Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A55 + D221 vs Lenovo ThinkCentre A55 + L192

92specifications compared
12differ
80identical
2known for one product only

Key differences

Internal memory
- ThinkCentre A55 + D221:1 GB
- ThinkCentre A55 + L192:2 GB
USB 2.0 ports quantity
- ThinkCentre A55 + D221:8
- ThinkCentre A55 + L192:6
Power supply
- ThinkCentre A55 + D221:225 W
- ThinkCentre A55 + L192:280 W
Chassis type
- ThinkCentre A55 + D221:SFF
- ThinkCentre A55 + L192:Tower
Operating system installed
- ThinkCentre A55 + D221:Windows XP Professional
- ThinkCentre A55 + L192:Windows Vista Business
Display diagonal
- ThinkCentre A55 + D221:55.9 cm (22")
- ThinkCentre A55 + L192:48.3 cm (19")
Display resolution
- ThinkCentre A55 + D221:1680 x 1050 pixels
- ThinkCentre A55 + L192:1440 x 900 pixels
Contrast ratio (typical)
- ThinkCentre A55 + D221:700:1
- ThinkCentre A55 + L192:800:1

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A55 + D221, ThinkCentre A55 + L192
94 specifications	A Lenovo ThinkCentre A55 + D221 View product	B Lenovo ThinkCentre A55 + L192 View product
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™2 Duo	Intel® Core™2 Duo
Processor model	E4500	E4500
Processor cores	2	2
Processor threads	2	2
Processor frequency	2.2 GHz	2.2 GHz
Processor cache	2 MB	2 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithography	65 nm	65 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core 2 Duo E4000 Series	Intel Core 2 Duo E4000 Series
Processor codename	Conroe	Conroe
Thermal Design Power (TDP)	65 W	65 W
Tcase	73.3 °C	73.3 °C
Processor socket	LGA 775 (Socket T)	LGA 775 (Socket T)
Number of Processing Die Transistors	167 M	167 M
Processing Die size	111 mm²	111 mm²
CPU multiplier (bus/core ratio)	11	11
Processor core voltage (AC)	0.85 - 1.5 V	0.85 - 1.5 V
Stepping	M0	M0
ECC supported by processor	No	No
Memory1 differ
Internal memoryDiffers	1 GB	2 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slots	2x DIMM	2x DIMM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 1 GB
Storageidentical
Total storage capacity	160 GB	160 GB
Optical drive type	DVD±RW	DVD±RW
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Graphicsidentical
Discrete graphics card model	Intel® GMA 3000	Intel® GMA 3000
Performanceidentical
Product type	PC	PC
Networkidentical
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	8	6
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI portKnown for one	Yes	Unknown — not stated by the source
PS/2 ports quantity	2	2
Serial ports quantity	1	1
Parallel ports quantity	1	1
Power1 differ
Power supplyDiffers	225 W	280 W
Design1 differ
Chassis typeDiffers	SFF	Tower
Software1 differ
Operating system installedDiffers	Windows XP Professional	Windows Vista Business
Display3 differ
Display included	Yes	Yes
Display diagonalDiffers	55.9 cm (22")	48.3 cm (19")
Display resolutionDiffers	1680 x 1050 pixels	1440 x 900 pixels
Contrast ratio (typical)Differs	700:1	800:1
Display brightness	300 cd/m²	300 cd/m²
Viewing angle, horizontal	176°	176°
Viewing angle, vertical	176°	176°
Display	TFT	TFT
Processor special featuresidentical
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	No	No
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)	No	No
Intel Virtualization Technology (VT-x)	No	No
Intel Virtualization Technology for Directed I/O (VT-d)	No	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® Wireless Display (Intel® WiDi)	No	No
Processor ARK ID	30781	30781
Processor code	SLA95	SLA95
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Thermal Monitoring Technologies	Yes	Yes
Intel® Turbo Boost Technology	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	No	No
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 1986 A	ADI 1986 A
Weight & dimensions4 differ
WidthDiffers	310 mm	175 mm
DepthDiffers	358 mm	440 mm
HeightDiffers	85 mm	402 mm
WeightDiffers	8.5 kg	10.2 kg

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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