Product comparison · 2 laptops

Lenovo ThinkPad T400 Intel® Core™2 Duo P9500 vs Lenovo ThinkPad SL400

76specifications compared
33differ
43identical
49known for one product only

Key differences

Display resolution
- ThinkPad T400 Intel® Core™2 Duo P9500:1440 x 900 pixels
- ThinkPad SL400:1280 x 800 pixels
Processor model
- ThinkPad T400 Intel® Core™2 Duo P9500:P9500
- ThinkPad SL400:T5670
Processor frequency
- ThinkPad T400 Intel® Core™2 Duo P9500:2.53 GHz
- ThinkPad SL400:1.8 GHz
Processor cache
- ThinkPad T400 Intel® Core™2 Duo P9500:6 MB
- ThinkPad SL400:2 MB
Processor front side bus
- ThinkPad T400 Intel® Core™2 Duo P9500:1066 MHz
- ThinkPad SL400:800 MHz
Processor lithography
- ThinkPad T400 Intel® Core™2 Duo P9500:45 nm
- ThinkPad SL400:65 nm
Processor operating modes
- ThinkPad T400 Intel® Core™2 Duo P9500:32-bit, 64-bit
- ThinkPad SL400:64-bit
Processor codename
- ThinkPad T400 Intel® Core™2 Duo P9500:Penryn
- ThinkPad SL400:Merom

Side by side

Differences highlightedShow differences only

Comparison of T400, ThinkPad SL400
125 specifications	A Lenovo ThinkPad T400 Intel® Core™2 Duo P9500 Model T400 View product	B Lenovo ThinkPad SL400 View product
Display1 differ
Display resolutionDiffers	1440 x 900 pixels	1280 x 800 pixels
Display surfaceKnown for one	Matt	Unknown — not stated by the source
Dual-screenKnown for one	No	Unknown — not stated by the source
Contrast ratio (typical)Known for one	300:1	Unknown — not stated by the source
Processor13 differ
Processor modelDiffers	P9500	T5670
Processor frequencyDiffers	2.53 GHz	1.8 GHz
Processor cacheDiffers	6 MB	2 MB
Processor front side busDiffers	1066 MHz	800 MHz
Processor lithographyDiffers	45 nm	65 nm
Processor operating modesDiffers	32-bit, 64-bit	64-bit
Processor seriesKnown for one	Intel Core 2 Duo P9000 Series	Unknown — not stated by the source
Processor codenameDiffers	Penryn	Merom
FSB ParityKnown for one	No	Unknown — not stated by the source
SteppingDiffers	C0	M0
Thermal Design Power (TDP)Differs	25 W	35 W
TjunctionDiffers	105 °C	100 °C
Processor core voltage (AC)Known for one	1.062 - 1.150 V	Unknown — not stated by the source
Number of Processing Die TransistorsDiffers	410 M	291 M
Processing Die sizeDiffers	107 mm²	143 mm²
CPU multiplier (bus/core ratio)Differs	9.4	9
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memoryidentical
Memory clock speedKnown for one	1066 MHz	Unknown — not stated by the source
Internal memory typeKnown for one	Unknown — not stated by the source	DDR2-SDRAM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 1 GB
Memory slotsKnown for one	Unknown — not stated by the source	2x SO-DIMM
Storage2 differ
Total storage capacityDiffers	320 GB	160 GB
Compatible memory cardsDiffers	MMC, SD, SDHC, XD	MMC, MS Pro, SD, SDHC, xD
Graphics1 differ
Discrete graphics card modelDiffers	AMD Mobility Radeon HD 3470	Intel® GMA X4500
Maximum graphics card memoryKnown for one	0.256 GB	Unknown — not stated by the source
Cameraidentical
Front camera resolution (numeric)Known for one	1.3 MP	Unknown — not stated by the source
Networkidentical
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Wireless technologyKnown for one	Unknown — not stated by the source	IEEE 802.11a/g/n
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers	3	4
HDMI ports quantityDiffers	0	1
Headphone outputsDiffers	2	1
SmartCard slotDiffers	No	Yes
Processor special features6 differ
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
Embedded options availableKnown for one	No	Unknown — not stated by the source
Execute Disable BitDiffers	Yes	No
Idle StatesDiffers	No	Yes
Intel Clear Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for one	No	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	No	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	No	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel VT-x with Extended Page Tables (EPT)Known for one	No	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Differs	Yes	No
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	No	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for one	No	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	No	Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	No	Unknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	No	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for one	No	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Processor ARK IDDiffers	35566	35163
Processor codeDiffers	SLGE8	SLAJ5
Thermal Monitoring TechnologiesKnown for one	No	Unknown — not stated by the source
Conflict-Free processorKnown for one	No	Unknown — not stated by the source
Battery1 differ
Number of battery cellsDiffers	4	6
Battery life (max)Known for one	Unknown — not stated by the source	4 h
Weight & dimensions4 differ
WeightDiffers	2.3 kg	2.5 kg
WidthDiffers	335.5 mm	336 mm
DepthDiffers	238 mm	247 mm
HeightDiffers	32 mm	34 mm
Dimensions (WxDxH)Known for one	335.5 x 238 x 32 mm	Unknown — not stated by the source
Other features1 differ
Intel segment taggingKnown for one	Home office, Small Business	Unknown — not stated by the source
Supplied AC adapter typeDiffers	AC, UP	AC
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Modem typeKnown for one	Unknown — not stated by the source	V.90
Audioidentical
Audio systemKnown for one	Unknown — not stated by the source	Conexant Azalia Audio Codec
Number of built-in speakersKnown for one	Unknown — not stated by the source	2
Speaker powerKnown for one	Unknown — not stated by the source	3 W
Keyboardidentical
Pointing deviceKnown for one	Unknown — not stated by the source	ThinkPad UltraNav
Securityidentical
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
HDD user passwordKnown for one	Unknown — not stated by the source	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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