Product comparison · 2 tablets

Acer Iconia W4-821 vs Lenovo 10 HD+

68specifications compared
27differ
41identical
67known for one product only

Key differences

Display diagonal
- Iconia W4-821:20.3 cm (8")
- 10 HD+:25.6 cm (10.1")
Display resolution
- Iconia W4-821:1280 x 800 pixels
- 10 HD+:1920 x 1200 pixels
Processor family
- Iconia W4-821:Intel Atom®
- 10 HD+:Snapdragon
Processor model
- Iconia W4-821:Z3740
- 10 HD+:APQ8028
Processor frequency
- Iconia W4-821:1.33 GHz
- 10 HD+:1.6 GHz
Processor cache
- Iconia W4-821:2 MB
- 10 HD+:1 MB
Internal memory type
- Iconia W4-821:LPDDR3-SDRAM
- 10 HD+:LPDDR2-SDRAM
Internal storage capacity
- Iconia W4-821:64 GB
- 10 HD+:16 GB

Side by side

Differences highlightedShow differences only

Comparison of W4-821, 10 HD+
135 specifications	A Acer Iconia W4-821 Model W4-821 View product	B Lenovo 10 HD+View product
Display2 differ
Display diagonalDiffers	20.3 cm (8")	25.6 cm (10.1")
Display resolutionDiffers	1280 x 800 pixels	1920 x 1200 pixels
Touchscreen typeKnown for one	Capacitive	Unknown — not stated by the source
Native aspect ratioKnown for one	Unknown — not stated by the source	16:9
Processor4 differ
Processor manufacturerKnown for one	Intel	Unknown — not stated by the source
Processor familyDiffers	Intel Atom®	Snapdragon
Processor modelDiffers	Z3740	APQ8028
Processor threadsKnown for one	4	Unknown — not stated by the source
Processor boost frequencyKnown for one	1.86 GHz	Unknown — not stated by the source
Processor frequencyDiffers	1.33 GHz	1.6 GHz
Processor cacheDiffers	2 MB	1 MB
Processor cache typeKnown for one	L2	Unknown — not stated by the source
Conflict-Free processorKnown for one	Yes	Unknown — not stated by the source
Graphics & IMC lithographyKnown for one	22 nm	Unknown — not stated by the source
Processor codeKnown for one	SR1M5	Unknown — not stated by the source
Processor codenameKnown for one	Bay Trail	Unknown — not stated by the source
Processor lithographyKnown for one	22 nm	Unknown — not stated by the source
Processor operating modesKnown for one	32-bit, 64-bit	Unknown — not stated by the source
Processor package sizeKnown for one	17 x 17 mm	Unknown — not stated by the source
Processor seriesKnown for one	Intel Atom Z3700 Series	Unknown — not stated by the source
Scenario Design Power (SDP)Known for one	2 W	Unknown — not stated by the source
SteppingKnown for one	B2	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	2 W	Unknown — not stated by the source
TjunctionKnown for one	90 °C	Unknown — not stated by the source
Memory1 differ
Internal memory typeDiffers	LPDDR3-SDRAM	LPDDR2-SDRAM
Maximum internal memoryKnown for one	2 GB	Unknown — not stated by the source
Memory clock speedKnown for one	Unknown — not stated by the source	800 MHz
Storage2 differ
Internal storage capacityDiffers	64 GB	16 GB
Compatible memory cardsDiffers	MicroSD (TransFlash), MicroSDHC, MicroSDXC	MicroSD (TransFlash)
Graphicsidentical
Graphics card familyKnown for one	Intel	Unknown — not stated by the source
Graphics cardKnown for one	HD Graphics	Unknown — not stated by the source
Camera1 differ
Maximum video resolutionKnown for one	1920 x 1080 pixels	Unknown — not stated by the source
Video recording modesKnown for one	1080p	Unknown — not stated by the source
Front camera resolution (numeric)Differs	2 MP	1.6 MP
Rear camera resolution (numeric)Known for one	Unknown — not stated by the source	8 MP
Auto focusKnown for one	Unknown — not stated by the source	Yes
Network1 differ
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	3G	Unknown — not stated by the source
3G standardsKnown for one	HSDPA, HSPA, HSPA+, HSUPA	Unknown — not stated by the source
Wi-Fi standardsDiffers	802.11a, 802.11b, 802.11g	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LANKnown for one	No	Unknown — not stated by the source
Ports & interfaces1 differ
Micro HDMI ports quantityKnown for one	1	Unknown — not stated by the source
Headphone connectivityKnown for one	3.5 mm	Unknown — not stated by the source
Combo headphone/mic portDiffers	No	Yes
DC-in jackKnown for one	No	Unknown — not stated by the source
Design1 differ
Product colourDiffers	Grey	Silver
Performanceidentical
Assisted GPS (A-GPS)Known for one	Yes	Unknown — not stated by the source
GLONASSKnown for one	Yes	Unknown — not stated by the source
Sensorsidentical
Ambient light sensorKnown for one	Yes	Unknown — not stated by the source
GyroscopeKnown for one	Yes	Unknown — not stated by the source
Orientation sensorKnown for one	Yes	Unknown — not stated by the source
Proximity sensorKnown for one	Yes	Unknown — not stated by the source
Securityidentical
Fingerprint readerKnown for one	No	Unknown — not stated by the source
Software2 differ
PlatformDiffers	Windows	Android
Operating system installedDiffers	Windows 8.1	Android
Operating system versionKnown for one	Unknown — not stated by the source	4.3
Processor special features3 differ
Embedded options availableKnown for one	No	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for one	No	Unknown — not stated by the source
Intel 64Known for one	Yes	Unknown — not stated by the source
Intel Identity Protection Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Secure Key Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for one	Yes	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for one	Yes	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Differs	Yes	No
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	Yes	Unknown — not stated by the source
Intel® Identity Protection Technology (Intel® IPT)Differs	Yes	No
Intel® Insider™Known for one	Yes	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel® Secure KeyKnown for one	Yes	Unknown — not stated by the source
Intel® Wireless Display (Intel® WiDi)Differs	Yes	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Unknown — not stated by the source	No
Intel® My WiFi Technology (Intel® MWT)Known for one	Unknown — not stated by the source	No
Battery4 differ
Battery technologyDiffers	Lithium Polymer (LiPo)	Lithium-Ion (Li-Ion)
Battery capacityDiffers	18.6 Wh	9000 mAh
Number of battery cellsDiffers	2	3
Battery life (max)Differs	8 h	18 h
Continuous video playback time (max)Known for one	8 h	Unknown — not stated by the source
Browsing time (Wi-Fi) (max)Known for one	10 h	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	10 W	Unknown — not stated by the source
AC adapter input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
AC adapter frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	218.9 mm	261 mm
DepthDiffers	134.9 mm	9.1 mm
HeightDiffers	10.8 mm	180 mm
WeightDiffers	415 g	626 g
Packaging content1 differ
Cables includedDiffers	AC	USB
Quick start guideKnown for one	Yes	Unknown — not stated by the source
ManualKnown for one	Unknown — not stated by the source	Yes
Warranty cardKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
2G standardsKnown for one	Edge, GPRS	Unknown — not stated by the source
Intel® Virtualization Technology (Intel® VT)Known for one	VT-x	Unknown — not stated by the source
Processor socketKnown for one	BGA 1380	Unknown — not stated by the source
Processor ARK IDKnown for one	76759	Unknown — not stated by the source
Total storage capacityKnown for one	Unknown — not stated by the source	16 GB

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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