Product comparison · 2 laptops

Lenovo ThinkPad R61u Intel® Core™2 Duo T8300 Laptop vs Lenovo ThinkPad W520 Intel® Core™ i7 i7-2820QM

128specifications compared
78differ
50identical
67known for one product only

Key differences

Display diagonal
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:35.8 cm (14.1")
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:39.6 cm (15.6")
Display resolution
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:1440 x 900 pixels
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:1920 x 1080 pixels
HD type
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:WXGA+
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:Full HD
Native aspect ratio
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:16:10
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:16:9
Processor family
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:Intel® Core™2 Duo
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:Intel® Core™ i7
Processor model
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:T8300
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:i7-2820QM
Processor cores
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:2
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:4
Processor threads
- ThinkPad R61u Intel® Core™2 Duo T8300 Laptop:2
- ThinkPad W520 Intel® Core™ i7 i7-2820QM:8

Side by side

Differences highlightedShow differences only

Comparison of R61u, W520
195 specifications	A Lenovo ThinkPad R61u Intel® Core™2 Duo T8300 Laptop Model R61u View product	B Lenovo ThinkPad W520 Intel® Core™ i7 i7-2820QM Model W520 View product
Designidentical
Product typeKnown for one	Laptop	Unknown — not stated by the source
Product colour	Black	Black
Form factorKnown for one	Clamshell	Unknown — not stated by the source
Housing materialKnown for one	Plastic	Unknown — not stated by the source
Display4 differ
Display diagonalDiffers	35.8 cm (14.1")	39.6 cm (15.6")
Display resolutionDiffers	1440 x 900 pixels	1920 x 1080 pixels
TouchscreenKnown for one	No	Unknown — not stated by the source
HD typeDiffers	WXGA+	Full HD
LED backlight	Yes	Yes
Native aspect ratioDiffers	16:10	16:9
Display brightnessKnown for one	200 cd/m²	Unknown — not stated by the source
Contrast ratio (typical)Known for one	300:1	Unknown — not stated by the source
Processor17 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™2 Duo	Intel® Core™ i7
Processor modelDiffers	T8300	i7-2820QM
Processor coresDiffers	2	4
Processor threadsDiffers	2	8
Processor frequencyDiffers	2.4 GHz	2.3 GHz
Processor cacheDiffers	3 MB	8 MB
Processor cache typeDiffers	L2	Smart Cache
Processor front side busDiffers	800 MHz	1600 MHz
Processor socketDiffers	Socket 479	Socket 1224
Processor lithographyDiffers	45 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core 2 Duo T8000 Series	Intel Core i7-2800 Mobile Series
Processor codenameDiffers	Penryn	Sandy Bridge
Bus typeDiffers	FSB	DMI
FSB Parity	No	No
SteppingDiffers	M0	D2
Thermal Design Power (TDP)Differs	35 W	45 W
TjunctionDiffers	105 °C	100 C
Number of Processing Die TransistorsKnown for one	410 M	Unknown — not stated by the source
Processing Die sizeKnown for one	107 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Differs	12	23
ECC supported by processor	No	No
Processor generationKnown for one	Unknown — not stated by the source	2nd gen Intel® Core™ i7
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.4 GHz
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, 1x8+2x4
PCI Express slots versionKnown for one	Unknown — not stated by the source	2.0
Memory4 differ
Internal memoryDiffers	1 GB	8 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR3-SDRAM
Memory clock speedDiffers	667 MHz	1333 MHz
Memory form factorKnown for one	SO-DIMM	Unknown — not stated by the source
Memory layout (slots x size)Known for one	1 x 1 GB	Unknown — not stated by the source
Memory slotsDiffers	2x SO-DIMM	4x SO-DIMM
Memory slots (available)Known for one	Unknown — not stated by the source	2
Maximum internal memoryKnown for one	Unknown — not stated by the source	32 GB
Storage4 differ
Total storage capacityDiffers	100 GB	500 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacityDiffers	100 GB	500 GB
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Optical drive typeDiffers	DVD±RW	DVD-RW
Card reader integratedDiffers	No	Yes
Compatible memory cardsKnown for one	Unknown — not stated by the source	MMC
Graphics4 differ
On-board graphics card	Yes	Yes
Discrete graphics cardDiffers	No	Yes
Discrete graphics card modelDiffers	Not available	NVIDIA® Quadro® 2000M
On-board graphics card familyDiffers	Intel® GMA	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® GMA X3100	Intel® HD Graphics 3000
Discrete graphics card memoryKnown for one	Unknown — not stated by the source	2 GB
Graphics card familyKnown for one	Unknown — not stated by the source	Intel, NVIDIA
Discrete graphics memory typeKnown for one	Unknown — not stated by the source	GDDR3
On-board graphics card base frequencyKnown for one	Unknown — not stated by the source	650 MHz
On-board graphics card dynamic frequency (max)Known for one	Unknown — not stated by the source	1300 MHz
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x116
Number of discrete graphics cardsKnown for one	Unknown — not stated by the source	1
Maximum resolutionKnown for one	Unknown — not stated by the source	1920 x 1080 pixels
Audioidentical
Audio systemKnown for one	High Definition Audio	Unknown — not stated by the source
Number of built-in speakers	2	2
Speaker power	1 W	1 W
Built-in microphone	Yes	Yes
Cameraidentical
Front cameraKnown for one	Yes	Unknown — not stated by the source
Front camera resolution (numeric)Known for one	1.3 MP	Unknown — not stated by the source
Optical driveidentical
LightScribeKnown for one	No	Unknown — not stated by the source
Network2 differ
Wi-Fi	Yes	Yes
Wi-Fi standardsDiffers	802.11a, 802.11b, 802.11g	802.11a, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
BluetoothDiffers	Yes	No
Bluetooth versionKnown for one	2.0+EDR	Unknown — not stated by the source
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Wireless technologyKnown for one	Unknown — not stated by the source	Wi-Fi
Cabling technologyKnown for one	Unknown — not stated by the source	10/100/1000Base-T(X)
Integrated 4G WiMAXKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces5 differ
USB 2.0 ports quantityDiffers	3	1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	0	2
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	0	0
DisplayPorts quantityDiffers	0	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) portsDiffers	1	0
Thunderbolt ports quantity	0	0
Thunderbolt 2 ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connector	No	No
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slotKnown for one	No	Unknown — not stated by the source
Modem (RJ-11) portsKnown for one	1	Unknown — not stated by the source
TV-out	No	No
Performance1 differ
Motherboard chipsetDiffers	Intel® GM965	Intel® QM67 Express
Keyboard2 differ
Pointing deviceDiffers	Touchpad + Scroll zone	ThinkPad UltraNav
Keyboard backlitKnown for one	Yes	Unknown — not stated by the source
Numeric keypad	No	No
Spill-resistant keyboardKnown for one	Yes	Unknown — not stated by the source
Full-size keyboardDiffers	No	Yes
Keyboard number of keysKnown for one	89	Unknown — not stated by the source
Windows keys	Yes	Yes
Keyboard layoutKnown for one	QWERTY	Unknown — not stated by the source
Keyboard languageKnown for one	English	Unknown — not stated by the source
Software2 differ
Operating system installedDiffers	Windows Vista Business	Windows 7 Professional
Operating system architectureDiffers	32-bit	64-bit
Trial softwareKnown for one	Norton Internet Security, Microsoft Office 2007 Trial	Unknown — not stated by the source
Bundled softwareKnown for one	Microsoft Office OneNote® 2007 VitalSource Library College Edition Adobe® Instructor Resource Cntr Adobe Digital School Collection - Photoshop Elements (and CD) - Premier Elements (and DVD) - Acrobat 8 Professional - Contribute 4 Rescue and Recovery Access Connections Client Security Solution ThinkV	Unknown — not stated by the source
Processor special features22 differ
Intel® Wireless Display (Intel® WiDi)Differs	No	Yes
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 Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Rapid Storage Technology	No	No
Intel Smart Connect TechnologyKnown for one	No	Unknown — not stated by the source
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Differs	No	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Active Management Technology (Intel® AMT)Known for one	No	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® High Definition Audio (Intel® HD Audio)Known for one	No	Unknown — not stated by the source
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® Matrix Storage Technology (Intel® MST)Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Differs	No	Yes
Intel® Quick Sync Video TechnologyDiffers	No	Yes
Intel® Rapid Start TechnologyKnown 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
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	33099	52227
Processor codeDiffers	SLAPR	SR00U
Processor package sizeDiffers	35 x 35 mm	37.5 x 37.5 (rPGA988B); 31.0 x 24.0 (BGA1224)
Thermal Monitoring TechnologiesDiffers	No	Yes
Conflict-Free processor	No	No
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	32 nm
Intel Identity Protection Technology versionKnown for one	Unknown — not stated by the source	1.00
Supported instruction setsKnown for one	Unknown — not stated by the source	AVX
Battery2 differ
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cellsDiffers	6	9
Battery life (max)Differs	5.7 h	8.9 h
Power1 differ
AC adapter powerDiffers	65 W	170 W
DC-in jack	Yes	Yes
Security1 differ
Cable lock slotDiffers	No	Yes
Fingerprint reader	Yes	Yes
Password protection typeKnown for one	Unknown — not stated by the source	HDD, Power on, Supervisor
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Sustainability1 differ
Sustainability certificatesDiffers	ENERGY STAR	EPEAT Gold, ENERGY STAR
Weight & dimensions5 differ
WeightDiffers	2.5 kg	3.11 kg
WidthDiffers	335 mm	372.8 mm
DepthDiffers	261 mm	245.1 mm
Height (front)Differs	3.06 cm	3.16 cm
Height (rear)Differs	3.49 cm	3.58 cm
Width (imperial)Known for one	Unknown — not stated by the source	37.3 cm (14.7")
Depth (imperial)Known for one	Unknown — not stated by the source	24.5 cm (9.65")
Height (front) (imperial)Known for one	Unknown — not stated by the source	3.2 cm (1.26")
Height (rear) (imperial)Known for one	Unknown — not stated by the source	3.58 cm (1.41")
Packaging contentidentical
AC adapter included	Yes	Yes
Other features1 differ
3DKnown for one	No	Unknown — not stated by the source
Supplied AC adapter typeDiffers	Up	AC
Infrared data portKnown for one	Unknown — not stated by the source	No
Compliance industry standardsKnown for one	Unknown — not stated by the source	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Intel segment taggingKnown for one	Unknown — not stated by the source	Professional

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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