Product comparison · 2 laptops

Acer eMachines E520-571G16 vs Lenovo ThinkPad R61 + ServicePack 3yr On-Site

103specifications compared
43differ
60identical
19known for one product only

Key differences

Display resolution
- eMachines E520-571G16:1280 x 800 pixels
- ThinkPad R61 + ServicePack 3yr On-Site:1680 x 1050 pixels
Processor family
- eMachines E520-571G16:Intel® Celeron® M
- ThinkPad R61 + ServicePack 3yr On-Site:Intel® Core™2 Duo
Processor model
- eMachines E520-571G16:575
- ThinkPad R61 + ServicePack 3yr On-Site:T8100
Processor cores
- eMachines E520-571G16:1
- ThinkPad R61 + ServicePack 3yr On-Site:2
Processor threads
- eMachines E520-571G16:1
- ThinkPad R61 + ServicePack 3yr On-Site:2
Processor frequency
- eMachines E520-571G16:2 GHz
- ThinkPad R61 + ServicePack 3yr On-Site:2.1 GHz
Processor cache
- eMachines E520-571G16:1 MB
- ThinkPad R61 + ServicePack 3yr On-Site:3 MB
Processor front side bus
- eMachines E520-571G16:667 MHz
- ThinkPad R61 + ServicePack 3yr On-Site:800 MHz

Side by side

Differences highlightedShow differences only

Comparison of eMachines E520-571G16, ThinkPad R61 + ServicePack 3yr On-Site
122 specifications	A Acer eMachines E520-571G16 View product	B Lenovo ThinkPad R61 + ServicePack 3yr On-Site View product
Display1 differ
Display diagonal	39.1 cm (15.4")	39.1 cm (15.4")
Display resolutionDiffers	1280 x 800 pixels	1680 x 1050 pixels
Native aspect ratio	16:10	16:10
Display brightnessKnown for one	200 cd/m²	Unknown — not stated by the source
Processor14 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron® M	Intel® Core™2 Duo
Processor modelDiffers	575	T8100
Processor coresDiffers	1	2
Processor threadsDiffers	1	2
Processor frequencyDiffers	2 GHz	2.1 GHz
Processor cacheDiffers	1 MB	3 MB
Processor cache type	L2	L2
Processor front side busDiffers	667 MHz	800 MHz
Processor socket	Socket 478	Socket 478
Processor lithographyDiffers	65 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Celeron Processor 500 Series for Mobile	Intel Core 2 Duo T8000 Series
Processor codenameDiffers	Merom	Penryn
Bus type	FSB	FSB
FSB Parity	No	No
Stepping	M0	M0
Thermal Design Power (TDP)Differs	31 W	35 W
TjunctionKnown for one	Unknown — not stated by the source	105 °C
Number of Processing Die TransistorsDiffers	291 M	410 M
Processing Die sizeDiffers	143 mm²	107 mm²
CPU multiplier (bus/core ratio)Differs	12	10.5
ECC supported by processor	No	No
TcaseKnown for one	100 °C	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	1 GB	2 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	4 GB	4 GB
Memory layout (slots x size)Known for one	1 x 1 GB	Unknown — not stated by the source
Storage1 differ
Total storage capacity	160 GB	160 GB
HDD interface	SATA	SATA
HDD speedKnown for one	Unknown — not stated by the source	5400 RPM
Optical drive typeKnown for one	Unknown — not stated by the source	DVD±RW
Card reader integratedDiffers	No	Yes
Graphics1 differ
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel® GMA 4500M	NVIDIA Quadro NVS 140M
Maximum graphics card memoryKnown for one	Unknown — not stated by the source	0.128 GB
Cameraidentical
Front camera	No	No
Network2 differ
Networking featuresDiffers	Ethernet/Fast Ethernet	Gigabit Ethernet
Wireless technologyDiffers	IEEE 802.11b/g	IEEE 802.11a/g/n
Bluetooth	No	No
Ports & interfaces9 differ
USB 2.0 ports quantityDiffers	2	3
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) portsDiffers	0	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	No	Yes
ExpressCard slotDiffers	No	Yes
CardBus PCMCIA slots quantityDiffers	0	1
CardBus PCMCIA slot typeDiffers	No	Type II
SmartCard slotDiffers	No	Yes
Modem (RJ-11) portsDiffers	0	1
TV-in port	No	No
TV-outDiffers	No	Yes
TV-out typeKnown for one	Unknown — not stated by the source	S-Video
PS/2 ports quantity	0	0
Parallel ports quantity	0	0
Serial ports quantity	0	0
USB 1.1 ports quantityKnown for one	Unknown — not stated by the source	0
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Software1 differ
Operating system installedDiffers	Linux	Windows XP Professional
Processor special features7 differ
Intel® Wireless Display (Intel® WiDi)	No	No
Embedded options availableDiffers	Yes	No
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable Bit	Yes	Yes
Idle StatesDiffers	No	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 StateDiffers	No	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)Differs	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Anti-Theft Technology (Intel® AT)	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® Hyper Threading Technology (Intel® HT Technology)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Turbo Boost Technology	No	No
Processor ARK IDDiffers	36680	33916
Processor codeDiffers	SLB6M	SLAVJ
Processor package size	35 x 35 mm	35 x 35 mm
Thermal Monitoring Technologies	No	No
Conflict-Free processor	No	No
Batteryidentical
Number of battery cells	6	6
Poweridentical
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions3 differ
WeightDiffers	2.8 kg	2.76 kg
WidthDiffers	364.6 mm	358 mm
DepthDiffers	273.6 mm	260 mm
HeightKnown for one	Unknown — not stated by the source	35 mm
Height (front)Known for one	2.7 cm	Unknown — not stated by the source
Height (rear)Known for one	3.84 cm	Unknown — not stated by the source
Other features1 differ
Infrared data port	No	No
Internal modemDiffers	No	Yes
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Supplied AC adapter type	AC	AC
Wake-on-LAN readyKnown for one	Yes	Unknown — not stated by the source
Audioidentical
Audio systemKnown for one	High Definition Audio	Unknown — not stated by the source
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Intel® GL40 Express	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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