Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 + 24" Monitor vs Lenovo ThinkStation S20 + 22" Monitor

117specifications compared
40differ
77identical
17known for one product only

Key differences

The Lenovo ThinkStation S20 + 22" Monitor has 0.4 GHz more processor boost frequency than the Lenovo ThinkStation D20 + 24" Monitor (2.93 GHz vs 2.53 GHz). The Lenovo ThinkStation S20 + 22" Monitor has 0.4 GHz more processor frequency than the Lenovo ThinkStation D20 + 24" Monitor (2.66 GHz vs 2.26 GHz). The Lenovo ThinkStation D20 + 24" Monitor has 1.06 GT/s more system bus rate than the Lenovo ThinkStation S20 + 22" Monitor (5.86 GT/s vs 4.80 GT/s). Only the Lenovo ThinkStation D20 + 24" Monitor has Intel Virtualization Technology for Directed I/O (VT-d). Processor family: Intel® Xeon® 5000 Sequence on the Lenovo ThinkStation D20 + 24" Monitor, Intel® Xeon® 3000 Sequence on the Lenovo ThinkStation S20 + 22" Monitor.

Processor family
- ThinkStation D20 + 24" Monitor:Intel® Xeon® 5000 Sequence
- ThinkStation S20 + 22" Monitor:Intel® Xeon® 3000 Sequence
Processor model
- ThinkStation D20 + 24" Monitor:E5520
- ThinkStation S20 + 22" Monitor:W3520
Processor boost frequency
- ThinkStation D20 + 24" Monitor:2.53 GHz
- ThinkStation S20 + 22" Monitor:2.93 GHz
Processor frequency
- ThinkStation D20 + 24" Monitor:2.26 GHz
- ThinkStation S20 + 22" Monitor:2.66 GHz
System bus rate
- ThinkStation D20 + 24" Monitor:5.86 GT/s
- ThinkStation S20 + 22" Monitor:4.80 GT/s
Processor series
- ThinkStation D20 + 24" Monitor:Intel Xeon 5500 Series
- ThinkStation S20 + 22" Monitor:Intel Xeon 3500 Series
Processor codename
- ThinkStation D20 + 24" Monitor:Nehalem EP
- ThinkStation S20 + 22" Monitor:Bloomfield
Processor system type
- ThinkStation D20 + 24" Monitor:DP
- ThinkStation S20 + 22" Monitor:Up

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 + 24" Monitor, ThinkStation S20 + 22" Monitor
134 specifications	A Lenovo ThinkStation D20 + 24" Monitor View product	B Lenovo ThinkStation S20 + 22" Monitor View product
Processor13 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Xeon® 5000 Sequence	Intel® Xeon® 3000 Sequence
Processor modelDiffers	E5520	W3520
Processor cores	4	4
Processor threads	8	8
Processor boost frequencyDiffers	2.53 GHz	2.93 GHz
Processor frequencyDiffers	2.26 GHz	2.66 GHz
Processor cache	8 MB	8 MB
Processor cache type	Smart Cache	Smart Cache
Processor front side busKnown for one	Unknown — not stated by the source	1066 MHz
Bus type	QPI	QPI
FSB Parity	No	No
System bus rateDiffers	5.86 GT/s	4.80 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
Processor system typeDiffers	DP	Up
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 Transistors	731 M	731 M
Processing Die size	263 mm²	263 mm²
CPU multiplier (bus/core ratio)Differs	17	20
Maximum number of SMP processors	2	2
Processor core voltage (AC)Known for one	Unknown — not stated by the source	0.800 - 1.225 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 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
Memory2 differ
Internal memory	4 GB	4 GB
Maximum internal memoryDiffers	192 GB	12 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)	2 x 2 GB	2 x 2 GB
Memory slotsDiffers	12x DIMM	6x DIMM
Memory clock speed	1066 MHz	1066 MHz
ECC	Yes	Yes
Memory channels	Triple-channel	Triple-channel
Storage1 differ
Optical drive type	DVD-RW	DVD-RW
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
HDD interface	SATA, SATA II	SATA, SATA II
HDD speed	7200 RPM	7200 RPM
Card reader integrated	Yes	Yes
RAID support	Yes	Yes
RAID levelsDiffers	0, 1, 5, 10	0, 1, 5
Storage drive height	8.89 cm	8.89 cm
HDD number of platesKnown for one	3	Unknown — not stated by the source
Graphics1 differ
Maximum graphics card memoryKnown for one	Unknown — not stated by the source	0.256 GB
Graphics cardDiffers	Quadro FX 580	Quadro FX 380
Graphics card manufacturer	NVIDIA	NVIDIA
Performance1 differ
Product type	Workstation	Workstation
Motherboard chipsetDiffers	Intel® 5520	Intel® X58 Express
Networkidentical
Networking features	Gigabit Ethernet (10/100/1000)	Gigabit Ethernet (10/100/1000)
Networking topologyKnown for one	10,100,1000	Unknown — not stated by the source
Ports & interfaces3 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
Microphone in	Yes	Yes
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
Firewire (IEEE 1394) portsDiffers	2	0
eSATA ports quantity	1	1
Serial ports quantity	1	1
Parallel ports quantityKnown for one	Unknown — not stated by the source	0
I/O portsDiffers	5x SATA 5x SAS	5x SATA 1x Optical In 1x Optical Out
Line-inKnown for one	Yes	Unknown — not stated by the source
Expansion slotsidentical
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	1
PCI Express x4 slots	1	1
PCI Express x16 slots	2	2
PCI slotsKnown for one	2	Unknown — not stated by the source
Power3 differ
Power requirementsDiffers	100-127/200-240V, 50/60Hz; 12V/6A	100 - 127V/200 - 240V; 8/4
Power supplyDiffers	1060 W	625 W
Power supply input voltageDiffers	100 - 127, 200 - 240 V	100 - 240 V
Design2 differ
Chassis type	Tower	Tower
Product colour	Black	Black
External drive baysDiffers	1	2x 5.25", 1x 3.5"
Internal drive baysDiffers	5	3x 3.5"
Softwareidentical
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows XP x64 Linux 5 Red Hat Enterprise
Display1 differ
Display included	Yes	Yes
Display diagonalDiffers	61 cm (24")	55.9 cm (22")
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 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	40 bit	36 bit
Processor ARK IDDiffers	40200	39718
Processor codeDiffers	SLBFD	SLBEW
Processor package sizeDiffers	42.5 x 45 mm	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 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
Audio1 differ
Audio systemDiffers	HD	HD 7.1
Ergonomics1 differ
Acoustic pressure emissionsDiffers	5 dB	27 dB
Weight & dimensions4 differ
WidthDiffers	434 mm	426 mm
DepthDiffers	210 mm	175 mm
HeightDiffers	602 mm	483 mm
WeightDiffers	25 kg	15 kg
Certificates1 differ
CertificationDiffers	EnergyStar, EPEAT Gold, GREENGUARD, RoHS, 80+ Bronze	Energy Star, EPEAT Gold, Greedguard, ROHS
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
Packaging contentidentical
Mouse includedKnown for one	No	Unknown — not stated by the source
Other featuresidentical
Drive baysKnown for one	3.5", 5.25"	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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