Product comparison · 2 laptops

BenQ Joybook S57 vs Lenovo IdeaPad U450

91specifications compared
28differ
63identical
38known for one product only

Key differences

Display diagonal
- Joybook S57:39.6 cm (15.6")
- IdeaPad U450:14, 14.0
Processor family
- Joybook S57:Intel® Core™2 Duo
- IdeaPad U450:Intel® Pentium®
Processor model
- Joybook S57:P8700
- IdeaPad U450:SU4100
Processor frequency
- Joybook S57:2.53 GHz
- IdeaPad U450:1.3 GHz
Processor cache
- Joybook S57:3 MB
- IdeaPad U450:2 MB
Processor front side bus
- Joybook S57:1066 MHz
- IdeaPad U450:800 MHz
Processor socket
- Joybook S57:Socket 479
- IdeaPad U450:BGA 956
Thermal Design Power (TDP)
- Joybook S57:25 W
- IdeaPad U450:10 W

Side by side

Differences highlightedShow differences only

Comparison of Joybook S57, IdeaPad U450
129 specifications	A BenQ Joybook S57 View product	B Lenovo IdeaPad U450 View product
Display1 differ
Display diagonalDiffers	39.6 cm (15.6")	14, 14.0
Display response rise/fallKnown for one	8 ms	Unknown — not stated by the source
Processor7 differ
Processor familyDiffers	Intel® Core™2 Duo	Intel® Pentium®
Processor modelDiffers	P8700	SU4100
Processor frequencyDiffers	2.53 GHz	1.3 GHz
Processor cacheDiffers	3 MB	2 MB
Processor front side busDiffers	1066 MHz	800 MHz
Processor socketDiffers	Socket 479	BGA 956
Processor seriesKnown for one	Intel Core 2 Duo P8000 Series	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	25 W	10 W
TjunctionKnown for one	105 °C	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	9.5	Unknown — not stated by the source
TcaseKnown for one	Unknown — not stated by the source	100 °C
Memory2 differ
Internal memoryDiffers	2 GB	3 GB
Internal memory typeKnown for one	DDR2-SDRAM	Unknown — not stated by the source
Memory clock speedDiffers	800 MHz	1066 MHz
Memory layout (slots x size)Known for one	1 x 2 GB	Unknown — not stated by the source
Maximum internal memoryKnown for one	4 GB	Unknown — not stated by the source
Memory slotsKnown for one	Unknown — not stated by the source	2x SO-DIMM
Storage2 differ
Total storage capacityDiffers	500 GB	320 GB
Card reader integratedDiffers	Yes	No
HDD capacityKnown for one	Unknown — not stated by the source	320 GB
Graphics1 differ
Discrete graphics card modelDiffers	AMD Mobility Radeon HD 4650	Intel® GMA X4500
Maximum resolutionKnown for one	Unknown — not stated by the source	2048 x 1536 pixels
Audioidentical
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
Network1 differ
Bluetooth versionDiffers	2.0+EDR	2.1+EDR
Wireless technologyKnown for one	Unknown — not stated by the source	Broadcom 11b/g Wi-Fi wireless
Ethernet LANKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces5 differ
USB 2.0 ports quantityDiffers	4	0
Ethernet LAN (RJ-45) portsDiffers	1	0
HDMI ports quantityDiffers	1	0
VGA (D-Sub) ports quantityDiffers	1	0
Modem (RJ-11) portsDiffers	1	0
I/O portsKnown for one	Unknown — not stated by the source	VGA
Performanceidentical
Motherboard chipsetKnown for one	Intel® PM45 Express	Unknown — not stated by the source
Software1 differ
Operating system installedDiffers	Windows Vista Business	Windows 7 Home Premium
Trial softwareKnown for one	Microsoft Office Professional 2007	Unknown — not stated by the source
Bundled softwareKnown for one	．Power DVD ．Power2Go ．QDataTrove3.0 ．Norton Internet Security 2009 ．Adobe Reader ．WebCam Companion 3.0 ．ArcSoft Miv2	Unknown — not stated by the source
Processor special features6 differ
Idle StatesKnown for one	Yes	Unknown — not stated by the source
Intel Enhanced Halt StateDiffers	Yes	No
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel Virtualization Technology (VT-x)Differs	Yes	No
Processor ARK IDDiffers	37006	43568
Processor codeDiffers	SLGFE	SLGS4
Processor package sizeDiffers	35 x 35 mm	22 x22 mm
Batteryidentical
Battery capacityKnown for one	4400 mAh	Unknown — not stated by the source
Battery life (max)Known for one	2.5 h	Unknown — not stated by the source
Poweridentical
DC-in jackKnown for one	Yes	Unknown — not stated by the source
AC adapter powerKnown for one	Unknown — not stated by the source	65 W
Weight & dimensions1 differ
WeightDiffers	2.4 kg	1.6 kg
Dimensions (WxDxH)Known for one	260 x 35.5 x 380 mm	Unknown — not stated by the source
WidthKnown for one	Unknown — not stated by the source	338.5 mm
DepthKnown for one	Unknown — not stated by the source	235.5 mm
HeightKnown for one	Unknown — not stated by the source	23 mm
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source
Other features1 differ
Internal modemDiffers	Yes	No
Modem speedKnown for one	56 Kbit/s	Unknown — not stated by the source
Security featuresKnown for one	Unknown — not stated by the source	None
Battery typeKnown for one	Unknown — not stated by the source	6 Cell Lithium-Ion
Modem typeKnown for one	Unknown — not stated by the source	No
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
Cameraidentical
Front cameraKnown for one	Unknown — not stated by the source	No
Keyboardidentical
Pointing deviceKnown for one	Unknown — not stated by the source	Touchpad
Keyboard typeKnown for one	Unknown — not stated by the source	Full size
Hard driveidentical
Storage drive typeKnown for one	Unknown — not stated by the source	320GB SATA/ 5400

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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