Test results Samsung Galaxy Tab S 8.4
Expert evaluations
Materials
Dimensions and weight
Ports and interfaces
Performance
Display
Battery
Cameras
Temperature
Memory
Samsung is gaining momentum in the manufacture of tablets: the existing Samsung Galaxy Note, Samsung Galaxy Tab 1/2/3/4 and Samsung Galaxy Tab Pro now add a couple of tablets Samsung Galaxy Tab S 10.5 and Samsung Galaxy Tab S 8.4. At first glance, it is very similar to the Samsung Galaxy Tab 8.4 Pro , but there are a few differences: the use of Super AMOLED display technology, a thin and lightweight body and the presence of a fingerprint scanner. By the way, as a rule, Samsung uses AMOLED technology in their smartphones.What do we have here? Firstly, at the spectacular display ppi - 359 pixels per inch, which is more than the Apple iPad mini with the vaunted Retina.However, Samsung has used in the matrix circuit Pentile, which "saves" the subpixels and makes the picture less clear. Secondly, AMOLED provides unparalleled contrast and incredible viewing angles and features lower power consumption. True, the colors it produced oversaturated and unnatural. One consequence of such a display - high battery life, but it will depend heavily on the script using the tablet.
Front tablet Samsung Galaxy Tab S 8.4 looks like a copy of the Samsung Galaxy Tab Pro 8.4, only slightly more "angular" and rectangular. At the same diagonal tablet it became a little bit already, which further refines the side of the frame. Light sensor and distance, as well as on the Galaxy Tab Pro 8.4, the right of the speaker over the inscription Samsung. Along the ends of the plate is decorated with typical Samsung, decorative trim. If you look at the rear panel, there is already a noticeable differences begin. Backs New Tab S are not performed "under the skin", and perforated, as Samsung Galaxy S5, it must be "Native", the plates with the smartphone flagship. Moreover, Pro-version had a main chamber in the upper right corner, but now it is in the center, and the LED backlighting with the lens are not united together one frame of Stroke. In addition, the rear panel is provided with two circular buttons for the original cover. The unusual location of the speakers - one is on the left side of the upper end, and the other - on the left side of the lower end, both not far from the mysterious round buttons "under cover. In general, the appearance of the devices left a contradictory impression: even the IR port on the right side of the distance can be taken by mistake for USB-connector. But housing Samsung Galaxy Tab S 8.4 get slim, to emphasize this effect designers "cut down" the edge of the casing around the USB- and audio connectors, so it seems as if it was necessary for these connectors specially thicken body at this point. With regard to the materials of the shell, then there, as usual, used plastic, but it is not glossy back and will not collect fingerprints. The build quality is up to par. Samsung Galaxy Tab S 8.4 can be purchased in black or white.
Dimensions and weight
Tablet Samsung Galaxy Tab S 8.4 thin and light. It weighs just 295 grams, it is easier to such giants as Apple iPad mini Retina and Samsung Galaxy Note 8 . Case thickness reaches 6.9 mm, in our tests only thinner tablet Sony Xperia Z2. With a diagonal of 8.4 inches to cope with Samsung Galaxy Tab S 8.4, in our opinion, not very comfortable, and if you accidentally stumble on a finger is pressed into the body of the accessory button, the surprise at all possible to drop his hands.
Ports and interfaces
On the right side Samsung Galaxy Tab S 8.4 SM-T325 is located infrared port and a slot for microSD and micro-SIM card, above and to the left - empty, except for a tiny hole-in microphone. Bottom left audio jack and connector micro-USB 2.0 with support for MHL, that is, it integrates the functionality of the HDMI micro-USB. In addition to the USB-connector, the top and bottom have a pair of stereo speakers and microphone. In the presence of connectors Samsung Galaxy Tab S 8.4 richer than Apple iPad mini with Retina or Nexus 7. In terms of wireless connectivity, they are about the same, only the Nexus has NFC, from Samsung - IR and high standard of 802.11 ac, and the Apple iPad mini Retina better, if that does not work with the Micro-SIM cards and with Nano-SIM. Everything else Samsung Galaxy Tab S 8.4 on the spot: Wi-Fi (b / g / n / a / ac), A-GPS receiver with GLONASS, LTE-modem, Bluetooth 4.0 LE (low energy, low energy consumption) to A2DP support for audio. All is well, but on the other hand, in the same way as in Samsung Galaxy Tab Pro 8.4.
Performance
| Chipset : | Exynos 5 Octa 5420 |
| Number of cores and frequency : | four core, 1.9 GHz + quad-core 1.3 GHz |
| Memory : | 3 GB |
| Built-in memory : | 16/32 GB |
| Graphics processor : | Mali-T628MP6 |
If you want the tablet processor Qualcomm Snapdragon, the Samsung Galaxy Tab S 8.4 is not for you. This is quite unexpected, but both versions, without and with modem LTE-modem is not equipped with different and with the same eight-core Exynos 5 Octa 5420 (four cores at 1.9 GHz and 1.3 GHz, four) with integral 3 GB of RAM! As a graphics accelerator serves Mali-T628MP6. The plate was good benchmarks on the performance of the processor, but the graphics are not all so smoothly in our tests, Samsung Galaxy Tab S 8.4 periodically slow down in graphics-intensive games and at the highest settings, it simply indecent for the money. By the way, Apple iPad mini with Retina not experienced such problems, though no less impressive specifications. But do not forget that it is usually impossible to change the graphics settings in games at higher or lower. In synthetic tests Samsung Galaxy Tab S 8.4 shows the results for typical premium tablet. In our tests, each of which was carried out on several occasions, is the average of the five iterations. The benchmark Geekbench 3 at the plate good results -2 776 points in the Multi-Core benchmarks that best Apple iPad mini with Retina with his 2514 points. The benchmark SunSpider - 462 milliseconds, rather jauntily, but Apple iPad mini with Retina, we received an average of 417 milliseconds, which is faster. And here the graphic chip unimpressive results for a high price - 14,1 fps in the test T-Rex HD Onscreen C24Z16 of benchmark GFXBenchmark, tablet Apple iPad mini with Retina with its 21 fps again overtook Samsung Galaxy Tab S 8.4. By the way, even 2-3 times cheaper tablet - Nexus 7 (2013) and the Dell Venue 8 - to cope with the test better. Besides, it seemed strange that NOVA 3 is not supported on this tablet and Epic Citadel is not the native resolution, but only 1280 × 800 pixels, which does not look very presentable. With daily use Samsung Galaxy Tab S 8.4 is able to slow down: for example, if you open multiple windows in multitasking mode in the game at the highest graphics settings, or if the browser to open many pages full of different media content, and quickly flipping. However, in most cases, Samsung Galaxy Tab S 8.5 does not slow down.
Display
In the tablet Samsung Galaxy Tab S 8.4 uses Super AMOLED-display with a resolution of 2560 × 1600 - an impressive 359 ppi pixels per inch. The density of pixels per inch formally higher than Apple iPad mini 2, but the image will be less clear because of the application of the scheme Pentile. Here, the subpixels are arranged so that the subpixels of red and blue are twice less than green, but the resolution is considered as the green subpixels. And if the counted pixel density based on the three subpixels 1 pixel, then we obtain 239 instead of 359 pixels per inch, not much higher than at the same Samsung Galaxy Tab 4 7.0.
In our tests, the screen showed good results for 7-8-inch tablet. The display supports multi-touch, the touch input is no problem. The result of the maximum measured brightness, if you put a solid white background, low - only 278 cd / m2. However, this is one of the features of technology: if you reduce the area of the white, the luminosity of the white areas of the display will increase. If you draw a white circle on a black background, it increases the brightness to 406 cd / m2. Nevertheless, even with a solid white background picture looks much brighter than, for example, Samsung Galaxy Tab 7.0 with its 4 418 cd / m2.
Rather, here is backlighting, which in AMOLED-display is not just in the LCD crystals need to highlight. In the case of AMOLED-display, LED glow organic compounds. Apparently, this fact also led to the body of the device thinner. What it is not surprising, because there is not a need once the highlight layer. Distribution of brightness turned low - 85%, contrast - high, the device shown in 1946: 1. However, these measurements do not contrast much sense as black, in this case - just black, which turns "off" pixels.
Separately, it should be noted angles: they are just incredibly broad, the colors begin to invert only when you look at the screen at an angle of 0-5 degrees to its surface and is even a little mesmerizing. However, it suffers from color reproduction of the display, the problem is partly solved by the fact that it can be corrected by selecting different display modes: Adaptive film AMOLED, photo AMOLED, basic. The first three colors are oversaturated, with large color differences, but a broad color gamut that covers almost all of the standard Adobe RGB. In the transition to native mode rejection are reduced, the colors become more natural, and the color gamut is narrowed to sRGB. The display can be described as impressive bright, but color reproduction may alienate those who want to work with images.
Battery
Battery Samsung Galaxy Tab S 8.4 with a capacity of 4900 mAh has shown excellent results in our tests. Of course, in the case AMOLED-display energy consumption depends on what is shown on the display if to display a black color, the tablet does not expend much energy, to display a white color it needs more power than the conventional LCD. Galaxy Tab S 8.4 lasted on average 4 hours 21 minutes. three tests under load, 26 hours 21 min. - During peak hours, and 13 hours 40 minutes. -In playback mode HD-video. The tablet is fully charged in about three and a half hours that dolgovato to its capacity. Needless charger is small and lightweight.
Software
Samsung Galaxy Tab S 8.4 runs under the operating system Android Kitkat 4.4.2. By purchasing the tablet Samsung, we can expect that it will be equipped with some kind of specific, unusual features, and with a bunch of pre-installed applications. The device can operate in multiple windows, there is a mode "Children" private mode, and for the preservation of personal content and data.
Also, Samsung Galaxy Tab S 8.4 has a fingerprint reader. In order to "set" print, you have to move your finger on the key "Home" as much as 8 times. Well, what if there is a possibility to set an alternate character password. To unlock the tablet you will need to hold your finger only 1 time. By the way, after five incorrect attempts will have to wait 30 seconds and try again. The maximum number of prints that can be registered - three.
We decided to conduct the same experiment as for the 10-inch Samsung Galaxy Tab S 10.5: We asked four people "ask" the mark of the index finger of the left and right hands at once. Thus a tablet could unlock any of these 4 people. However, it managed to turn the plate with 5 of 8 of used fingers, and always the first time. In the arsenal of Samsung Galaxy Tab S 8.4 feature smart turn off the display - the screen will stay on as long as the plate sees that your eyes focused on the screen. The device is pre-installed many things: Google-services, voice recognition system S Voice, WatchON application to control the TV, Remote PC and SideSync to work with a PC and a smartphone, as well as the application WebEX conference, Hancom Office Viewer to view documents and a lot of others. The rest can be downloaded and Play Market-e.
Cameras
The Samsung Galaxy Tab S 8.4 uses the same camera as in the Galaxy Tab S 10.5. 2.1 megapixel front for video calls with the ability to shoot Full HD video, if you have a fast Internet connection. 8.1 megapixel (3264 × 2448) rear camera with a typical set: autofocus, LED flash, face detection and smile. It makes good for a tablet, the pictures, but only in good light. In general, to professional chambers far, and to top smartphone cameras too. The manufacturer has supplied the camera in different settings and effects for an interesting pastime: have image stabilization, continuous shooting, and the effects of different modes. According to its specifications, the camera Samsung Galaxy Tab S 8.4 cameras surpass Apple iPad mini Retina. However, the camera is not as important for the tablet.
Temperature
Samsung Galaxy Tab S 8.4 barely heats up during operation, but it is a bit "hotter" than the Samsung Galaxy Tab S 10.5. Apparently affected by more compact and thus more closely the contents of the housing arrangement. Maximum temperature at rest was 26.6 degrees. In the state of the load maximum surface temperature of the tablet - 39.3 degrees, which is "hot" the results of Apple iPad mini Retina by as much as 2 degrees. Since the plate seemed suspicious underperformed, we repeated the test twice when charging from the mains, then places the plate warmed to 45 degrees already, which is not a record, but hot enough.
| The maximum surface temperature of the Samsung Galaxy Tab S 8.4 in comparison with the Apple iPad Air and Apple iPad mini Retina | |||
|---|---|---|---|
| Title | Apple iPad mini Retina | Samsung Galaxy Tab S 8.4 | Apple iPad Air |
| Temperature | 37,6 ° C | 39,3 ° C | 40,4 ° C |
No comments:
Post a Comment