Product comparison · 2 laptops

Lenovo IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop vs Lenovo IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop

127specifications compared
33differ
94identical
21known for one product only

Key differences

Product colour
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:White
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:Black
Display diagonal
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:35.6 cm (14")
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:39.6 cm (15.6")
Processor family
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:Intel® Celeron®
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:Intel® Core™ i7
Processor model
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:2957U
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:i7-4510U
Processor threads
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:2
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:4
Processor frequency
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:1.4 GHz
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:2 GHz
Processor cache
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:2 MB
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:4 MB
Maximum number of PCI Express lanes
- IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop:10
- IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop:12

Side by side

Differences highlightedShow differences only

Comparison of G40-70MA-CTW, G50-70AT-ISE
148 specifications	A Lenovo IdeaPad G40-70MA-CTW Intel® Celeron® 2957U Laptop Model G40-70MA-CTW View product	B Lenovo IdeaPad G50-70AT-ISE Intel® Core™ i7 i7-4510U Laptop Model G50-70AT-ISE View product
Design1 differ
Product type	Laptop	Laptop
Product colourDiffers	White	Black
Form factor	Clamshell	Clamshell
Display1 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
Touchscreen	No	No
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Processor8 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron®	Intel® Core™ i7
Processor generationKnown for one	Unknown — not stated by the source	4th gen Intel® Core™ i7
Processor modelDiffers	2957U	i7-4510U
Processor cores	2	2
Processor threadsDiffers	2	4
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.1 GHz
Processor frequencyDiffers	1.4 GHz	2 GHz
System bus rate	5 GT/s	5 GT/s
Processor cacheDiffers	2 MB	4 MB
Processor cache type	Smart Cache	Smart Cache
Processor socket	BGA 1168	BGA 1168
Processor lithography	22 nm	22 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Celeron Processor 2000 Series for Mobile	Intel Core i7-4500 Mobile series
Processor codename	Haswell	Haswell
Bus type	DMI2	DMI2
FSB Parity	No	No
Stepping	D0	D0
Thermal Design Power (TDP)	15 W	15 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanesDiffers	10	12
PCI Express configurationsDiffers	4x1, 1x4	4x1, 2x4
PCI Express slots version	2.0	2.0
ECC supported by processor	No	No
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1600 MHz	1600 MHz
Maximum internal memory	16 GB	16 GB
Storage2 differ
Total storage capacityDiffers	500 GB	1 TB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacityDiffers	500 GB	1 TB
Optical drive type	DVD Super Multi	DVD Super Multi
Card reader integrated	Yes	Yes
Graphics3 differ
On-board graphics card	Yes	Yes
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	NVIDIA® GeForce® GT 820M	AMD Radeon R5 M230
Discrete graphics card memory	2 GB	2 GB
Discrete graphics memory type	GDDR3	GDDR3
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 4400
Maximum on-board graphics card memoryKnown for one	Unknown — not stated by the source	1.74 GB
On-board graphics card base frequency	200 MHz	200 MHz
On-board graphics card dynamic frequency (max)Differs	1000 MHz	1100 MHz
On-board graphics card DirectX versionKnown for one	Unknown — not stated by the source	11.2/12
On-board graphics card OpenGL versionKnown for one	Unknown — not stated by the source	4.3
On-board graphics card IDKnown for one	Unknown — not stated by the source	0xA16
Audioidentical
Built-in microphone	Yes	Yes
Cameraidentical
Front camera	Yes	Yes
Front camera resolution (numeric)Known for one	Unknown — not stated by the source	0.3 MP
Swivel webcam	No	No
Rear camera	No	No
Optical driveidentical
LightScribe	No	No
Networkidentical
Wi-Fi	Yes	Yes
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	No	No
Bluetooth	No	No
Ports & interfaces1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	1	1
HDMI ports quantity	1	1
DisplayPorts quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Thunderbolt ports quantity	0	0
Headphone outputs	1	1
S/PDIF out port	No	No
Docking connector	No	No
ExpressCard slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Number of SATA III connectorsDiffers	2	4
Total number of SATA connectorsKnown for one	2	Unknown — not stated by the source
Keyboard1 differ
Numeric keypadDiffers	No	Yes
Windows keys	Yes	Yes
Softwareidentical
Operating system installed	Windows 8	Windows 8
Processor special features15 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 Technology	No	No
Intel Enhanced Halt State	Yes	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Identity Protection Technology versionDiffers	0.00	1.00
Intel ME Firmware Version	9.5	9.5
Intel Rapid Storage Technology	Yes	Yes
Intel Secure Key Technology version	1.00	1.00
Intel Smart Connect Technology	Yes	Yes
Intel Smart Connect Technology version	1.00	1.00
Intel TSX-NI	No	No
Intel TSX-NI version	0.00	0.00
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)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)	Yes	Yes
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® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Intel® Virtualization Technology (Intel® VT)	VT-x	VT-x
Processor ARK IDDiffers	78942	81015
Processor codeDiffers	SR1DV	SR1EB
Processor package size	40 x 24 x 1.5 mm	40 x 24 x 1.5 mm
Supported instruction setsDiffers	SSE4.1, SSE4.2	AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	Yes	Yes
Intel Small Business Advantage (SBA) versionKnown for one	0.00	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® Matrix Storage Technology (Intel® MST)Known for one	No	Unknown — not stated by the source
Intel® OS GuardKnown for one	No	Unknown — not stated by the source
Intel® Small Business Advantage (Intel® SBA)Known for one	No	Unknown — not stated by the source
Intel® Smart Response TechnologyKnown for one	No	Unknown — not stated by the source
UARTKnown for one	Yes	Unknown — not stated by the source
Batteryidentical
Number of battery cellsKnown for one	Unknown — not stated by the source	4
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	No	No
Weight & dimensions1 differ
WeightKnown for one	Unknown — not stated by the source	2.5 kg
WidthKnown for one	Unknown — not stated by the source	384 mm
DepthKnown for one	Unknown — not stated by the source	265 mm
HeightDiffers	24.9 mm	25 mm
Packaging contentidentical
AC adapter included	Yes	Yes

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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