Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A55 + 1GB vs Lenovo ThinkCentre M55e Small Desktop (9645-Q1G), FR

82specifications compared
11differ
71identical
12known for one product only

Key differences

Processor model
- ThinkCentre A55 + 1GB:E4500
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:E4300
Processor frequency
- ThinkCentre A55 + 1GB:2.2 GHz
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:1.8 GHz
Tcase
- ThinkCentre A55 + 1GB:73.3 °C
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:61.4 °C
CPU multiplier (bus/core ratio)
- ThinkCentre A55 + 1GB:11
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:9
Processor core voltage (AC)
- ThinkCentre A55 + 1GB:0.85 - 1.5 V
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:1.225 - 1.325 V
Total storage capacity
- ThinkCentre A55 + 1GB:160 GB
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:80 GB
Optical drive type
- ThinkCentre A55 + 1GB:DVD±RW
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:DVD-ROM
Chassis type
- ThinkCentre A55 + 1GB:SFF
- ThinkCentre M55e Small Desktop (9645-Q1G), FR:Small Desktop

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A55 + 1GB, ThinkCentre M55e Small Desktop (9645-Q1G), FR
94 specifications	A Lenovo ThinkCentre A55 + 1GB View product	B Lenovo ThinkCentre M55e Small Desktop (9645-Q1G), FR View product
Processor5 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™2 Duo	Intel® Core™2 Duo
Processor modelDiffers	E4500	E4300
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	2.2 GHz	1.8 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
Scenario Design Power (SDP)Known for one	Unknown — not stated by the source	12 W
TcaseDiffers	73.3 °C	61.4 °C
Number of processors installedKnown for one	Unknown — not stated by the source	1
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)Differs	11	9
Processor core voltage (AC)Differs	0.85 - 1.5 V	1.225 - 1.325 V
ECC supported by processor	No	No
SteppingKnown for one	M0	Unknown — not stated by the source
Memoryidentical
Internal memory	1 GB	1 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slotsKnown for one	2x DIMM	Unknown — not stated by the source
Storage2 differ
Total storage capacityDiffers	160 GB	80 GB
Optical drive typeDiffers	DVD±RW	DVD-ROM
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 & interfacesidentical
USB 2.0 ports quantity	8	8
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
PS/2 ports quantity	2	2
Serial ports quantity	1	1
Parallel ports quantity	1	1
Expansion slotsidentical
Expansion slotsKnown for one	Unknown — not stated by the source	1x PCI 1x PCI Express 1x PCI
Poweridentical
Power supply	225 W	225 W
Design1 differ
Chassis typeDiffers	SFF	Small Desktop
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	IBM
Softwareidentical
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareKnown for one	Unknown — not stated by the source	Yes
Displayidentical
Display included	No	No
Processor special features2 differ
Embedded options availableDiffers	No	Yes
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 IDDiffers	30781	28024
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
Processor codeKnown for one	SLA95	Unknown — not stated by the source
Audioidentical
Audio system	ADI 1986 A	ADI 1986 A
Weight & dimensions1 differ
Width	310 mm	310 mm
Depth	358 mm	358 mm
HeightDiffers	85 mm	87.5 mm
Weight	8.5 kg	8.5 kg
Packaging contentidentical
Mouse includedKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
Intel segment taggingKnown for one	Unknown — not stated by the source	Enterprise, Professional

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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