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Product comparison · 2 laptops

Lenovo Essential 575 E-350 vs Lenovo T520 + ThinkPad Mini Dock Series 3

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  • 57specifications compared
  • 28differ
  • 29identical
  • 91known for one product only

Key differences

  • Processor model
    • E-350
    • i5-2410M
  • Processor frequency
    • 1.6 GHz
    • 2.3 GHz
  • Processor cache
    • 1 MB
    • 3 MB
  • Processor cache type
    • L2
    • Smart Cache
  • Internal memory
    • 2 GB
    • 4 GB
  • HDD speed
    • 5400 RPM
    • 7200 RPM
  • Optical drive type
    • DVD Super Multi DL
    • DVD-RW
  • Compatible memory cards
    • MMC, SD
    • MMC, SD, SDHC, SDXC

Side by side

Differences highlightedShow differences only
148 specifications
A

Lenovo

Essential 575 E-350

Model 575

View product
B

Lenovo

T520 + ThinkPad Mini Dock Series 3View product
Displayidentical
Display diagonal39.6 cm (15.6")39.6 cm (15.6")
Display resolution1366 x 768 pixels1366 x 768 pixels
LED backlightYesYes
Native aspect ratio16:916:9
Display brightnessKnown for one220 cd/m²
Contrast ratio (typical)Known for one500:1
Processor4 differ
Processor manufacturerKnown for oneIntel
Processor familyKnown for oneIntel® Core™ i5
Processor generationKnown for one2nd gen Intel® Core™ i5
Processor modelDiffersE-350i5-2410M
Processor coresKnown for one2
Processor threadsKnown for one4
Processor boost frequencyKnown for one2.9 GHz
Processor frequencyDiffers1.6 GHz2.3 GHz
System bus rateKnown for one5 GT/s
Processor cacheDiffers1 MB3 MB
Processor cache typeDiffersL2Smart Cache
Processor socketKnown for oneBGA 1023
Processor lithographyKnown for one32 nm
Processor operating modesKnown for one64-bit
Processor seriesKnown for oneIntel Core i5-2400 Mobile Series
Processor codenameKnown for oneSandy Bridge
Bus typeKnown for oneDMI
FSB ParityKnown for oneNo
SteppingKnown for oneJ1
Thermal Design Power (TDP)Known for one35 W
TjunctionKnown for one100 °C
Maximum number of PCI Express lanesKnown for one16
PCI Express configurationsKnown for one1x8, 1x16, 2x4, 2x8
PCI Express slots versionKnown for one2.0
CPU multiplier (bus/core ratio)Known for one23
ECC supported by processorKnown for oneNo
Memory1 differ
Internal memoryDiffers2 GB4 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory clock speedKnown for one1333 MHz
Memory layout (slots x size)Known for one2 x 2 GB
Memory slots2x SO-DIMM2x SO-DIMM
Maximum internal memory8 GB8 GB
Storage3 differ
Total storage capacity320 GB320 GB
Number of HDDs installed11
HDD interfaceSATASATA
HDD speedDiffers5400 RPM7200 RPM
Optical drive typeDiffersDVD Super Multi DLDVD-RW
Card reader integratedYesYes
Compatible memory cardsDiffersMMC, SDMMC, SD, SDHC, SDXC
HDD capacityKnown for one320 GB
Graphics4 differ
On-board graphics cardDiffersNoYes
Discrete graphics cardYesYes
Discrete graphics card modelDiffersAMD Radeon HD 6310MIntel® HD Graphics 3000
Graphics card familyDiffersAMDIntel
On-board graphics card familyKnown for oneIntel® HD Graphics
On-board graphics card modelDiffersNot availableIntel® HD Graphics 3000
On-board graphics card base frequencyKnown for one650 MHz
On-board graphics card dynamic frequency (max)Known for one1200 MHz
On-board graphics card IDKnown for one0x116
Audio1 differ
Audio systemKnown for oneHigh Definition Audio
Number of built-in speakers22
Speaker powerDiffers1.5 W1 W
Built-in microphoneKnown for oneYes
Network1 differ
Wi-FiYesYes
Networking featuresKnown for oneGigabit Ethernet
Ethernet LANYesYes
BluetoothDiffersNoYes
Integrated 4G WiMAXKnown for oneYes
Top Wi-Fi standardKnown for oneWi-Fi 4 (802.11n)
Wi-Fi standardsKnown for one802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technologyKnown for one10/100Base-T(X)
Ports & interfaces5 differ
USB 2.0 ports quantity44
Ethernet LAN (RJ-45) ports11
DisplayPorts quantityDiffers01
DVI portNoNo
VGA (D-Sub) ports quantity11
Firewire (IEEE 1394) portsDiffers01
Headphone outputs11
S/PDIF out portNoNo
Microphone inYesYes
Docking connectorDiffersNoYes
ExpressCard slotDiffersNoYes
CardBus PCMCIA slots quantity00
CardBus PCMCIA slot typeNoNo
SmartCard slotDiffersNoYes
Modem (RJ-11) portsKnown for one1
TV-outNoNo
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
eSATA/USB 2.0 ports quantityKnown for one0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one0
eSATA ports quantityKnown for one0
Thunderbolt ports quantityKnown for one0
Performanceidentical
Motherboard chipsetKnown for oneIntel® QM67 Express
Keyboard1 differ
Pointing deviceDiffersTouchpadThinkPad UltraNav
Full-size keyboardKnown for oneYes
Software1 differ
Operating system installedDiffersWindows 7 Home PremiumWindows 7 Professional
Operating system architecture64-bit64-bit
Drivers includedKnown for oneYes
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)Known for oneYes
Embedded options availableKnown for oneNo
Enhanced Intel SpeedStep TechnologyKnown for oneYes
Execute Disable BitKnown for oneYes
Graphics & IMC lithographyKnown for one32 nm
Idle StatesKnown for oneYes
Intel 64Known for oneYes
Intel Clear Video TechnologyKnown for oneNo
Intel Demand Based SwitchingKnown for oneNo
Intel Dual Display Capable TechnologyKnown for oneYes
Intel Enhanced Halt StateKnown for oneYes
Intel FDI TechnologyKnown for oneYes
Intel Fast Memory AccessKnown for oneYes
Intel Flex Memory AccessKnown for oneYes
Intel Identity Protection Technology versionKnown for one1.00
Intel Rapid Storage TechnologyKnown for oneNo
Intel Trusted Execution TechnologyKnown for oneNo
Intel VT-x with Extended Page Tables (EPT)Known for oneYes
Intel Virtualization Technology (VT-x)Known for oneYes
Intel Virtualization Technology for Directed I/O (VT-d)Known for oneNo
Intel® AES New Instructions (Intel® AES-NI)Known for oneNo
Intel® Anti-Theft Technology (Intel® AT)Known for oneYes
Intel® Clear Video HD Technology (Intel® CVT HD)Known for oneYes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for oneNo
Intel® Hyper Threading Technology (Intel® HT Technology)Known for oneYes
Intel® Identity Protection Technology (Intel® IPT)Known for oneYes
Intel® InTru™ 3D TechnologyKnown for oneYes
Intel® Insider™Known for oneNo
Intel® My WiFi Technology (Intel® MWT)Known for oneYes
Intel® Quick Sync Video TechnologyKnown for oneYes
Intel® Smart CacheKnown for oneYes
Intel® Turbo Boost TechnologyKnown for one2.0
Processor ARK IDKnown for one52224
Processor package sizeKnown for one37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction setsKnown for oneAVX
Thermal Monitoring TechnologiesKnown for oneYes
Conflict-Free processorKnown for oneNo
Battery1 differ
Number of battery cellsKnown for one6
Battery life (max)Differs6 h7.7 h
Poweridentical
DC-in jackYesYes
Security1 differ
Cable lock slotDiffersNoYes
Cable lock slot typeKnown for oneIBM
Fingerprint readerKnown for oneYes
Weight & dimensions5 differ
WeightDiffers2.6 kg2.51 kg
WidthDiffers377 mm372.8 mm
DepthDiffers250 mm245.1 mm
Height (front)Differs1.73 cm3.18 cm
Height (rear)Differs3.49 cm3.56 cm
Other featuresidentical
Infrared data portNoNo
Internal modemKnown for oneYes
Modem speedKnown for one56 Kbit/s
Intel segment taggingKnown for oneHome office, Small Business
Supplied AC adapter typeACAC
Packaging contentidentical
AC adapter includedKnown for oneYes

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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