Lenovo ThinkStation S20, BE View product
Processor19 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Xeon® 5000 Sequence	Intel® Xeon® 3000 Sequence
Processor modelDiffers	E5520	W3680
Processor coresDiffers	4	6
Processor threadsDiffers	8	12
Processor boost frequencyDiffers	2.53 GHz	3.6 GHz
Processor frequencyDiffers	2.26 GHz	3.33 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	QPI	QPI
FSB Parity	No	No
System bus rateDiffers	5.86 GT/s	6.4 GT/s
Processor lithographyDiffers	45 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Xeon 5500 Series	Intel Xeon 3600 Series
Processor codenameDiffers	Nehalem EP	Westmere EP
Processor system typeKnown for one	DP	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	80 W	130 W
TcaseDiffers	72 °C	67.9 °C
Number of QPI linksDiffers	2	1
Number of processors installed	1	1
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
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)Differs	17	25
Maximum number of SMP processors	2	2
SteppingDiffers	D0	B1
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	800,1066 MHz	800,1066,1333 MHz
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	32 GB/s
ECC supported by processor	Yes	Yes
Memory4 differ
Internal memoryDiffers	4 GB	6 GB
Maximum internal memoryDiffers	192 GB	12 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	2 x 2 GB	3 x 2 GB
Memory slotsKnown for one	12x DIMM	Unknown — not stated by the source
Memory clock speedDiffers	1066 MHz	1333 MHz
ECC	Yes	Yes
Memory channels	Triple-channel	Triple-channel
Storage3 differ
Optical drive typeDiffers	DVD-RW	DVD-ROM
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
HDD interfaceDiffers	SATA, SATA II	SATA
HDD speed	7200 RPM	7200 RPM
Card reader integrated	Yes	Yes
RAID support	Yes	Yes
RAID levelsDiffers	0, 1, 5, 10	0, 1, 5
HDD number of platesKnown for one	3	Unknown — not stated by the source
Storage drive heightKnown for one	8.89 cm	Unknown — not stated by the source
Graphicsidentical
Graphics cardKnown for one	Quadro FX 580	Unknown — not stated by the source
Graphics card manufacturerKnown for one	NVIDIA	Unknown — not stated by the source
Performance1 differ
Product type	Workstation	Workstation
Motherboard chipsetDiffers	Intel® 5520	Intel® X58 Express
Networkidentical
Networking topologyKnown for one	10,100,1000	Unknown — not stated by the source
Networking features	Gigabit Ethernet (10/100/1000)	Gigabit Ethernet (10/100/1000)
Ports & interfaces1 differ
USB 2.0 ports quantity	10	10
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
Ethernet LAN (RJ-45) portsDiffers	2	1
Headphone outputs	6	6
Line-inKnown for one	Yes	Unknown — not stated by the source
Microphone in	Yes	Yes
Firewire (IEEE 1394) portsKnown for one	2	Unknown — not stated by the source
eSATA ports quantity	1	1
Serial ports quantity	1	1
I/O portsKnown for one	5x SATA 5x SAS	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	Unknown — not stated by the source	0
PS/2 ports quantityKnown for one	Unknown — not stated by the source	0
Parallel ports quantityKnown for one	Unknown — not stated by the source	0
Expansion slotsidentical
PCI Express x4 slots	1	1
PCI Express x16 slots	2	2
PCI slotsKnown for one	2	Unknown — not stated by the source
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	1
Power2 differ
Power requirementsDiffers	100-127/200-240V, 50/60Hz; 12V/6A	100 - 240V
Power supplyDiffers	1060 W	625 W
Power supply input voltageKnown for one	100 - 127, 200 - 240 V	Unknown — not stated by the source
Design2 differ
Chassis type	Tower	Tower
Product colour	Black	Black
External drive baysDiffers	1	1 x 3.5", 2 x 5.25"
Internal drive baysDiffers	5	3 x 3.5"
Rack mountingKnown for one	Unknown — not stated by the source	Yes
Display1 differ
Display includedDiffers	Yes	No
Display diagonalKnown for one	61 cm (24")	Unknown — not stated by the source
Processor special features6 differ
CPU configuration (max)Differs	2	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 TechnologyDiffers	No	Yes
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)Differs	No	Yes
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 CacheKnown for one	Yes	Unknown — not stated by the source
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)Differs	40 bit	36 bit
Processor ARK IDDiffers	40200	47917
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 Technology	1.0	1.0
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	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
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Audioidentical
Audio systemKnown for one	HD	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	10 - 35 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	10 - 80%	Unknown — not stated by the source
Ergonomicsidentical
Acoustic pressure emissionsKnown for one	5 dB	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	434 mm	426 mm
DepthDiffers	210 mm	175 mm
HeightDiffers	602 mm	483 mm
WeightDiffers	25 kg	15 kg
Packaging contentidentical
Mouse includedKnown for one	No	Unknown — not stated by the source
Certificatesidentical
CertificationKnown for one	EnergyStar, EPEAT Gold, GREENGUARD, RoHS, 80+ Bronze	Unknown — not stated by the source
Other featuresidentical
Drive baysKnown for one	3.5", 5.25"	Unknown — not stated by the source
Softwareidentical
Operating system installedKnown for one	Unknown — not stated by the source	Windows 7 Professional
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows XP x64 Linux 5
Drivers includedKnown for one	Unknown — not stated by the source	Yes

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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