Product comparison · 2 laptops

Lenovo Essential G40 Intel® Celeron® 2957U Laptop vs Lenovo IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop

120specifications compared
50differ
70identical
47known for one product only

Key differences

Touchscreen
- Essential G40 Intel® Celeron® 2957U Laptop:No
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:Yes
Processor family
- Essential G40 Intel® Celeron® 2957U Laptop:Intel® Celeron®
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:Intel® Core™ i5
Processor model
- Essential G40 Intel® Celeron® 2957U Laptop:2957U
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:i5-3337U
Processor threads
- Essential G40 Intel® Celeron® 2957U Laptop:2
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:4
Processor frequency
- Essential G40 Intel® Celeron® 2957U Laptop:1.4 GHz
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:1.8 GHz
Processor cache
- Essential G40 Intel® Celeron® 2957U Laptop:2 MB
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:3 MB
Processor socket
- Essential G40 Intel® Celeron® 2957U Laptop:BGA 1168
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:BGA 1023
Processor codename
- Essential G40 Intel® Celeron® 2957U Laptop:Haswell
- IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop:Ivy Bridge

Side by side

Differences highlightedShow differences only

Comparison of G40, S400T-IFI
167 specifications	A Lenovo Essential G40 Intel® Celeron® 2957U Laptop Model G40 View product	B Lenovo IdeaPad S400T-IFI Intel® Core™ i5 i5-3337U Laptop Model S400T-IFI View product
Designidentical
Product type	Laptop	Laptop
Product colour	Black	Black
Form factor	Clamshell	Clamshell
Display1 differ
Display diagonal	35.6 cm (14")	35.6 cm (14")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
TouchscreenDiffers	No	Yes
HD typeKnown for one	HD	Unknown — not stated by the source
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Dual-screenKnown for one	No	Unknown — not stated by the source
Processor14 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i5
Processor modelDiffers	2957U	i5-3337U
Processor cores	2	2
Processor threadsDiffers	2	4
Processor frequencyDiffers	1.4 GHz	1.8 GHz
System bus rate	5 GT/s	5 GT/s
Processor cacheDiffers	2 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socketDiffers	BGA 1168	BGA 1023
Processor lithography	22 nm	22 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Celeron Processor 2000 Series for Mobile	Intel Core i5-3300 Mobile series
Processor codenameDiffers	Haswell	Ivy Bridge
Bus typeDiffers	DMI2	DMI
FSB Parity	No	No
SteppingDiffers	D0	L1
Thermal Design Power (TDP)Differs	15 W	17 W
TjunctionDiffers	100 °C	105 °C
Maximum number of PCI Express lanesDiffers	10	16
PCI Express configurationsDiffers	4x1, 1x4	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
ECC supported by processor	No	No
Processor generationKnown for one	Unknown — not stated by the source	3rd gen Intel® Core™ i5
Processor boost frequencyKnown for one	Unknown — not stated by the source	2.7 GHz
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	18
Memory1 differ
Internal memory	4 GB	4 GB
Internal memory typeDiffers	DDR3L-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Known for one	1 x 4 GB	Unknown — not stated by the source
Maximum internal memoryKnown for one	16 GB	Unknown — not stated by the source
Storage1 differ
Total storage capacity	500 GB	500 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
Optical drive typeDiffers	DVD±RW	No
Card reader integrated	Yes	Yes
Compatible memory cards	MMC, SD	MMC, SD
Graphics3 differ
On-board graphics card	Yes	Yes
Discrete graphics card	No	No
Discrete graphics card model	Not available	Not available
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 4000
On-board graphics card base frequencyDiffers	200 MHz	350 MHz
On-board graphics card dynamic frequency (max)Differs	1000 MHz	1100 MHz
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x166
Graphics card Open GL supportKnown for one	Unknown — not stated by the source	Yes
Audio1 differ
Audio systemDiffers	Dolby Advanced Audio v2	Dolby
Built-in microphoneKnown for one	Unknown — not stated by the source	Yes
Cameraidentical
Front camera	Yes	Yes
Network1 differ
Wi-Fi	Yes	Yes
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100 Mbit/s	10,100 Mbit/s
BluetoothDiffers	Yes	No
Bluetooth versionKnown for one	4.0	Unknown — not stated by the source
Wi-Fi standardsKnown for one	Unknown — not stated by the source	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Integrated 4G WiMAXKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces1 differ
USB 2.0 ports quantity	2	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	1	1
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	1	1
DisplayPorts quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	1	0
Thunderbolt ports quantity	0	0
Thunderbolt 2 ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputsKnown for one	1	Unknown — not stated by the source
S/PDIF out port	No	No
Combo headphone/mic port	Yes	Yes
Microphone inKnown for one	Yes	Unknown — not stated by the source
ExpressCard slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Total number of SATA connectorsKnown for one	2	Unknown — not stated by the source
Number of SATA III connectorsKnown for one	2	Unknown — not stated by the source
Docking connectorKnown for one	Unknown — not stated by the source	No
Keyboardidentical
Numeric keypad	No	No
Windows keys	Yes	Yes
Island-style keyboardKnown for one	Unknown — not stated by the source	Yes
Software1 differ
Operating system installedDiffers	FreeDOS	Windows 8
Processor special features22 differ
Intel® Wireless Display (Intel® WiDi)Differs	No	Yes
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyDiffers	Yes	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Identity Protection Technology versionDiffers	0.00	1.00
Intel ME Firmware VersionKnown for one	9.5	Unknown — not stated by the source
Intel Rapid Storage TechnologyDiffers	Yes	No
Intel Secure Key Technology version	1.00	1.00
Intel Small Business Advantage (SBA) versionKnown for one	0.00	Unknown — not stated by the source
Intel Smart Connect TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Smart Connect Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Smart Response Technology versionKnown for one	0.00	Unknown — not stated by the source
Intel Stable Image Platform Program (SIPP)Known for one	No	Unknown — not stated by the source
Intel Stable Image Platform Program (SIPP) versionKnown for one	0.00	Unknown — not stated by the source
Intel TSX-NIKnown for one	No	Unknown — not stated by the source
Intel TSX-NI versionKnown for one	0.00	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)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)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Differs	Yes	No
Intel® High Definition Audio (Intel® HD Audio)Known for one	Yes	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Identity Protection Technology (Intel® IPT)Differs	No	Yes
Intel® InTru™ 3D TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® Matrix Storage Technology (Intel® MST)Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Differs	No	Yes
Intel® OS GuardKnown for one	No	Unknown — not stated by the source
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Small Business Advantage (Intel® SBA)Known for one	No	Unknown — not stated by the source
Intel® Smart Cache	Yes	Yes
Intel® Smart Response TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	78942	72055
Processor codeDiffers	SR1DV	SR0XL
Processor package sizeDiffers	40 x 24 x 1.5 mm	31 x 24 (BGA1023)
Supported instruction setsDiffers	SSE4.1, SSE4.2	AVX
Thermal Monitoring Technologies	Yes	Yes
UARTKnown for one	Yes	Unknown — not stated by the source
Conflict-Free processor	Yes	Yes
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	22 nm
Batteryidentical
Number of battery cells	4	4
Battery life (max)Known for one	4 h	Unknown — not stated by the source
Battery technologyKnown for one	Unknown — not stated by the source	Lithium-Ion (Li-Ion)
Poweridentical
AC adapter frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
AC adapter input voltage	100 - 240 V	100 - 240 V
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	No	No
Operational conditionsidentical
Operating temperature (T-T)Known for one	5 - 35 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	5 - 43 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	8 - 95%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	0 - 2438 m	Unknown — not stated by the source
Weight & dimensions4 differ
WeightDiffers	2.1 kg	1.8 kg
WidthDiffers	349 mm	336.6 mm
DepthDiffers	245 mm	241.2 mm
HeightDiffers	24.8 mm	21.9 mm
Packaging contentidentical
AC adapter included	Yes	Yes
ManualKnown for one	Yes	Unknown — not stated by the source
Power cord included	Yes	Yes
Quick start guideKnown for one	Yes	Unknown — not stated by the source
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	No

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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