Product comparison · 2 laptops

Dell 14 (3420) vs Dell 15z (L511z)

150specifications compared
54differ
96identical
29known for one product only

Key differences

Product colour
- 14 (3420):Black
- 15z (L511z):Silver
Display diagonal
- 14 (3420):35.6 cm (14")
- 15z (L511z):39.6 cm (15.6")
Display resolution
- 14 (3420):1366 x 768 pixels
- 15z (L511z):1920 x 1080 pixels
HD type
- 14 (3420):HD
- 15z (L511z):Full HD
Processor family
- 14 (3420):Intel® Core™ i3
- 15z (L511z):Intel® Core™ i5
Processor generation
- 14 (3420):3rd gen Intel® Core™ i3
- 15z (L511z):2nd gen Intel® Core™ i5
Processor model
- 14 (3420):i3-3110M
- 15z (L511z):i5-2450M
Processor frequency
- 14 (3420):2.4 GHz
- 15z (L511z):2.5 GHz

Side by side

Differences highlightedShow differences only

Comparison of 14 (3420), 15z (L511z)
179 specifications	A Dell 14 (3420)View product	B Dell 15z (L511z)View product
Design1 differ
Product colourDiffers	Black	Silver
Form factor	Clamshell	Clamshell
Housing materialKnown for one	Unknown — not stated by the source	Aluminium
Display3 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolutionDiffers	1366 x 768 pixels	1920 x 1080 pixels
HD typeDiffers	HD	Full HD
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Contrast ratio (typical)Known for one	Unknown — not stated by the source	300:1
Display diagonal (metric)Known for one	35.6 cm	Unknown — not stated by the source
Processor10 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	3rd gen Intel® Core™ i3	2nd gen Intel® Core™ i5
Processor modelDiffers	i3-3110M	i5-2450M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.1 GHz
Processor frequencyDiffers	2.4 GHz	2.5 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor lithographyDiffers	22 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i3-3100 Mobile Series	Intel Core i5-2400 Mobile Series
Processor codenameDiffers	Ivy Bridge	Sandy Bridge
Bus type	DMI	DMI
FSB Parity	No	No
SteppingDiffers	L1	J1
Thermal Design Power (TDP)	35 W	35 W
TjunctionDiffers	90 °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	24	25
ECC supported by processor	No	No
Processor socketKnown for one	BGA 1023	Unknown — not stated by the source
Memory4 differ
Internal memoryDiffers	4 GB	8 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speedDiffers	1600 MHz	1333 MHz
Memory layout (slots x size)Differs	1 x 4 GB	2 x 4 GB
Memory slotsDiffers	1x SO-DIMM	2x SO-DIMM
Memory slots (available)	0	0
Maximum internal memoryKnown for one	Unknown — not stated by the source	8 GB
Storage1 differ
Total storage capacity	750 GB	750 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacity	750 GB	750 GB
HDD interface	SATA	SATA
Optical drive type	DVD Super Multi	DVD Super Multi
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, SD	Memory Stick (MS), MMC, MS PRO, MSXC, SD, SDHC, SDIO, SDXC, xD
Graphics6 differ
On-board graphics card	Yes	Yes
Discrete graphics cardDiffers	No	Yes
Discrete graphics card modelDiffers	Not available	NVIDIA® GeForce® GT 525M
Discrete graphics card memoryKnown for one	Unknown — not stated by the source	2 GB
Graphics card familyDiffers	Intel	Intel, NVIDIA
Discrete graphics memory typeKnown for one	Unknown — not stated by the source	GDDR3
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics 4000	Intel® HD Graphics 3000
On-board graphics card base frequency	650 MHz	650 MHz
On-board graphics card dynamic frequency (max)Differs	1000 MHz	1300 MHz
On-board graphics card IDDiffers	0x166	0x116
Number of discrete graphics cardsKnown for one	Unknown — not stated by the source	1
Audio1 differ
Audio systemDiffers	MaxxAudio	MaxxAudio 3
Built-in speaker(s)	Yes	Yes
Built-in microphone	Yes	Yes
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Speaker powerKnown for one	2 W	Unknown — not stated by the source
Camera1 differ
Front camera resolution (numeric)Differs	1 MP	1.3 MP
Network4 differ
Wi-Fi	Yes	Yes
Networking featuresDiffers	Fast Ethernet, WLAN	Gigabit Ethernet, WLAN
Wi-Fi standardsDiffers	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11a, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Ethernet LAN data ratesDiffers	10,100 Mbit/s	10,100,1000 Mbit/s
Bluetooth	Yes	Yes
Cabling technologyDiffers	10/100Base-T(X)	10/100/1000Base-T(X)
Integrated 4G WiMAX	Yes	Yes
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers	3	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	2
eSATA/USB 2.0 ports quantityDiffers	0	1
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 quantity	1	1
HDMI versionKnown for one	Unknown — not stated by the source	1.4
DisplayPorts quantity	0	0
Mini DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	1	0
Firewire (IEEE 1394) ports	0	0
Thunderbolt ports quantity	0	0
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
ExpressCard slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Headphone connectivity	3.5 mm	3.5 mm
Microphone connectivity	3.5 mm	3.5 mm
Performance1 differ
Motherboard chipsetDiffers	Intel® HM75 Express	Intel HM67 Express
Keyboard1 differ
Pointing deviceDiffers	Touchpad	Touchpad + Accupoint
Keyboard backlitKnown for one	Unknown — not stated by the source	Yes
Numeric keypad	No	No
Spill-resistant keyboardKnown for one	Unknown — not stated by the source	Yes
Full-size keyboardKnown for one	Unknown — not stated by the source	Yes
Windows keys	Yes	Yes
Software1 differ
Operating system installedDiffers	FreeDOS	Windows 7 Home Premium
Operating system architectureKnown for one	Unknown — not stated by the source	64-bit
Drivers included	Yes	Yes
Processor special features7 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 lithographyDiffers	22 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	65700	53452
Processor codeDiffers	SR0N2	SR04Z
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 processorDiffers	Yes	No
Battery2 differ
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cellsDiffers	6	8
Battery capacityDiffers	48 Wh	64 Wh
Battery life (max)Known for one	Unknown — not stated by the source	8.22 h
Power1 differ
AC adapter powerDiffers	65 W	90 W
AC adapter frequency	50 - 60 Hz	50 - 60 Hz
AC adapter input voltageKnown for one	Unknown — not stated by the source	100 - 240 V
DC-in jack	Yes	Yes
Security1 differ
Cable lock slotDiffers	Yes	No
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	EPEAT Silver, ENERGY STAR
Weight & dimensions5 differ
WeightDiffers	2.2 kg	2.51 kg
WidthDiffers	342 mm	384.9 mm
DepthDiffers	244 mm	260.4 mm
HeightKnown for one	Unknown — not stated by the source	24.7 mm
Width (imperial)Differs	34.2 cm (13.5")	38.5 cm (15.2")
Depth (imperial)Differs	24.4 cm (9.61")	26 cm (10.2")
Height (imperial)Known for one	Unknown — not stated by the source	2.46 cm (0.97")
Height (front)Known for one	3.15 cm	Unknown — not stated by the source
Height (rear)Known for one	3.47 cm	Unknown — not stated by the source
Height (front) (imperial)Known for one	3.15 cm (1.24")	Unknown — not stated by the source
Height (rear) (imperial)Known for one	3.48 cm (1.37")	Unknown — not stated by the source
Packaging contentidentical
AC adapter included	Yes	Yes
ManualKnown for one	Unknown — not stated by the source	Yes
Quick start guide	Yes	Yes
Warranty cardKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
Infrared data port	No	No
Number of products included	1 pc(s)	1 pc(s)
Power supply type	AC/DC	AC/DC
Supplied AC adapter type	AC	AC

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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