Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 (4155-79G), DE vs Lenovo ThinkStation S20 + ATI FirePro V3700

88specifications compared
34differ
54identical
29known for one product only

Key differences

The Lenovo ThinkStation S20 + ATI FirePro V3700 has 4 more processor threads than the Lenovo ThinkStation D20 (4155-79G), DE (8 vs 4). The Lenovo ThinkStation S20 + ATI FirePro V3700 has 0.54 GHz more processor frequency than the Lenovo ThinkStation D20 (4155-79G), DE (2.8 GHz vs 2.26 GHz). The Lenovo ThinkStation S20 + ATI FirePro V3700 has 4 MB more processor cache than the Lenovo ThinkStation D20 (4155-79G), DE (8 MB vs 4 MB). Only the Lenovo ThinkStation D20 (4155-79G), DE has Intel Virtualization Technology for Directed I/O (VT-d). Only the Lenovo ThinkStation S20 + ATI FirePro V3700 has Intel® Hyper Threading Technology (Intel® HT Technology).

Processor family
- ThinkStation D20 (4155-79G), DE:Intel® Xeon® 5000 Sequence
- ThinkStation S20 + ATI FirePro V3700:Intel® Xeon® 3000 Sequence
Processor model
- ThinkStation D20 (4155-79G), DE:E5507
- ThinkStation S20 + ATI FirePro V3700:W3530
Processor threads
- ThinkStation D20 (4155-79G), DE:4
- ThinkStation S20 + ATI FirePro V3700:8
Processor frequency
- ThinkStation D20 (4155-79G), DE:2.26 GHz
- ThinkStation S20 + ATI FirePro V3700:2.8 GHz
Processor cache
- ThinkStation D20 (4155-79G), DE:4 MB
- ThinkStation S20 + ATI FirePro V3700:8 MB
Processor series
- ThinkStation D20 (4155-79G), DE:Intel Xeon 5500 Series
- ThinkStation S20 + ATI FirePro V3700:Intel Xeon 3500 Series
Processor codename
- ThinkStation D20 (4155-79G), DE:Nehalem EP
- ThinkStation S20 + ATI FirePro V3700:Bloomfield
Thermal Design Power (TDP)
- ThinkStation D20 (4155-79G), DE:80 W
- ThinkStation S20 + ATI FirePro V3700:130 W

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20 (4155-79G), DE, ThinkStation S20 + ATI FirePro V3700
117 specifications	A Lenovo ThinkStation D20 (4155-79G), DE View product	B Lenovo ThinkStation S20 + ATI FirePro V3700 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
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
Memory3 differ
Internal memoryDiffers	3 GB	6 GB
Maximum internal memoryDiffers	96 GB	12 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	3 x 1 GB	3 x 2 GB
Memory clock speed	1066 MHz	1066 MHz
ECCKnown for one	Unknown — not stated by the source	Yes
Memory channels	Triple-channel	Triple-channel
Storage1 differ
Optical drive type	DVD-RW	DVD-RW
HDD capacity	500 GB	500 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 cardsKnown for one	CF, MMC, SD, xD	Unknown — not stated by the source
Graphics1 differ
Maximum graphics card memoryDiffers	0.5 GB	0.256 GB
Graphics cardKnown for one	Unknown — not stated by the source	FirePro V3700
Graphics card manufacturerKnown for one	Unknown — not stated by the source	ATI
Performanceidentical
Product type	Workstation	Workstation
Motherboard form factorKnown for one	Unknown — not stated by the source	ATX
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers	10	8
Ethernet LAN (RJ-45) portsDiffers	2	1
Headphone outputs	1	1
Microphone in	Yes	Yes
PS/2 ports quantityDiffers	0	2
Serial ports quantity	1	1
Parallel ports quantity	0	0
Line-inKnown for one	Yes	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	0	Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	2	Unknown — not stated by the source
eSATA ports quantityKnown for one	1	Unknown — not stated by the source
Expansion slots1 differ
PCI Express x1 slotsKnown for one	Unknown — not stated by the source	1
PCI Express x4 slotsKnown for one	Unknown — not stated by the source	1
PCI Express x16 slotsDiffers	1	2
PCI slotsKnown for one	2	Unknown — not stated by the source
Power2 differ
Power requirementsDiffers	100-240V; 50/60Hz	100-240V, 50/60Hz
Power supplyDiffers	1060 W	625 W
Designidentical
Chassis type	Tower	Tower
Product colourKnown for one	Unknown — not stated by the source	Black
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
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
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
Weight & dimensions4 differ
WidthDiffers	210 mm	175 mm
DepthDiffers	579 mm	483 mm
HeightDiffers	485 mm	426 mm
WeightDiffers	24.9 kg	15 kg
Other featuresidentical
Drive baysKnown for one	Unknown — not stated by the source	4x 3.5'', 2x 5.25''
Optical driveidentical
CD read speedKnown for one	40x	Unknown — not stated by the source
Audioidentical
Audio systemKnown for one	ADI 1988 A	Unknown — not stated by the source
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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