Product comparison · 2 laptops

Lenovo L520 + Mini Dock vs Lenovo IdeaPad U400 Intel® Core™ i5 i5-2430M

140specifications compared
43differ
97identical
38known for one product only

Key differences

Product colour
- L520 + Mini Dock:Black
- IdeaPad U400 Intel® Core™ i5 i5-2430M:Grey, Silver
Display diagonal
- L520 + Mini Dock:39.6 cm (15.6")
- IdeaPad U400 Intel® Core™ i5 i5-2430M:35.6 cm (14")
Processor family
- L520 + Mini Dock:Intel® Core™ i3
- IdeaPad U400 Intel® Core™ i5 i5-2430M:Intel® Core™ i5
Processor generation
- L520 + Mini Dock:2nd gen Intel® Core™ i3
- IdeaPad U400 Intel® Core™ i5 i5-2430M:2nd gen Intel® Core™ i5
Processor model
- L520 + Mini Dock:i3-2350M
- IdeaPad U400 Intel® Core™ i5 i5-2430M:i5-2430M
Processor frequency
- L520 + Mini Dock:2.3 GHz
- IdeaPad U400 Intel® Core™ i5 i5-2430M:2.4 GHz
Tjunction
- L520 + Mini Dock:85 °C
- IdeaPad U400 Intel® Core™ i5 i5-2430M:100 °C
CPU multiplier (bus/core ratio)
- L520 + Mini Dock:23
- IdeaPad U400 Intel® Core™ i5 i5-2430M:24

Side by side

Differences highlightedShow differences only

Comparison of L520 + Mini Dock, U400
178 specifications	A Lenovo L520 + Mini Dock View product	B Lenovo IdeaPad U400 Intel® Core™ i5 i5-2430M Model U400 View product
Design1 differ
Product colourDiffers	Black	Grey, Silver
Form factorKnown for one	Clamshell	Unknown — not stated by the source
Display1 differ
Display diagonalDiffers	39.6 cm (15.6")	35.6 cm (14")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display surfaceKnown for one	Unknown — not stated by the source	Gloss
Display brightnessKnown for one	Unknown — not stated by the source	200 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	500:1
Processor7 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i3	2nd gen Intel® Core™ i5
Processor modelDiffers	i3-2350M	i5-2430M
Processor cores	2	2
Processor threads	4	4
Processor frequencyDiffers	2.3 GHz	2.4 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socket	Socket 988	Socket 988
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i3-2300 Mobile Series	Intel Core i5-2400 Mobile Series
Processor codename	Sandy Bridge	Sandy Bridge
Bus type	DMI	DMI
FSB Parity	No	No
Stepping	J1	J1
Thermal Design Power (TDP)	35 W	35 W
TjunctionDiffers	85 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16, 2x8, 1x8+2x4	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	23	24
ECC supported by processor	No	No
Processor boost frequencyKnown for one	Unknown — not stated by the source	3 GHz
Memory1 differ
Internal memoryDiffers	4 GB	8 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1333 MHz	1333 MHz
Memory slots	2x SO-DIMM	2x SO-DIMM
Memory slots (available)Known for one	1	Unknown — not stated by the source
Maximum internal memory	8 GB	8 GB
Storage6 differ
Total storage capacityDiffers	500 GB	750 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacityDiffers	500 GB	750 GB
HDD interfaceDiffers	SATA	SATA II
HDD speedDiffers	7200 RPM	5400 RPM
Optical drive typeDiffers	DVD-RW	DVD Super Multi DL
Card reader integratedDiffers	Yes	No
Compatible memory cardsKnown for one	MMC, SD, SDHC, SDXC	Unknown — not stated by the source
Graphics2 differ
On-board graphics card	Yes	Yes
Graphics card familyDiffers	Intel	AMD, Intel
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 3000	Intel® HD Graphics 3000
On-board graphics card base frequency	650 MHz	650 MHz
On-board graphics card dynamic frequency (max)Differs	1150 MHz	1200 MHz
On-board graphics card ID	0x116	0x116
Discrete graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card modelKnown for one	Unknown — not stated by the source	AMD Radeon HD 6470M
Number of discrete graphics cardsKnown for one	Unknown — not stated by the source	1
Audio2 differ
Audio systemDiffers	HDA	HD
Number of built-in speakers	2	2
Speaker powerDiffers	1.5 W	2 W
Built-in microphone	Yes	Yes
Network1 differ
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Wireless technologyKnown for one	Wi-Fi	Unknown — not stated by the source
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Ethernet LAN data ratesKnown for one	10,100,1000 Mbit/s	Unknown — not stated by the source
BluetoothDiffers	No	Yes
Integrated 4G WiMAX	Yes	Yes
Bluetooth versionKnown for one	Unknown — not stated by the source	3.0+HS
Cabling technologyKnown for one	Unknown — not stated by the source	10/100/1000Base-T(X)
LAN controllerKnown for one	Unknown — not stated by the source	Intel® 82579V
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	3	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
eSATA/USB 2.0 ports quantityDiffers	1	0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantity	0	0
eSATA ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantityDiffers	0	1
DisplayPorts quantityDiffers	1	0
DVI port	No	No
Firewire (IEEE 1394) ports	0	0
Thunderbolt ports quantity	0	0
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone inDiffers	Yes	No
Docking connector	No	No
ExpressCard slotDiffers	Yes	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
TV-out	No	No
VGA (D-Sub) ports quantityKnown for one	Unknown — not stated by the source	0
Modem (RJ-11) portsKnown for one	Unknown — not stated by the source	0
Performanceidentical
Motherboard chipset	Intel® HM65 Express	Intel® HM65 Express
Keyboard1 differ
Pointing deviceDiffers	ThinkPad UltraNav	Touchpad
Numeric keypad	No	No
Spill-resistant keyboardKnown for one	Yes	Unknown — not stated by the source
Full-size keyboard	Yes	Yes
Keyboard number of keysKnown for one	80	Unknown — not stated by the source
Windows keysKnown for one	Yes	Unknown — not stated by the source
Software1 differ
Operating system installedDiffers	Windows 7 Professional	Windows 7 Home Premium
Operating system architecture	64-bit	64-bit
Processor special features5 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithography	32 nm	32 nm
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	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology version	1.00	1.00
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)	No	No
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Anti-Theft Technology (Intel® AT)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™	Yes	Yes
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	53438	53450
Processor codeDiffers	SR0DN	SR04W
Processor package sizeDiffers	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Battery2 differ
Battery technologyDiffers	Lithium-Ion (Li-Ion)	Lithium Polymer (LiPo)
Number of battery cellsKnown for one	6	Unknown — not stated by the source
Battery capacityDiffers	2600 mAh	54 Wh
Battery life (max)Known for one	Unknown — not stated by the source	7 h
Poweridentical
AC adapter power	65 W	65 W
AC adapter frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
AC adapter input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
DC-in jack	Yes	Yes
Security2 differ
Cable lock slotDiffers	Yes	No
Fingerprint readerDiffers	Yes	No
Password protection typeKnown for one	HDD, Power on, Supervisor, User	Unknown — not stated by the source
Certificatesidentical
Wi-Fi certifiedKnown for one	Yes	Unknown — not stated by the source
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Weight & dimensions5 differ
WeightDiffers	2.6 kg	1.98 kg
WidthDiffers	380 mm	340 mm
DepthDiffers	247 mm	230 mm
Height (front)Known for one	3.2 cm	Unknown — not stated by the source
Height (rear)Known for one	3.6 cm	Unknown — not stated by the source
Width (imperial)Differs	38 cm (15")	34 cm (13.4")
Depth (imperial)Differs	24.7 cm (9.72")	23.1 cm (9.1")
Height (front) (imperial)Known for one	3.2 cm (1.26")	Unknown — not stated by the source
Height (rear) (imperial)Known for one	3.61 cm (1.42")	Unknown — not stated by the source
HeightKnown for one	Unknown — not stated by the source	22.6 mm
Height (imperial)Known for one	Unknown — not stated by the source	2.26 cm (0.89")
Packaging contentidentical
AC adapter included	Yes	Yes
Other featuresidentical
Infrared data port	No	No
Compliance industry standardsKnown for one	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	Unknown — not stated by the source
Power supply type	AC/DC	AC/DC
Intel segment taggingKnown for one	Home office, Small Business	Unknown — not stated by the source
Supplied AC adapter type	AC	AC
Internal modemKnown for one	Unknown — not stated by the source	No
Cameraidentical
Front camera resolution (numeric)Known for one	Unknown — not stated by the source	1.3 MP
Sustainabilityidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	EPEAT Gold, ENERGY STAR

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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