Product comparison · 2 laptops

Lenovo IdeaPad M6639GE laptop Intel® Celeron® T3500 vs Lenovo T420s + ThinkPad Mini Dock Series 3 (EU)

96specifications compared
59differ
37identical
65known for one product only

Key differences

Display diagonal
- IdeaPad M6639GE laptop Intel® Celeron® T3500:39.6 cm (15.6")
- T420s + ThinkPad Mini Dock Series 3 (EU):35.6 cm (14")
Display resolution
- IdeaPad M6639GE laptop Intel® Celeron® T3500:1366 x 768 pixels
- T420s + ThinkPad Mini Dock Series 3 (EU):1600 x 900 pixels
Processor family
- IdeaPad M6639GE laptop Intel® Celeron® T3500:Intel® Celeron®
- T420s + ThinkPad Mini Dock Series 3 (EU):Intel® Core™ i7
Processor model
- IdeaPad M6639GE laptop Intel® Celeron® T3500:T3500
- T420s + ThinkPad Mini Dock Series 3 (EU):i7-2620M
Processor threads
- IdeaPad M6639GE laptop Intel® Celeron® T3500:2
- T420s + ThinkPad Mini Dock Series 3 (EU):4
Processor frequency
- IdeaPad M6639GE laptop Intel® Celeron® T3500:2.1 GHz
- T420s + ThinkPad Mini Dock Series 3 (EU):2.7 GHz
Processor cache
- IdeaPad M6639GE laptop Intel® Celeron® T3500:1 MB
- T420s + ThinkPad Mini Dock Series 3 (EU):4 MB
Processor cache type
- IdeaPad M6639GE laptop Intel® Celeron® T3500:L2
- T420s + ThinkPad Mini Dock Series 3 (EU):Smart Cache

Side by side

Differences highlightedShow differences only

Comparison of M6639GE, T420s + ThinkPad Mini Dock Series 3 (EU)
161 specifications	A Lenovo IdeaPad M6639GE laptop Intel® Celeron® T3500 Model M6639GE View product	B Lenovo T420s + ThinkPad Mini Dock Series 3 (EU)View product
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	35.6 cm (14")
Display resolutionDiffers	1366 x 768 pixels	1600 x 900 pixels
HD typeKnown for one	Unknown — not stated by the source	HD+
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessKnown for one	Unknown — not stated by the source	250 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	300:1
Processor12 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i7
Processor generationKnown for one	Unknown — not stated by the source	2nd gen Intel® Core™ i7
Processor modelDiffers	T3500	i7-2620M
Processor cores	2	2
Processor threadsDiffers	2	4
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.4 GHz
Processor frequencyDiffers	2.1 GHz	2.7 GHz
System bus rateKnown for one	Unknown — not stated by the source	5 GT/s
Processor cacheDiffers	1 MB	4 MB
Processor cache typeDiffers	L2	Smart Cache
Processor socketDiffers	Socket 478	BGA 1023
Processor lithographyDiffers	45 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Celeron Processor T3000 Series for Mobile	Intel Core i7-2600 Mobile Series
Processor codenameDiffers	Penryn	Sandy Bridge
Bus typeDiffers	FSB	DMI
FSB Parity	No	No
SteppingDiffers	R0	J1
Thermal Design Power (TDP)	35 W	35 W
TjunctionKnown for one	Unknown — not stated by the source	100 °C
Maximum number of PCI Express lanesKnown for one	Unknown — not stated by the source	16
PCI Express configurationsKnown for one	Unknown — not stated by the source	1x16, 2x8, 1x8+2x4
PCI Express slots versionKnown for one	Unknown — not stated by the source	2.0
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	27
ECC supported by processor	No	No
Processor front side busKnown for one	800 MHz	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	410 M	Unknown — not stated by the source
Processing Die sizeKnown for one	107 mm²	Unknown — not stated by the source
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	8 GB	8 GB
Memory clock speedKnown for one	1066 MHz	Unknown — not stated by the source
Memory layout (slots x size)Known for one	2 x 2 GB	Unknown — not stated by the source
Storage3 differ
Total storage capacityDiffers	320 GB	160 GB
SSD capacityKnown for one	Unknown — not stated by the source	160 GB
SSD interfaceKnown for one	Unknown — not stated by the source	SATA
Optical drive typeDiffers	DVD Super Multi DL	DVD-RW
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD, xD	MMC, SD, SDHC, SDXC
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD capacityKnown for one	320 GB	Unknown — not stated by the source
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
Graphics2 differ
On-board graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel® GMA X4500	NVIDIA® NVS™ 4200M
Graphics card familyDiffers	Intel	NVIDIA
On-board graphics card familyKnown for one	Unknown — not stated by the source	Intel® HD Graphics
On-board graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics 3000
On-board graphics card base frequencyKnown for one	Unknown — not stated by the source	650 MHz
On-board graphics card dynamic frequency (max)Known for one	Unknown — not stated by the source	1300 MHz
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x116
Audio1 differ
Audio systemKnown for one	Unknown — not stated by the source	High Definition Audio
Number of built-in speakers	2	2
Speaker powerDiffers	1.5 W	1 W
Audio formats supportedKnown for one	AAC, MP3, WAV, WMA	Unknown — not stated by the source
Network1 differ
Mobile network connectionKnown for one	Unknown — not stated by the source	Yes
Mobile network generationKnown for one	Unknown — not stated by the source	3G
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ethernet LAN	Yes	Yes
BluetoothDiffers	No	Yes
Bluetooth versionKnown for one	Unknown — not stated by the source	3.0+HS
Integrated 4G WiMAXKnown for one	Unknown — not stated by the source	Yes
Wireless technologyKnown for one	Wi-Fi	Unknown — not stated by the source
Top Wi-Fi standardKnown for one	Wi-Fi 4 (802.11n)	Unknown — not stated by the source
Wi-Fi standardsKnown for one	802.11b, 802.11g, Wi-Fi 4 (802.11n)	Unknown — not stated by the source
Cabling technologyKnown for one	10/100Base-T(X)	Unknown — not stated by the source
Ports & interfaces5 differ
USB 2.0 ports quantityDiffers	3	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	1
Ethernet LAN (RJ-45) ports	1	1
DisplayPorts quantityDiffers	0	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	No	Yes
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slotDiffers	No	Yes
TV-out	No	No
eSATA/USB 2.0 ports quantityKnown for one	0	Unknown — not stated by the source
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	0	Unknown — not stated by the source
eSATA ports quantityKnown for one	0	Unknown — not stated by the source
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	0	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Performance1 differ
Motherboard chipsetDiffers	Intel® GM45 Express	Intel® QM67 Express
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Full-size keyboardKnown for one	Yes	Unknown — not stated by the source
Softwareidentical
Operating system installedKnown for one	Unknown — not stated by the source	Windows 7 Professional
Operating system architectureKnown for one	Unknown — not stated by the source	64-bit
Drivers includedKnown for one	Yes	Unknown — not stated by the source
Processor special features24 differ
Intel® Wireless Display (Intel® WiDi)Differs	No	Yes
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Embedded options available	No	No
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable BitDiffers	No	Yes
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	32 nm
Idle StatesKnown for one	Unknown — not stated by the source	Yes
Intel 64Differs	No	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel Enhanced Halt StateDiffers	No	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Identity Protection Technology versionKnown for one	Unknown — not stated by the source	1.00
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Differs	No	Yes
Intel Virtualization Technology (VT-x)Known for one	Unknown — not stated by the source	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Anti-Theft Technology (Intel® AT)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Identity Protection Technology (Intel® IPT)Known for one	Unknown — not stated by the source	Yes
Intel® InTru™ 3D TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® My WiFi Technology (Intel® MWT)Differs	No	Yes
Intel® Quick Sync Video TechnologyDiffers	No	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	42104	52231
Processor codeDiffers	SLGJV	SR041
Processor package sizeKnown for one	Unknown — not stated by the source	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX
Thermal Monitoring TechnologiesDiffers	No	Yes
Conflict-Free processor	No	No
Battery1 differ
Number of battery cells	6	6
Battery life (max)Differs	3.5 h	5.5 h
Poweridentical
DC-in jack	Yes	Yes
Security1 differ
Cable lock slotDiffers	No	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.6 kg	1.67 kg
WidthDiffers	376.8 mm	343 mm
DepthDiffers	249.8 mm	230.1 mm
Height (front)Differs	1.73 cm	2.12 cm
Height (rear)Differs	3.49 cm	2.6 cm
Other featuresidentical
Infrared data port	No	No
Intel segment taggingKnown for one	Unknown — not stated by the source	Home office, Small Business
Compliance industry standardsKnown for one	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	Unknown — not stated by the source
Power supply typeKnown for one	AC/DC	Unknown — not stated by the source
Supplied AC adapter typeKnown for one	AC	Unknown — not stated by the source
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Housing materialKnown for one	Plastic	Unknown — not stated by the source
Cameraidentical
Front camera resolution (numeric)Known for one	0.3 MP	Unknown — not stated by the source
Packaging contentidentical
AC adapter includedKnown for one	Yes	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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