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Breve Análise do Portátil Lenovo Flex 11 Chromebook

Utilitarismo de barebones… Um ponto verdadeiramente brilhante para os Chromebooks tem sido o setor educacional, onde sua adoção foi desproporcionalmente alta. Em reconhecimento a esta oportunidade, a Lenovo aproveita o momento com o que discutivelmente seria o seu portátil mais utilitário - ainda assim acessível - até à data, especificamente destinado aos estudantes.
Lenovo Flex 11 Chromebook
Processador
Mediatek MT8173C 4 x 2.1 GHz, Cortex-A72/-A53
Placa gráfica
PowerVR GX6250
Memória
4 GB 
, LPDDR3
Pantalha
11.60 polegadas 16:9, 1366 x 768 pixel 135 PPI, Multitouch de 10 pontos, IPS, Brilhante: sim
Disco rígido
32 GB eMMC Flash, 32 GB 
Conexões
2 USB 3.0, 1 HDMI, 1 Kensington Lock, Conexões Audio: 3,5 mm Audio-Kombo, Card Reader: SD/MMC
Funcionamento em rede
Wireless LAN 802.11 a/g/n/ac (a/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.2
Tamanho
altura x largura x profundidade (em mm): 21 x 299 x 208
Bateria
45 Wh Lítio-Polímero, 3-células, interna
Sistema Operativo
Google Chrome OS
Camera
Webcam: 720p HD Fixfokus
Primary Camera: 1 MPix
Características adicionais
Alto falantes: 2.0, Teclado: spritzwassergeschützter Chiclet-Typ, Iluminação do Teclado: não, 12 Meses Garantia, fanless, ruggedized
peso
1.35 kg, Suprimento de energia: 266 g
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

323 mm 225 mm 20 mm 1.4 kg326 mm 228 mm 15.5 mm 1.5 kg299 mm 208 mm 21 mm 1.4 kg276 mm 188 mm 27 mm 1.1 kg246 mm 173 mm 18.2 mm 1.1 kg297 mm 210 mm 1 mm 5.7 g
Front: no connections
Front: no connections
Rear: No connections
Rear: No connections
Left: USB Type-C (charging) port, HDMI, USB 3.0 Type-A (conventional) port, SD card reader
Left: USB Type-C (charging) port, HDMI, USB 3.0 Type-A (conventional) port, SD card reader
Right: Combo audio jack, volume rocker, power button, Kensington Lock port
Right: Combo audio jack, volume rocker, power button, Kensington Lock port
SD Card Reader - average JPG Copy Test (av. of 3 runs)
Lenovo ThinkPad 13 Chromebook
 
50.9 MB/s +536%
Lenovo IdeaPad MIIX 310-10ICR
 
41.21 MB/s +415%
Lenovo Flex 11 Chromebook
 
8 MB/s
254.9
cd/m²
243.8
cd/m²
234.6
cd/m²
263.9
cd/m²
275.1
cd/m²
244.2
cd/m²
261.7
cd/m²
273.7
cd/m²
241.1
cd/m²
Distribuição do brilho
tested with X-Rite i1Pro Basic 2
Máximo: 275.1 cd/m² (Nits) Médio: 254.8 cd/m²
iluminação: 85 %
iluminação com acumulador: 275.1 cd/m²
Contraste: 887:1 (Preto: 0.31 cd/m²)
ΔE Color 5.2 | 0.5-29.43 Ø5
ΔE Greyscale 2.8 | 0.57-98 Ø5.3
Gamma: 2.28
Lenovo Flex 11 Chromebook
IPS, 11.60, 1366x768
Asus Transformer Book T100HA-C4-GR
AUO20D4, IPS, 10.10, 1280x800
Lenovo ThinkPad 13 Chromebook
IPS, 13.30, 1920x1080
Acer Chromebook R13 CB5-312T-K0YK
IPS, 13.30, 1920x1080
Lenovo IdeaPad MIIX 310-10ICR
IPS, 10.10, 1280x800
Display
Display P3 Coverage
52.8
51.1
sRGB Coverage
73
75.2
AdobeRGB 1998 Coverage
53.3
52.7
Response Times
-21%
3%
-28%
Response Time Grey 50% / Grey 80% *
33.6 ?(18.8, 14.8)
37.6 ?(15.2, 22.4)
-12%
38 ?(14, 24)
-13%
31.6 ?(13.6, 18)
6%
Response Time Black / White *
28 ?(16.4, 11.6)
36 ?(5.2, 30.8)
-29%
23 ?(5, 18)
18%
24.8 ?(6, 28.8)
11%
PWM Frequency
20830 ?(99)
69.4
-100%
Screen
36%
-15%
-12%
-22%
Brightness middle
275.1
480.2
75%
262.9
-4%
192
-30%
251.9
-8%
Brightness
255
455
78%
261
2%
204
-20%
233
-9%
Brightness Distribution
85
85
0%
92
8%
88
4%
83
-2%
Black Level *
0.31
0.324
-5%
0.601
-94%
0.23
26%
0.348
-12%
Contrast
887
1482
67%
437
-51%
835
-6%
724
-18%
Colorchecker dE 2000 *
5.2
3.45
34%
4.87
6%
6.35
-22%
Colorchecker dE 2000 max. *
20.3
12.18
40%
11.15
45%
Greyscale dE 2000 *
2.8
2.67
5%
3.51
-25%
3.99
-43%
7.09
-153%
Gamma
2.28 96%
2.34 94%
2.17 101%
2.45 90%
2.02 109%
CCT
6861 95%
6164 105%
6476 100%
6380 102%
8590 76%
Color Space (Percent of AdobeRGB 1998)
47.28
52.69
Color Space (Percent of sRGB)
84.38
Total Average (Program / Settings)
36% / 36%
-18% / -16%
-5% / -8%
-25% / -24%

* ... smaller is better

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
28 ms ... rise ↗ and fall ↘ combined↗ 16.4 ms rise
↘ 11.6 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 67 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (21.6 ms).
       Response Time 50% Grey to 80% Grey
33.6 ms ... rise ↗ and fall ↘ combined↗ 18.8 ms rise
↘ 14.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 39 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (33.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 20830 Hz ≤ 99 % brightness setting

The display backlight flickers at 20830 Hz (worst case, e.g., utilizing PWM) Flickering detected at a brightness setting of 99 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 20830 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 18080 (minimum: 5 - maximum: 3846000) Hz was measured.

Sunspider - 1.0 Total Score (sort by value)
Lenovo Flex 11 Chromebook
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
590 ms *
Asus Transformer Book T100HA-C4-GR
HD Graphics (Cherry Trail), Z8500, Samsung CGND3R eMMC
399.8 ms * +32%
Lenovo ThinkPad 13 Chromebook
HD Graphics 520, 6300U, 32 GB eMMC Flash
213 ms * +64%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
578 ms * +2%
JetStream 1.1 - Total Score (sort by value)
Lenovo Flex 11 Chromebook
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
57.1 Points
Lenovo ThinkPad 13 Chromebook
HD Graphics 520, 6300U, 32 GB eMMC Flash
173.3 Points +204%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
57 Points 0%
Mozilla Kraken 1.1 - Total (sort by value)
Lenovo Flex 11 Chromebook
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
2976 ms *
Asus Transformer Book T100HA-C4-GR
HD Graphics (Cherry Trail), Z8500, Samsung CGND3R eMMC
5142 ms * -73%
Lenovo ThinkPad 13 Chromebook
HD Graphics 520, 6300U, 32 GB eMMC Flash
1007 ms * +66%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
3297 ms * -11%
Lenovo IdeaPad MIIX 310-10ICR
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
6122 ms * -106%
Octane V2 - Total Score (sort by value)
Lenovo Flex 11 Chromebook
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
10319 Points
Lenovo ThinkPad 13 Chromebook
HD Graphics 520, 6300U, 32 GB eMMC Flash
29435 Points +185%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
10139 Points -2%
Lenovo IdeaPad MIIX 310-10ICR
HD Graphics (Cherry Trail), Z8350, 64 GB eMMC Flash
6343 Points -39%
WebXPRT 2015 - Overall (sort by value)
Lenovo Flex 11 Chromebook
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
142 Points
Lenovo ThinkPad 13 Chromebook
HD Graphics 520, 6300U, 32 GB eMMC Flash
359 Points +153%
Acer Chromebook R13 CB5-312T-K0YK
PowerVR GX6250, MT8173C, 32 GB eMMC Flash
138 Points -3%

* ... smaller is better

Carga Máxima
 33 °C32 °C29.8 °C 
 32.2 °C31.6 °C29.4 °C 
 27.2 °C28 °C28.4 °C 
Máximo: 33 °C
Médio: 30.2 °C
30 °C33.8 °C36 °C
29.6 °C33.6 °C33.4 °C
27.6 °C28.4 °C27.8 °C
Máximo: 36 °C
Médio: 31.1 °C
alimentação elétrica  30 °C | Temperatura do quarto 20 °C | Fluke 62 Mini IR Thermometer
(+) The average temperature for the upper side under maximal load is 30.2 °C / 86 F, compared to the average of 30.7 °C / 87 F for the devices in the class Subnotebook.
(+) The maximum temperature on the upper side is 33 °C / 91 F, compared to the average of 35.9 °C / 97 F, ranging from 21.4 to 59 °C for the class Subnotebook.
(+) The bottom heats up to a maximum of 36 °C / 97 F, compared to the average of 39.4 °C / 103 F
(+) In idle usage, the average temperature for the upper side is 23.2 °C / 74 F, compared to the device average of 30.7 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 28.4 °C / 83.1 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 28.3 °C / 82.9 F (-0.1 °C / -0.2 F).
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2035.539.535.52536.135.236.13133.434.233.44035.631.635.65032.63232.66331.834.331.88031.532.231.510030.431.530.412529.728.429.716029.526.929.52003227.23225043.326.443.331557.525.757.540066.12566.150068.824.668.863067.823.767.880071.423.871.4100073.223.173.2125075.82375.8160071.322.771.3200066.122.666.1250068.522.268.5315071.122.171.1400065.82265.8500069.622.269.6630074.32274.3800071.62271.61000062.422.162.41250063.222.163.21600065.922.265.9SPL833583N56.72.456.7median 66.1median 23median 66.1Delta10.11.910.142.735.842.73933.33939.532.639.540.631.340.641.829.941.844.131.144.144.328.244.34528.34545.625.345.647.525.647.551.224.951.254.323.554.359.522.959.560.421.860.463.120.963.16619.96672.719.372.771.318.971.363.218.263.261.918.261.963.117.863.165.317.665.366.417.666.467.317.667.370.517.670.563.817.863.865.917.865.964.717.764.764.617.564.665.117.765.179.130.879.146.11.546.1median 63.8median 18.2median 63.842.44hearing rangehide median Pink NoiseLenovo Flex 11 ChromebookAcer Chromebook R13 CB5-312T-K0YK
Lenovo Flex 11 Chromebook audio analysis

(+) | speakers can play relatively loud (83 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 29.1% lower than median
(±) | linearity of bass is average (11.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.9% away from median
(±) | linearity of mids is average (8.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 4.1% away from median
(±) | linearity of highs is average (10.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (24.5% difference to median)
Compared to same class
» 79% of all tested devices in this class were better, 5% similar, 16% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 70% of all tested devices were better, 6% similar, 24% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Acer Chromebook R13 CB5-312T-K0YK audio analysis

(±) | speaker loudness is average but good (73 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 13.2% lower than median
(+) | bass is linear (5.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.2% away from median
(+) | mids are linear (6.9% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.5% away from median
(+) | highs are linear (5.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (13.9% difference to median)
Compared to same class
» 0% of all tested devices in this class were better, 14% similar, 86% worse
» The best had a delta of 14%, average was 25%, worst was 35%
Compared to all devices tested
» 12% of all tested devices were better, 3% similar, 84% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Consumo de energia
desligadodarklight 0.3 / 1.3 Watt
Ociosodarkmidlight 1.5 / 5.4 / 5.5 Watt
Carga midlight 6.3 / 7.9 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.
Lenovo Flex 11 Chromebook
MT8173C, PowerVR GX6250, 32 GB eMMC Flash, IPS, 1366x768, 11.60
Lenovo ThinkPad 13 Chromebook
6300U, HD Graphics 520, 32 GB eMMC Flash, IPS, 1920x1080, 13.30
Acer Chromebook R13 CB5-312T-K0YK
MT8173C, PowerVR GX6250, 32 GB eMMC Flash, IPS, 1920x1080, 13.30
Lenovo IdeaPad MIIX 310-10ICR
Z8350, HD Graphics (Cherry Trail), 64 GB eMMC Flash, IPS, 1280x800, 10.10
Power Consumption
-11%
-65%
-102%
Idle Minimum *
1.5
0.77
49%
3.8
-153%
5.14
-243%
Idle Average *
5.4
5.11
5%
6.2
-15%
7.6
-41%
Idle Maximum *
5.5
5.88
-7%
6.6
-20%
8.28
-51%
Load Average *
6.3
7.43
-18%
11
-75%
11.33
-80%
Load Maximum *
7.9
14.73
-86%
12.7
-61%
15.36
-94%

* ... smaller is better

Tempo de Execução da Bateria
WiFi Websurfing
12h 44min
Lenovo Flex 11 Chromebook
MT8173C, PowerVR GX6250, 45 Wh
Asus Transformer Book T100HA-C4-GR
Z8500, HD Graphics (Cherry Trail), 30 Wh
Lenovo ThinkPad 13 Chromebook
6300U, HD Graphics 520, 42 Wh
Acer Chromebook R13 CB5-312T-K0YK
MT8173C, PowerVR GX6250, 53.9 Wh
Lenovo IdeaPad MIIX 310-10ICR
Z8350, HD Graphics (Cherry Trail), 33 Wh
Battery Runtime
-29%
-30%
1%
-16%
WiFi v1.3
764
541
-29%
536
-30%
773
1%
643
-16%
Reader / Idle
1460
1249
Load
246
170

Pro

+ Extremamente acessível
+ Relativamente durável, apesar da carcaça de plástico
+ Design resistente a respingos
+ Longa duração da bateria
+ Tela táctil IPS
+ Silencioso

Contra

- O teclado é superficial com um senso ambíguo de feedback
- Os botões integrados do touchpad estão abaixo dos padrões
- Massivo e pesado para uma máquina de 11,6 polegadas
- Seleção limitada de portas
- Pouco atraente
- O Chrome OS continua limitado em comparação com seus rivais
In review: Lenovo Flex 11 Chromebook. Test model provided by Lenovo US
In review: Lenovo Flex 11 Chromebook. Test model provided by Lenovo US

A Lenovo tirou as luvas na luta pelo mercado educacional com a introdução do Chromebook Flex 11. Sob seu preço ultra acessível de $279, estão quase todas as principais características esperadas de um concorrente para essa coroa sedutora. É construído a partir de um plástico ABS/policarbonato barato (e absolutamente não elegante) que promete de durabilidade e está envolvido com um para-choques de borracha que o ajuda a resistir ao dano causado por pequenas gotas. Tem um teclado antideslizante e touchpad com um design especial para canalizar água longe dos equipamentos internos do dispositivo. É relativamente rápido graças aos requisitos leves do Chrome OS, mas gerencia simultaneamente longas durações da bateria graças à eficiência do grandePEQUENO SoC e sua grande bateria. Além disso, a tela é realmente bastante decente (apesar de sua resolução lamentável) e também é táctil.

O Chromebook Flex 11 não lança nenhum soco na sua tentativa de assumir o mercado educacional, cobrindo quase todas as bases: desempenho ágil e confiável, construção durável, longas durações de bateria e um preço acessível. No entanto, seus dispositivos de entrada e conectividade deixam muito a desejar, e sua aparência não é o seu forte.

É claro que com menos de $300, inevitavelmente ainda há compromissos sérios em jogo. Para começar- e sabemos que você está ficando cansado de ouvir isso, mas deve ser apontado - o Chrome OS está longe de ser o sistema operacional altamente compatível e altamente capaz que o Windows é. O suporte para aplicativos Android está quase aqui, mas mesmo considerando isso, este não é um PC completo. Além disso, os dispositivos de entrada são medíocres na melhor das hipóteses, com o teclado com deslocamentos curtos e resposta inarticulada, e os botões integrados do touchpad, perto do final da lista dos que avaliamos recentemente. É também uma máquina bastante pesada e volumosa para o seu tamanho de tela de 11,6 polegadas, mas supomos que a maioria das crianças poderia viver com essa limitação. Finalmente, a conectividade é incrivelmente básica, com apenas duas portas USB (uma das quais - a porta Type-C - também funciona como a porta de carregamento) e uma porta HDMI para conexões de acessórios e vídeo.

Em geral, no contexto do seu preço, o Flex 11 é uma recomendação fácil para quem pode lidar com a pequena lista de inconvenientes. Não há nada extravagante nem impressionante sobre isso, mas é difícil de zombar do pacote total, dado o valor do dinheiro.

Lenovo Flex 11 Chromebook - 06/26/2017 v6(old)
Steve Schardein

Acabamento
61 /  98 → 62%
Teclado
64%
Mouse
80%
Conectividade
39 / 80 → 49%
Peso
71 / 35-78 → 84%
Bateria
96%
Pantalha
80%
Desempenho do jogos
0 / 68 → 0%
Desempenho da aplicação
59 / 87 → 68%
Temperatura
95 / 91 → 100%
Ruído
100%
Audio
60 / 91 → 66%
Camera
60 / 85 → 71%
Médio
72%
80%
Subnotebook - Médio equilibrado

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> Análises e revisões de portáteis e celulares > Análises > Análises > Breve Análise do Portátil Lenovo Flex 11 Chromebook
Steve Schardein, 2017-07- 4 (Update: 2017-07- 7)