Bán laptop dell latitude e6420 atg quân đội - màn hình cảm ứng - dell e6420 atg i7-2620M, ram 4g, hdd 500g, vga onboard - dell e6420 atg giá 7.5 triệu. BH 3 tháng.
Laptop Dell Latitude E6420 ATG I7-2620M
We describe the well-designed input devices with the crisp pressure point and the accurate, conically shaped keys comprehensively in the review of the E6420-basic version.
The anti-glare screen (model: Samsung LTN156AT02P01, 140AT DELL P/N: X7JCD) has a resolution of 1366 x 768 pixels. Dell only offers the HD high gloss screen with the same resolution, but single touch function as an option. The manufacturer intentionally doesn”t offer a WXGA++ option: A 1600 x 900 pixel screen doesn”t exist with the desired high luminosity. Moreover, such a screen is hardly ever requested by customers, according to Dell.
The screen can”t render magnificent colors with a black value of 1.44 cd/m2. 557:1 isn”t a weak rate though. The reason: The contrast is the result of average brightness ÷ black value = 557.
Our test device is equipped with a Core i5 2520M which includes the integrated Intel HD Graphics 3000 (IGP). The single RAM module from Hynix is a SO-DIMM with a capacity of 4 GB (maximum 8 GB as 2x 4 GB). For this, it is necessary that Windows 7 Professional 64bit is installed on the 256 GB SSD.
The options at Dell range from a Core i5, as in the test device, up to a Core i7 2640M (2.8 GHz) and from 250 / 320 / 750 GB hard disks up to 128 / 256 GB SSDs. The surcharge for the 256 GB SSD in the test device is EUR 339. The processor graphics can be complemented by an NVIDIA NVS 4200M for an extra charge. In these cases, Nvidia”s Optimus technology would take care of automatic switching (+ EUR 80).
The Core i5 2520M has a nominal clock of 2.5 GHz, but can be clocked up to 3.2 GHz and higher via Turbo 2.0 depending on the cooling. We criticized the E6420-test device with Nvidia”s NVS 4200M in this regard because the 35 watt GPU reached up to 99°C thermally. This can”t happen again since only the processor integrated Intel HD 3000 Graphics is in the ATG. However, the NVS 4200M can also be configured here.
The conclusive processor tests from Cinebench make a very good impression. The scores are all in the upper range of this processor. Cinebench R11.5 finishes with 2.87 points (best score: 2.89 points). The single core test looks especially good: 713 seconds in SuperPi 32m is the shortest and thus best time for an i5 2520M.
In the energy settings, Dell has the setting "Ultra Performance" that claims to "reduce CPU throttling" and "increase fan speeds". However, the performed benchmark tests didn”t record any significantly different results when we compared them to the default setting "High Performance". But a performance difference was seen in the modes "cold" and "silent". The frequency is limited to 1.8 GHz here. Nevertheless, Cinebench R11.5 finishes with almost the same score: 2.84 points. In contrast to that, the single core test Super Pi needs approximately 1/3 longer (2m test 49 rather than 29 seconds).
|PCMark Vantage Result||
|PCMark 7 Score||
Approximately 210 GB of memory are left on the 256 GB LiteOn SSD after Windows and Dell”s software is installed. Depending on the benchmark, the data carrier has a very good read rate of 288, 350 or 417 MB/s (HD-Tune/Crystal DiskMark/AS-SSD). There are major differences in the SSDs regarding the read and write speeds of bigger and smaller files. When compared, the installed LiteOn model definitely belongs to the faster SSDs, particularly when larger files are read out. PCMark Vantage acknowledges that with a strong HDD sub-score of 32,147 points. The E6420 equipped with an HDD only manages 3,178 points in this benchmark (10%).
|3DMark 06 Standard||
If you are looking for a quiet work device, you are dead right with the Latitude. The fan doesn”t emit a sound in the office or when used on the go with short load periods and a lot of idling. The notebook is absolutely mute due to the silent SSD here. The fan”s first level turns up to 35 dB (A) and remains at this speed. It doesn”t matter if we perform a CPU benchmark or copy files. Since the fan doesn”t intermittently change its speed, the Latitude ATG makes a very balanced impression.
We tickle everything out of the cooling system under very high and constant load. A level of 41 dB (A) is reached when Furmark (GPU) and Prime 95 (CPU) run at the same time. Pleasant: The fan is silenced after just 30 seconds after the load ends (deactivated when idling).
29.6 / 29.6 / 35.3 dB(A)
||34.6 / dB(A)|
||35.2 / 41.3 dB(A)|
min: , med: , max: Voltcraft sl-320 (15 cm distance)
The sound check shows that the broken speaker of the standard E6420 was an individual case. Both speakers are audible and emit a loud and undistorted, even if monotone sound. The speakers at the front don”t have any basses. The output is rendered over a single headphone and microphone combo jack. Three hardware buttons beside the keyboard facilitate muting the sound and there”s no need to search for the corresponding function key.
No one will now be surprised that the power consumption is on a low level when looking at the well-aligned runtime. The maximum idling power consumption of 18.4 watts, which is due to the brightness setting of 763 cd/m2, is striking. The technically similar E6420 consumes 13 watts in this assessment, but the maximum brightness is only 278 cd/m2.
|Off / Standby||0.7 / 0.4 Watt|
8.1 / 10.4 / 18.4 Watt
56.4 / 77 Watt
|Key: min: , med: , max: Voltcraft VC 960|
|Idle (without WLAN, min brightness)||
|Load (maximum brightness)||
The Dell Latitude E6420 with the tag ATG supplies additional portability (handle) and ruggedness (ballistic armor). That will appeal to everyone who doesn”t exactly treat his/her device with kid gloves, or people who use their laptop remote from cushioned business lounges.
The ATG is an alternative particularly for use outdoors in the sun. The screen”s brightness sets a new record with a large gap: 763 cd/m2. A loyal companion with high reliability is created in combination with the shock-proof SSD and prolific typist-suitable input devices.
If you have reasons for a semi-ruggedized notebook, you luckily don”t have to choose from hundreds of models. In addition to Panasonic (Toughbook C1), only Getac (S400) and Wortmann (TERRA Mobile INDUSTRY 1280) offer corresponding devices. However, there are other niche players.
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