Breve Análise do Tablet Amazon Fire HD 8 (2018)
| Networking | |
| iperf3 transmit AX12 | |
| Xiaomi Mi Pad 4 | |
| Huawei MediaPad M5 8.4 | |
| Amazon Fire HD 8 2018 | |
| Amazon Fire HD 8 2017 | |
| iperf3 receive AX12 | |
| Xiaomi Mi Pad 4 | |
| Huawei MediaPad M5 8.4 | |
| Amazon Fire HD 8 2018 | |
| Amazon Fire HD 8 2017 | |
| |||||||||||||||||||||||||
iluminação: 89 %
iluminação com acumulador: 359 cd/m²
Contraste: 422:1 (Preto: 0.85 cd/m²)
ΔE Color 6.8 | 0.5-29.43 Ø4.91
ΔE Greyscale 7.6 | 0.5-98 Ø5.2
78.3% sRGB (Calman 2D)
Gamma: 2.19
| Amazon Fire HD 8 2018 IPS, 1280x800, 8" | Amazon Fire HD 8 2017 IPS, 1280x800, 8" | Huawei MediaPad M5 8.4 IPS, 2560x1600, 8.4" | Lenovo Tab 4 8 IPS, 1280x800, 8" | Samsung Galaxy Tab Active 2 TFT LCD, 1280x800, 8" | Xiaomi Mi Pad 4 IPS LCD, 1920x1200, 8" | |
|---|---|---|---|---|---|---|
| Screen | 25% | 19% | 33% | 54% | 26% | |
| Brightness middle | 359 | 419 17% | 405 13% | 455 27% | 509 42% | 454 26% |
| Brightness | 358 | 412 15% | 392 9% | 446 25% | 477 33% | 411 15% |
| Brightness Distribution | 89 | 91 2% | 92 3% | 91 2% | 91 2% | 83 -7% |
| Black Level * | 0.85 | 0.39 54% | 0.67 21% | 0.51 40% | 0.48 44% | 0.73 14% |
| Contrast | 422 | 1074 155% | 604 43% | 892 111% | 1060 151% | 622 47% |
| Colorchecker dE 2000 * | 6.8 | 8.5 -25% | 5.78 15% | 5.5 19% | 3.45 49% | 5.2 24% |
| Colorchecker dE 2000 max. * | 17.3 | 13.8 20% | 9.82 43% | 14.8 14% | 5.17 70% | 8.36 52% |
| Greyscale dE 2000 * | 7.6 | 10.3 -36% | 7.2 5% | 5.5 28% | 4.5 41% | 4.7 38% |
| Gamma | 2.19 100% | 2.6 85% | 2.278 97% | 2.23 99% | 2.11 104% | 2.271 97% |
| CCT | 7160 91% | 6216 105% | 8405 77% | 7852 83% | 7171 91% | 7361 88% |
* ... smaller is better
Screen Flickering / PWM (Pulse-Width Modulation)
| Screen flickering / PWM not detected |  | ||
In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8705 (minimum: 5 - maximum: 343500) Hz was measured. | |||
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 38 ms ... rise ↗ and fall ↘ combined | ↗ 20.8 ms rise |  |
| ↘ 17.2 ms fall | ||
| The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 95 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (20.9 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 48 ms ... rise ↗ and fall ↘ combined | ↗ 26.8 ms rise |  |
| ↘ 21.2 ms fall | ||
| The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 81 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (32.8 ms). | ||
| GFXBench | |
| on screen Car Chase Onscreen | |
| Average of class Tablet (3.1 - 117.9, n=66, last 2 years) | |
| Huawei MediaPad M5 8.4 | |
| Xiaomi Mi Pad 4 | |
| Samsung Galaxy Tab Active 2 | |
| Amazon Fire HD 8 2018 | |
| 1920x1080 Car Chase Offscreen | |
| Average of class Tablet (2.2 - 284, n=66, last 2 years) | |
| Huawei MediaPad M5 8.4 | |
| Xiaomi Mi Pad 4 | |
| Samsung Galaxy Tab Active 2 | |
| Amazon Fire HD 8 2018 | |
| AnTuTu v7 - Total Score | |
| Huawei MediaPad M5 8.4 | |
| Xiaomi Mi Pad 4 | |
| Amazon Fire HD 8 2018 | |
| Average MediaTek MT8163 V/B 1.3 GHz () | |
| JetStream 1.1 - Total Score | |
| Huawei MediaPad M5 8.4 (Chrome 66) | |
| Xiaomi Mi Pad 4 (Chrome 68) | |
| Samsung Galaxy Tab Active 2 | |
| Amazon Fire HD 8 2017 (Amazon Silk 58.2.3029.83.10) | |
| Lenovo Tab 4 8 (Chrome 61) | |
| Average MediaTek MT8163 V/B 1.3 GHz (13.3 - 21.2, n=6) | |
| Amazon Fire HD 8 2018 (Silk Browser 66.2.10.3359.126.10) | |
| Octane V2 - Total Score | |
| Average of class Tablet (763 - 105178, n=85, last 2 years) | |
| Huawei MediaPad M5 8.4 (Chrome 66) | |
| Xiaomi Mi Pad 4 (Chrome 68) | |
| Samsung Galaxy Tab Active 2 | |
| Average MediaTek MT8163 V/B 1.3 GHz (2821 - 3320, n=6) | |
| Lenovo Tab 4 8 (Chrome 61) | |
| Amazon Fire HD 8 2018 (Silk Browser 66.2.10.3359.126.10) | |
| Amazon Fire HD 8 2017 (Amazon Silk 58.2.3029.83.10) | |
| Mozilla Kraken 1.1 - Total | |
| Amazon Fire HD 8 2018 (Silk Browser 66.2.10.3359.126.10) | |
| Average MediaTek MT8163 V/B 1.3 GHz (11818 - 14321, n=6) | |
| Lenovo Tab 4 8 (Chrome 61) | |
| Amazon Fire HD 8 2017 (Amazon Silk 58.2.3029.83.10) | |
| Samsung Galaxy Tab Active 2 | |
| Xiaomi Mi Pad 4 (Chrome 68) | |
| Average of class Tablet (319 - 34733, n=73, last 2 years) | |
| Huawei MediaPad M5 8.4 (Chrome 66) | |
| WebXPRT 3 - Overall | |
| Average of class Tablet (34 - 435, n=44, last 2 years) | |
| Huawei MediaPad M5 8.4 (Chrome 66) | |
| Amazon Fire HD 8 2018 (Silk Browser 66.2.10.3359.126.10) | |
| Average MediaTek MT8163 V/B 1.3 GHz (23 - 25, n=3) | |
| WebXPRT 2015 - Overall | |
| Huawei MediaPad M5 8.4 (Chrome 66) | |
| Xiaomi Mi Pad 4 (Chrome 68) | |
| Amazon Fire HD 8 2018 (Silk Browser 66.2.10.3359.126.10) | |
| Lenovo Tab 4 8 (Chrome 61) | |
| Samsung Galaxy Tab Active 2 | |
| Average MediaTek MT8163 V/B 1.3 GHz (57 - 71, n=4) | |
| Amazon Fire HD 8 2017 (Amazon Silk 58.2.3029.83.10) | |
* ... smaller is better
| Amazon Fire HD 8 2018 | Amazon Fire HD 8 2017 | Huawei MediaPad M5 8.4 | Lenovo Tab 4 8 | Samsung Galaxy Tab Active 2 | Xiaomi Mi Pad 4 | Average 16 GB eMMC Flash | Average of class Tablet | |
|---|---|---|---|---|---|---|---|---|
| AndroBench 3-5 | -2% | 170% | 51% | 33% | 233% | -3% | 1047% | |
| Sequential Read 256KB | 158.5 | 159.1 0% | 268.6 69% | 265.1 67% | 218.1 38% | 277.6 75% | 164.5 ? 4% | 1055 ? 566% |
| Sequential Write 256KB | 41.89 | 47.23 13% | 132.2 216% | 72.3 73% | 54 29% | 207.9 396% | 43 ? 3% | 692 ? 1552% |
| Random Read 4KB | 26.98 | 21.55 -20% | 62.8 133% | 44 63% | 25.96 -4% | 94.2 249% | 21.7 ? -20% | 191 ? 608% |
| Random Write 4KB | 12.25 | 11.51 -6% | 65.1 431% | 7.1 -42% | 10.98 -10% | 77.9 536% | 8.08 ? -34% | 191.4 ? 1462% |
| Sequential Read 256KB SDCard | 51.4 ? | 51.1 -1% | 84.9 ? 65% | 84.8 65% | 78.6 53% | 84.2 ? 64% | 59.1 ? 15% | |
| Sequential Write 256KB SDCard | 34.03 ? | 34.15 0% | 70.7 ? 108% | 61.1 80% | 64.3 89% | 61.2 ? 80% | 39.8 ? 17% |
Dead Trigger 2
Asphalt 9
(+) The maximum temperature on the upper side is 31.4 °C / 89 F, compared to the average of 33.7 °C / 93 F, ranging from 20.7 to 53.2 °C for the class Tablet.
(+) The bottom heats up to a maximum of 34.2 °C / 94 F, compared to the average of 33.2 °C / 92 F
(+) In idle usage, the average temperature for the upper side is 21.9 °C / 71 F, compared to the device average of 30 °C / 86 F.
Amazon Fire HD 8 2018 audio analysis
(±) | speaker loudness is average but good (76.3 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 17.4% lower than median
(±) | linearity of bass is average (9.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.7% away from median
(+) | mids are linear (4.4% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.2% higher than median
(+) | highs are linear (3.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (19.1% difference to median)
Compared to same class
» 48% of all tested devices in this class were better, 6% similar, 47% worse
» The best had a delta of 7%, average was 22%, worst was 129%
Compared to all devices tested
» 42% of all tested devices were better, 7% similar, 51% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Huawei MediaPad M5 8.4 audio analysis
(+) | speakers can play relatively loud (85 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 19.2% lower than median
(±) | linearity of bass is average (12.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.6% away from median
(+) | mids are linear (2.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 4.2% away from median
(+) | highs are linear (3.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.9% difference to median)
Compared to same class
» 30% of all tested devices in this class were better, 6% similar, 63% worse
» The best had a delta of 7%, average was 22%, worst was 129%
Compared to all devices tested
» 22% of all tested devices were better, 5% similar, 73% worse
» The best had a delta of 4%, average was 25%, worst was 134%
| desligado |   0.01 / 0.35 Watt |
| Ocioso |  0.97 / 3.26 / 3.37 Watt |
| Carga |
5.68 / 6.21 Watt |
    
| |
Key:
min: ,
med: ,
max: Metrahit Energy | |
| Amazon Fire HD 8 2018 4750 mAh | Amazon Fire HD 8 2017 mAh | Huawei MediaPad M5 8.4 5100 mAh | Lenovo Tab 4 8 4850 mAh | Samsung Galaxy Tab Active 2 4450 mAh | Xiaomi Mi Pad 4 6000 mAh | |
|---|---|---|---|---|---|---|
| Power Consumption | 12% | -43% | -6% | 11% | -31% | |
| Idle Minimum * | 0.97 | 0.99 -2% | 2.1 -116% | 1.1 -13% | 0.89 8% | 1.2 -24% |
| Idle Average * | 3.26 | 2.74 16% | 3.74 -15% | 3.51 -8% | 3.13 4% | 2.2 33% |
| Idle Maximum * | 3.37 | 2.83 16% | 4.33 -28% | 4.14 -23% | 3.36 -0% | 4.1 -22% |
| Load Average * | 5.68 | 4.51 21% | 6.32 -11% | 4.86 14% | 3.93 31% | 8.2 -44% |
| Load Maximum * | 6.21 | 5.69 8% | 9.13 -47% | 6.13 1% | 5.45 12% | 12.2 -96% |
* ... smaller is better
| Amazon Fire HD 8 2018 4750 mAh | Amazon Fire HD 8 2017 mAh | Huawei MediaPad M5 8.4 5100 mAh | Lenovo Tab 4 8 4850 mAh | Samsung Galaxy Tab Active 2 4450 mAh | Xiaomi Mi Pad 4 6000 mAh | |
|---|---|---|---|---|---|---|
| Battery Runtime | 51% | 16% | 1% | 31% | 35% | |
| Reader / Idle | 1168 | 2032 74% | 1154 -1% | 1207 3% | 1357 16% | 1364 17% |
| H.264 | 498 | 744 49% | 701 41% | 603 21% | 493 -1% | 914 84% |
| WiFi v1.3 | 490 | 770 57% | 627 28% | 452 -8% | 895 83% | 827 69% |
| Load | 316 | 393 24% | 298 -6% | 276 -13% | 396 25% | 221 -30% |
Pro
Contra
O Fire HD 8 (2018) da Amazon é um tablet de 8 polegadas que é praticamente inigualável em sua relação preço/desempenho. Se você está procurando um tablet acessível para navegar na web, definitivamente vale a pena considerar o Fire HD 8 (2018). Seu som estéreo era muito decente, assim como sua duração de bateria, sua qualidade geral de construção e seu Wi-Fi de banda dupla. A edição Kids apresenta um escudo protetor muito sólido e robusto em azul ou rosa, bem como conteúdo apropriado para crianças.
As diferenças entre o Fire HD 8 (2018) e seu antecessor, como a inclusão do Alexa, são quase insignificantes. No entanto, elas são muito bem-vindas e tornam o modelo mais novo ainda mais atraente do que o Fire HD 8 (2017), considerando seu preço idêntico de apenas $80.
Quando emparelhado com a estação de encaixe Show Mode opcional, o tablet oferecia os mesmos recursos do Echo Show da Amazon a um preço significativamente menor. No momento da escrita, o Echo Show de segunda geração é vendido por mais de $200, enquanto o modelo de 32 GB do pacote Fire HD 8 (2018) mais Show Mode Dock pode ser adquirido por apenas $140.
Dito isto, há algumas limitações que você vai encontrar mais cedo ou mais tarde, por exemplo, o um pouco letárgico MediaTek MT8163 SoC quad-core ou a tela escura de baixa resolução (1280x800). O tablet também não possui um chip GPS, a câmera é utilizável para fotos rápidas na melhor das hipóteses, e o sistema operacional Fire OS baseado no Android 7 é claramente voltado para os serviços da Amazon. A Play Store da Google pode ser instalada retroativamente, mas anulará sua garantia, portanto, cuidado.
Amazon Fire HD 8 2018
- 11/05/2019 v7 (old)
Manuel Masiero
Price comparison
