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| Global Score | |
| 68.5 | 59.3 |
| Basic Information | |
| Amazon | Acer |
| Android 4.2.2 | Windows 8.1 |
| 2013-09-25 | 0000-00-00 |
| 9.09 x 6.22 x 0.31 inches | 8.58 x 5.31 x 0.39 inches |
| 13.55 ounces | 15.17 ounces |
| Black | Gray |
| -- | $ 385.00 |
| Display / Screen | |
| 8.9 inches | 8 inches |
| 2560 x 1600 pixels | 1280 x 800 pixels |
| LCD | IPS LCD |
| 339 pixels per inch | 189 pixels per inch |
| 400 cd/m2 brightness | -- |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 9 | 7.4 |
| Performance | |
| Qualcomm Snapdragon 800 MSM8074 chipset | Intel Atom Bay Trail chipset |
| Krait 400 (Quad-Core 2200 MHz) processor | Intel Atom Z3740 (Quad-Core 1333 MHz) processor |
| 2 GB (800 MHz) RAM | 2 GB RAM |
| Adreno 330 (450 MHz) GPU | Intel Graphics Media Accelerator HD GPU |
| 9.18 | 8.28 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| No SD card slot | microSD, microSDHC, microSDXC external memory slot |
| 7.7 | 7.7 |
| Camera | |
| 8.00 MP | 5.00 MP + 2.00 MP |
| f/2.20 aperture | -- |
| -- | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 6.82 | 7.04 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | -- |
| LTE (4G), HSPA, UMTS, EDGE and GPRS | -- |
| 6.4 | 2.4 |
| Battery Life | |
| -- | 4960mAh Li-Polymer Battery |
| Non-Removable Battery | Removable Battery |
| 1.36 | 6.72 |
| Other Features | |
| Bluetooth | Bluetooth 4.0 |
| GPS | GPS |
| Accelerometer, Gyroscope and Light Sensor | Accelerometer |
Amazon Kindle Fire HDX 8.9 is much better than the Acer Iconia W4, with a 68.5 score against 59.3. Amazon Kindle Fire HDX 8.9 comes with Android 4.2.2 operating system, and Acer Iconia W4 works with Windows 8.1 operating system. Amazon Kindle Fire HDX 8.9 is a way thinner and somewhat lighter tablet than the Acer Iconia W4.
The Amazon Kindle Fire HDX 8.9 has an incredibly better looking screen than Acer Iconia W4, because it has a little larger screen, a lot better resolution of 1600 x 2560 and a lot higher display pixel density. The Acer Iconia W4's memory to store more apps and games is just as good as the Amazon Kindle Fire HDX 8.9 one, they have equal 64 GB internal storage capacity.
Amazon Kindle Fire HDX 8.9 counts with a more powerful processing unit than Acer Iconia W4, and although they both have a 2 GB RAM and 4 cpu cores, the Amazon Kindle Fire HDX 8.9 also has an extra graphics processor. Acer Iconia W4 counts with a bit better camera than Amazon Kindle Fire HDX 8.9, although it has a camera with lot less MP resolution.
Acer Iconia W4 counts with a much longer battery lifetime than Amazon Kindle Fire HDX 8.9.
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