Product comparison · 2 pcs/workstations

Lenovo ThinkStation D20 vs Lenovo ThinkStation D20 (415518G), DE

105specifications compared
19differ
86identical
3known for one product only

Key differences

Processor model
- ThinkStation D20:X5550
- ThinkStation D20 (415518G), DE:E5520
Processor boost frequency
- ThinkStation D20:3.06 GHz
- ThinkStation D20 (415518G), DE:2.53 GHz
Processor frequency
- ThinkStation D20:2.66 GHz
- ThinkStation D20 (415518G), DE:2.26 GHz
System bus rate
- ThinkStation D20:6.4 GT/s
- ThinkStation D20 (415518G), DE:5.86 GT/s
Thermal Design Power (TDP)
- ThinkStation D20:95 W
- ThinkStation D20 (415518G), DE:80 W
Tcase
- ThinkStation D20:75 °C
- ThinkStation D20 (415518G), DE:72 °C
CPU multiplier (bus/core ratio)
- ThinkStation D20:20
- ThinkStation D20 (415518G), DE:17
Memory clock speeds supported by processor
- ThinkStation D20:800,1066,1333 MHz
- ThinkStation D20 (415518G), DE:800,1066 MHz

Side by side

Differences highlightedShow differences only

Comparison of ThinkStation D20, ThinkStation D20 (415518G), DE
108 specifications	A Lenovo ThinkStation D20 View product	B Lenovo ThinkStation D20 (415518G), DE View product
Processor9 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	X5550	E5520
Processor cores	4	4
Processor threads	8	8
Processor boost frequencyDiffers	3.06 GHz	2.53 GHz
Processor frequencyDiffers	2.66 GHz	2.26 GHz
Processor cache	8 MB	8 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	QPI	QPI
FSB Parity	No	No
System bus rateDiffers	6.4 GT/s	5.86 GT/s
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Xeon 5500 Series	Intel Xeon 5500 Series
Processor codename	Nehalem EP	Nehalem EP
Processor system type	DP	DP
Thermal Design Power (TDP)Differs	95 W	80 W
TcaseDiffers	75 °C	72 °C
Number of QPI links	2	2
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	20	17
Stepping	D0	D0
Maximum internal memory supported by processor	144 GB	144 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066,1333 MHz	800,1066 MHz
Memory bandwidth supported by processor (max)Differs	32 GB/s	25.6 GB/s
ECC supported by processor	Yes	Yes
Memory4 differ
Internal memoryDiffers	8 GB	4 GB
Maximum internal memoryDiffers	192 GB	96 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Differs	4 x 2 GB	2 x 2 GB
Memory clock speedDiffers	1333 MHz	1066 MHz
Memory channels	Triple-channel	Triple-channel
Storage1 differ
Optical drive type	DVD-RW	DVD-RW
HDD capacityDiffers	1.5 TB	150 GB
HDD interface	SATA	SATA
Card reader integrated	Yes	Yes
Compatible memory cards	CF, MMC, SD, xD	CF, MMC, SD, xD
Graphics1 differ
Graphics cardDiffers	Quadro FX 4800	Quadro FX 1800
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
I/O portsKnown for one	1 eSATA, 5 SATA Gen 2, 5 SAS	Unknown — not stated by the source
Expansion slotsidentical
PCI Express x16 slots	1	1
PCI slots	2	2
Power1 differ
Power requirementsDiffers	100-240V@50-60Hz	100-240V; 50/60Hz
Power supply	1060 W	1060 W
Designidentical
Chassis type	Tower	Tower
External drive baysKnown for one	3.5" x 1, 5.25" x 3	Unknown — not stated by the source
Internal drive baysKnown for one	3.5" x 5	Unknown — not stated by the source
Softwareidentical
Compatible operating systems	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 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
Displayidentical
Display included	No	No
Processor special features3 differ
CPU configuration (max)	2	2
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)	Yes	Yes
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	40 bit
Processor ARK IDDiffers	37106	40200
Processor codeDiffers	SLBF5	SLBFD
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
Audioidentical
Audio system	ADI 1988 A	ADI 1988 A
Weight & dimensionsidentical
Width	210 mm	210 mm
Depth	579 mm	579 mm
Height	485 mm	485 mm
Weight	24.9 kg	24.9 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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