Product comparison · 2 laptops

Lenovo L520 + Kit vs Lenovo X121e + warranty extension

97specifications compared
24differ
73identical
62known for one product only

Key differences

Display diagonal
- L520 + Kit:39.6 cm (15.6")
- X121e + warranty extension:29.5 cm (11.6")
Display resolution
- L520 + Kit:1600 x 900 pixels
- X121e + warranty extension:1366 x 768 pixels
Processor family
- L520 + Kit:Intel® Core™ i5
- X121e + warranty extension:Intel® Core™ i3
Processor generation
- L520 + Kit:2nd gen Intel® Core™ i5
- X121e + warranty extension:2nd gen Intel® Core™ i3
Processor model
- L520 + Kit:i5-2410M
- X121e + warranty extension:i3-2357M
Processor frequency
- L520 + Kit:2.3 GHz
- X121e + warranty extension:1.3 GHz
Processor cache type
- L520 + Kit:Smart Cache
- X121e + warranty extension:L3
Thermal Design Power (TDP)
- L520 + Kit:35 W
- X121e + warranty extension:17 W

Side by side

Differences highlightedShow differences only

Comparison of L520 + Kit, X121e + warranty extension
159 specifications	A Lenovo L520 + Kit View product	B Lenovo X121e + warranty extension View product
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Form factorKnown for one	Clamshell	Unknown — not stated by the source
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	29.5 cm (11.6")
Display resolutionDiffers	1600 x 900 pixels	1366 x 768 pixels
HD typeKnown for one	HD+	Unknown — not stated by the source
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
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	300:1
Processor8 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i3
Processor generationDiffers	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i3
Processor modelDiffers	i5-2410M	i3-2357M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyKnown for one	2.9 GHz	Unknown — not stated by the source
Processor frequencyDiffers	2.3 GHz	1.3 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache typeDiffers	Smart Cache	L3
Processor socketKnown for one	BGA 1023	Unknown — not stated by the source
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i5-2400 Mobile Series	Intel Core i3-2300 Mobile Series
Processor codename	Sandy Bridge	Sandy Bridge
Bus type	DMI	DMI
FSB ParityKnown for one	No	Unknown — not stated by the source
SteppingKnown for one	J1	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	35 W	17 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurationsDiffers	1x8, 1x16, 2x4, 2x8	1x16, 1x8+2x4, 2x8
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Known for one	23	Unknown — not stated by the source
ECC supported by processor	No	No
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speedKnown for one	1333 MHz	Unknown — not stated by the source
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
Storage1 differ
Total storage capacity	320 GB	320 GB
Storage mediaKnown for one	HDD	Unknown — not stated by the source
Number of HDDs installed	1	1
HDD capacityKnown for one	320 GB	Unknown — not stated by the source
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Optical drive typeDiffers	DVD Super Multi DL	No
Card reader integrated	Yes	Yes
Compatible memory cardsKnown for one	Unknown — not stated by the source	MMC, SD, SDHC, SDXC
Graphics2 differ
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
Graphics card family	Intel	Intel
On-board graphics card familyKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card model	Intel® HD Graphics 3000	Intel® HD Graphics 3000
On-board graphics card base frequencyDiffers	650 MHz	350 MHz
On-board graphics card dynamic frequency (max)Differs	1200 MHz	950 MHz
On-board graphics card IDKnown for one	0x116	Unknown — not stated by the source
Discrete graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics 3000
Audio1 differ
Audio systemDiffers	HD	High Definition Audio
Number of built-in speakers	2	2
Built-in microphone	Yes	Yes
Speaker powerKnown for one	Unknown — not stated by the source	2 W
Network2 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 standardsDiffers	802.11a, 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
Mobile network connectionKnown for one	Unknown — not stated by the source	Yes
Mobile network generationKnown for one	Unknown — not stated by the source	3G
Bluetooth versionKnown for one	Unknown — not stated by the source	3.0+HS
Ports & interfaces2 differ
USB 2.0 ports quantity	3	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
eSATA/USB 2.0 ports quantityKnown for one	1	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
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantityDiffers	0	1
DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
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
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
ExpressCard slotDiffers	Yes	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
TV-out	No	No
Docking connectorKnown for one	Unknown — not stated by the source	No
SmartCard slotKnown for one	Unknown — not stated by the source	Yes
Performanceidentical
Motherboard chipset	Intel® HM65 Express	Intel® HM65 Express
Keyboardidentical
Pointing device	ThinkPad UltraNav	ThinkPad UltraNav
Numeric keypadKnown for one	No	Unknown — not stated by the source
Windows keysKnown for one	Yes	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Processor special features3 differ
Intel® Wireless Display (Intel® WiDi)Known for one	Yes	Unknown — not stated by the source
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithographyKnown for one	32 nm	Unknown — not stated by the source
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
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)	No	No
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)Known for one	No	Unknown — not stated by the source
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™Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Smart CacheKnown for one	Yes	Unknown — not stated by the source
Intel® Turbo Boost TechnologyDiffers	2.0	No
Processor ARK IDKnown for one	52224	Unknown — not stated by the source
Processor package sizeDiffers	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)	31 x 24 mm
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processorDiffers	No	Yes
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Batteryidentical
Battery technologyKnown for one	Lithium-Ion (Li-Ion)	Unknown — not stated by the source
Number of battery cells	6	6
Battery life (max)Known for one	Unknown — not stated by the source	9.3 h
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	Yes	Yes
Fingerprint readerKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	Unknown — not stated by the source	IBM
Sustainabilityidentical
Sustainability certificatesKnown for one	EPEAT Gold, ENERGY STAR	Unknown — not stated by the source
Weight & dimensions3 differ
WeightDiffers	2.6 kg	1.55 kg
WidthDiffers	379.9 mm	289.6 mm
DepthDiffers	246.8 mm	208 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
HeightKnown for one	Unknown — not stated by the source	23.5 mm
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source
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
Intel segment taggingKnown for one	Home office, Small Business	Unknown — not stated by the source
Supplied AC adapter typeKnown for one	AC	Unknown — not stated by the source
Cameraidentical
Front camera resolution (numeric)Known for one	Unknown — not stated by the source	0.3 MP

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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