Product comparison · 2 laptops

Lenovo IdeaPad U450p Intel® Pentium® SU4100 vs Lenovo IdeaPad Y550P Intel® Core™ i7 i7-720QM

162specifications compared
56differ
106identical
21known for one product only

Key differences

Display diagonal
- IdeaPad U450p Intel® Pentium® SU4100:35.6 cm (14")
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:39.6 cm (15.6")
Processor family
- IdeaPad U450p Intel® Pentium® SU4100:Intel® Pentium®
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:Intel® Core™ i7
Processor model
- IdeaPad U450p Intel® Pentium® SU4100:SU4100
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:i7-720QM
Processor cores
- IdeaPad U450p Intel® Pentium® SU4100:2
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:4
Processor threads
- IdeaPad U450p Intel® Pentium® SU4100:2
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:8
Processor frequency
- IdeaPad U450p Intel® Pentium® SU4100:1.3 GHz
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:1.6 GHz
Processor cache
- IdeaPad U450p Intel® Pentium® SU4100:2 MB
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:6 MB
Processor cache type
- IdeaPad U450p Intel® Pentium® SU4100:L2
- IdeaPad Y550P Intel® Core™ i7 i7-720QM:Smart Cache

Side by side

Differences highlightedShow differences only

Comparison of U450p, Y550P
183 specifications	A Lenovo IdeaPad U450p Intel® Pentium® SU4100 Model U450p View product	B Lenovo IdeaPad Y550P Intel® Core™ i7 i7-720QM Model Y550P View product
Designidentical
Product colour	Black	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
HD type	HD	HD
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display surface	Gloss	Gloss
Display brightness	220 cd/m²	220 cd/m²
Contrast ratio (typical)	500:1	500:1
Processor14 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Pentium®	Intel® Core™ i7
Processor generationKnown for one	Unknown — not stated by the source	Intel® Core™ i7
Processor modelDiffers	SU4100	i7-720QM
Processor coresDiffers	2	4
Processor threadsDiffers	2	8
Processor boost frequencyKnown for one	Unknown — not stated by the source	2.8 GHz
Processor frequencyDiffers	1.3 GHz	1.6 GHz
System bus rateKnown for one	Unknown — not stated by the source	2.5 GT/s
Processor cacheDiffers	2 MB	6 MB
Processor cache typeDiffers	L2	Smart Cache
Processor socketDiffers	BGA 956	Socket 988
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesKnown for one	Unknown — not stated by the source	Intel Core i7-700 Mobile Series
Processor codenameDiffers	Penryn	Clarksfield
Bus typeDiffers	FSB	DMI
FSB Parity	No	No
SteppingDiffers	R0	B1
Thermal Design Power (TDP)Differs	10 W	45 W
TjunctionKnown for one	Unknown — not stated by the source	100 °C
Maximum number of PCI Express lanesKnown for one	Unknown — not stated by the source	16
PCI Express configurationsKnown for one	Unknown — not stated by the source	1x16, 2x8
PCI Express slots versionKnown for one	Unknown — not stated by the source	2.0
Number of Processing Die TransistorsDiffers	410 M	774 M
Processing Die sizeDiffers	107 mm²	296 mm²
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	12
ECC supported by processor	No	No
Processor front side busKnown for one	800 MHz	Unknown — not stated by the source
Motherboard southbridgeKnown for one	Intel ICH9M	Unknown — not stated by the source
TcaseKnown for one	100 °C	Unknown — not stated by the source
Memory2 differ
Internal memoryDiffers	3 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1066 MHz	1066 MHz
Memory layout (slots x size)Differs	1 x 1 + 1 x 2 GB	2 x 2 GB
Memory slots	2x SO-DIMM	2x SO-DIMM
Memory slots (available)	0	0
Maximum internal memory	8 GB	8 GB
Storage3 differ
Total storage capacityDiffers	250 GB	500 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacityDiffers	250 GB	500 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
Optical drive type	DVD±RW	DVD±RW
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD	Memory Stick (MS), MMC, MS PRO, SD, xD
Graphics5 differ
On-board graphics cardDiffers	Yes	No
Discrete graphics cardDiffers	No	Yes
Discrete graphics card modelDiffers	Not available	NVIDIA® GeForce® GT 240M
Graphics card familyDiffers	Intel	NVIDIA
On-board graphics card modelDiffers	Intel® GMA 4500MHD	Not available
Number of discrete graphics cardsKnown for one	Unknown — not stated by the source	1
On-board graphics card familyKnown for one	Intel® GMA	Unknown — not stated by the source
Audio2 differ
Audio systemDiffers	Dolby Home Sound Room	Dolby Home Theater
Built-in speaker(s)	Yes	Yes
Number of built-in speakers	2	2
Speaker powerDiffers	1.5 W	2 W
Built-in microphone	Yes	Yes
Cameraidentical
Front camera resolution (numeric)	1.3 MP	1.3 MP
Swivel webcam	No	No
Optical driveidentical
LightScribe	No	No
Labelflash	No	No
Network2 differ
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Wi-Fi standardsDiffers	802.11b, 802.11g	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Wi-Fi data rate (max)Differs	54 Mbit/s	150 Mbit/s
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Bluetooth	No	No
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Network connection type	RJ-45	RJ-45
LAN controllerKnown for one	Realtek RTL8111D(L)	Unknown — not stated by the source
Ports & interfaces2 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	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
DisplayPorts quantity	0	0
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
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
TV-out	No	No
Performance1 differ
Motherboard chipsetDiffers	Intel® GS45 Express	Intel® PM55 Express
Keyboardidentical
Pointing device	Touchpad	Touchpad
Numeric keypad	No	No
Full-size keyboard	Yes	Yes
Windows keys	Yes	Yes
Software1 differ
Operating system installed	Windows 7 Home Premium	Windows 7 Home Premium
Operating system architectureDiffers	32-bit	64-bit
Processor special features11 differ
Intel® Wireless Display (Intel® WiDi)	No	No
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle StatesKnown for one	Unknown — not stated by the source	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt StateDiffers	No	Yes
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Differs	No	Yes
Intel Virtualization Technology (VT-x)Differs	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Intel® Turbo Boost TechnologyDiffers	No	1.0
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Processor ARK IDDiffers	43568	43122
Processor codeDiffers	SLGS4	SLBLY
Processor package sizeDiffers	22 x22 mm	37.5 x 37.5 mm
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Thermal Monitoring TechnologiesDiffers	No	Yes
Conflict-Free processor	No	No
Battery1 differ
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cells	6	6
Battery life (max)Differs	6 h	3.5 h
Power1 differ
AC adapter powerDiffers	65 W	90 W
Power auto-sensing	Yes	Yes
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Password protection typeDiffers	HDD, Power on, Supervisor	HDD, Supervisor, User
Certificatesidentical
Compliance certificates	RoHS	RoHS
Sustainabilityidentical
Sustainability certificates	EPEAT Silver, ENERGY STAR	EPEAT Silver, ENERGY STAR
Weight & dimensions9 differ
WeightDiffers	2.1 kg	2.75 kg
WidthDiffers	338.5 mm	385 mm
DepthDiffers	235.5 mm	255 mm
Height (front)Differs	2.3 cm	2.6 cm
Height (rear)Differs	2.89 cm	3.7 cm
Width (imperial)Differs	33.8 cm (13.3")	38.6 cm (15.2")
Depth (imperial)Differs	23.6 cm (9.3")	25.4 cm (10")
Height (front) (imperial)Differs	2.29 cm (0.9")	2.59 cm (1.02")
Height (rear) (imperial)Differs	2.79 cm (1.1")	3.81 cm (1.5")
Videoidentical
HD-Ready	Yes	Yes
Packaging contentidentical
AC adapter included	Yes	Yes
Cables included	AC	AC
Manual	Yes	Yes
Quick start guide	Yes	Yes
Other featuresidentical
Infrared data port	No	No
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Plug and Play	Yes	Yes
Power supply type	AC/DC	AC/DC
Volume control	Digital	Digital
Wake-on-LAN ready	Yes	Yes
Supplied AC adapter type	AC	AC
3DKnown for one	No	Unknown — not stated by the source

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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