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 resolution	1366 x 768 pixels	1366 x 768 pixels
Native aspect ratio	16:9	16:9
Display response rise/fallKnown for one	8 ms	Unknown — not stated by the source
Processor7 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™2 Duo	Intel® Pentium®
Processor modelDiffers	P8700	SU4100
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	2.53 GHz	1.3 GHz
Processor cacheDiffers	3 MB	2 MB
Processor cache type	L2	L2
Processor front side busDiffers	1066 MHz	800 MHz
Processor socketDiffers	Socket 479	BGA 956
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesKnown for one	Intel Core 2 Duo P8000 Series	Unknown — not stated by the source
Processor codename	Penryn	Penryn
Bus type	FSB	FSB
FSB Parity	No	No
Stepping	R0	R0
Thermal Design Power (TDP)Differs	25 W	10 W
TjunctionKnown for one	105 °C	Unknown — not stated by the source
Number of Processing Die Transistors	410 M	410 M
Processing Die size	107 mm²	107 mm²
CPU multiplier (bus/core ratio)Known for one	9.5	Unknown — not stated by the source
ECC supported by processor	No	No
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
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Card reader integratedDiffers	Yes	No
HDD capacityKnown for one	Unknown — not stated by the source	320 GB
Graphics1 differ
Discrete graphics card	Yes	Yes
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	Yes	Yes
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
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	1	0
Firewire (IEEE 1394) ports	0	0
Headphone outputs	0	0
S/PDIF out port	No	No
Microphone in	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
Modem (RJ-11) portsDiffers	1	0
TV-in port	No	No
TV-out	No	No
PS/2 ports quantity	0	0
Parallel ports quantity	0	0
Serial ports quantity	0	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
Intel® Wireless Display (Intel® WiDi)	No	No
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle StatesKnown for one	Yes	Unknown — not stated by the source
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	Yes	No
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	Yes	No
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)Differs	Yes	No
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
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)	No	No
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® Turbo Boost Technology	No	No
Processor ARK IDDiffers	37006	43568
Processor codeDiffers	SLGFE	SLGS4
Processor package sizeDiffers	35 x 35 mm	22 x22 mm
Thermal Monitoring Technologies	No	No
Conflict-Free processor	No	No
Batteryidentical
Number of battery cells	6	6
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
Infrared data port	No	No
Internal modemDiffers	Yes	No
Modem speedKnown for one	56 Kbit/s	Unknown — not stated by the source
Supplied AC adapter type	AC	AC
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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