| Global Score | |
| 68.5 | 58.4 |
| Basic Information | |
| Amazon | Microsoft |
| Android 4.2.2 | Windows RT |
| 2013-09-25 | 2012-06-18 |
| 9.09 x 6.22 x 0.31 inches | 10.81 x 6.77 x 0.37 inches |
| 13.55 ounces | 24.00 ounces |
| Black | -- |
| -- | Scratch-Resistant Glass |
| -- | $ 123.00 |
| Display / Screen | |
| 8.9 inches | 10.6 inches |
| 2560 x 1600 pixels | 1366 x 768 pixels |
| LCD | -- |
| 339 pixels per inch | 148 pixels per inch |
| 400 cd/m2 brightness | -- |
| Capacitive, Multi-touch | Capacitive, Multi-touch |
| 9 | 6.6 |
| Performance | |
| Qualcomm Snapdragon 800 MSM8074 chipset | NVIDIA Tegra 3 T30 chipset |
| Krait 400 (Quad-Core 2200 MHz) processor | ARM Cortex-A9 (Quad-Core 1300 MHz) processor |
| 2 GB (800 MHz) RAM | 2 GB (1500 MHz) RAM |
| Adreno 330 (450 MHz) GPU | ULP GeForce (520 MHz) GPU |
| 9.18 | 8.64 |
| 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 | 1.00 MP |
| f/2.20 aperture | -- |
| -- | 1920 x 1080 (Full HD) video resolution |
| 6.82 | 4.29 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | -- |
| LTE (4G), HSPA, UMTS, EDGE and GPRS | -- |
| 6.4 | 2.4 |
| Non-Removable Battery | Non-Removable Battery |
| 1.36 | 1.36 |
| Other Features | |
| Bluetooth | Bluetooth 4.0 |
| GPS | -- |
| Accelerometer, Gyroscope and Light Sensor | Accelerometer, Compass, Gyroscope and Light Sensor |
Amazon Kindle Fire HDX 8.9 is much better than the Microsoft Surface RT, having a general score of 68.5 against 58.4. Amazon Kindle Fire HDX 8.9's construction is newer, somewhat thinner and lighter than Microsoft Surface RT. The Amazon Kindle Fire HDX 8.9 has Android 4.2.2 OS, and Microsoft Surface RT works with Windows RT OS.
The Amazon Kindle Fire HDX 8.9 features just a little better hardware performance than Microsoft Surface RT, although it has a weaker graphics processor running at 450 MHz, they both have 2 GB of RAM memory and 4 CPU cores. The Amazon Kindle Fire HDX 8.9 has a way better display than Microsoft Surface RT, because although it has a bit smaller screen, it also counts with a much higher resolution of 1600 x 2560 and much more pixels per display inch.
The Microsoft Surface RT's memory capacity to store more apps and games is very similar to Amazon Kindle Fire HDX 8.9's one, they have equal internal memory capacity. The Amazon Kindle Fire HDX 8.9 counts with a way better camera than Microsoft Surface RT, because it has a camera with a way better resolution.
The Microsoft Surface RT counts with a battery lifetime that is just as good as the Amazon Kindle Fire HDX 8.9 one.
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