Bán Laptop Lenovo Thinkpad - Thinkpad T420 CPU I7-2620M, Ram 4GB, HDD 250GB, VGA Onboard, dành cho dân kỹ thuật. Giá bán T420 I7-2620M 5.9 triệu. BH 3 tháng.
Lenovo Thinkpad T420 I7-2620M
Model: Lenovo Thinkpad T420 14 inch
Cấu hình: CPU I7-2620M, Ram 4GB, HDD 250G, VGA Onboard. Phím tiếng Nhật.
Giá bán Lenovo Thinkpad T420: 5.900.000 VND (bảo hành 3 tháng)
Khách hàng bảo hành thêm vui lòng + 300K/ tháng
Bao gồm máy + sạc + chuột quang loại tốt + chống sốc + miếng lót chuột.
Liên hệ: 0907 924 921 - 0972 699 698 - A. Long
Địa chỉ: 116/28 Dương Quảng Hàm, F5, Gò Vấp, HCM
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Let”s start with a tour around the device itself. We notice that the positioning favorsright handed users a bit. Depending on the utilization of single ports, a few cables can gather on the left, which may considerably obstruct the work area on the laptop”s left. Two of the five USB 2.0 ports, the display port, the VGA and the RJ45 are found on the left”s center edge.
In opposition, Lenovo has taken care to place potentially permanently occupied ports, such as the other two USB 2.0 ports and the eSATA/USB combo port, in theright”s rear area in the interface arrangement. In addition, the right accommodates, from front to back, a 3.5mm combo audio socket, the optical drive in an Ultra Bay slot, a 4in1 cardreader that supports SD, MM, SDHC, SDXC, and anExpressCard34 port.
The rear is completed by a powered USB 2.0 port and a RJ11 modem socket. The power adapter is also connected on the case”s rear.
To our regret, Lenovo forgets, like Dell in its E6420, to install a USB 3.0 port in the course of the refresh. Although the eSATA interface also bids a higher data transfer rate than USB 2.0, increasingly more external mass memories are being offered with USB 3.0 ports and eSATA is disappearing little by little from the market. In comparison to the competition, we also notice that Dell relies on the utilization of a HDMI port in the E6420 and thus accepts the according restrictions. In opposition, Lenovo remains resolute in installing a display port directly on the device.
Compared with its predecessor, the T410, hardly anything of significance has been changed. Merely a powered USB interface has been added. Moreover, the interface layout has been revised, but not really improved. So, if you find cables in the work area beside the laptop disturbing, or if you don”t want to re-connect all the cables after mobile use, you can make use of a docking solution. The correlating docking port is, as usual, on the notebook”s bottom.
Talking about docking stations – it remains interesting to see which docking solutions will find their way to Europe. Currently, two models are available for the T420 in the USA: The ThinkPad Mini Dock Plus Series 3 (US/Canada/LA) (-> manufacturer”s information) for about 250 US dollars. It allows connecting three additional external monitors in addition to the installed display. Secondly, the ThinkPad Port Replicator Series 3 (-> manufacturer”s information) for about 280 dollars.
Communication
Alike the T410, our T420 test sample scores with an extensive communication configuration. Everything that is useful and available is installed. A Bluetooth module version 3.0 is optional, and installed in our test device. It allows data exchange with small, portable devices, such as PDA or mobile phones. Just as optional is a mobile broadband module (F5521gw Mobile Broadband) also installed in our Thinkpad. The correlating SIM slot is located in the battery compartment. The matching antenna cables are present so that a UMTS/HSPA module can be retrofitted later. In regards to WLAN, various options are given. An Intel Centrino Ultimate-N 6300 AGN (agn) module is in the test device. The laptop can be linked to Ethernet networks via the Intel 82579 LM Gigabyte Network Connection. Video conferences aren”t a problem anywhere with the (optional) 720p HD camera and this configuration.
Security
In addition to the obligatory Kensington Lock, the T420 also has a fingerprint reader, among other things. A splash waterproof keyboard saves data from loss in case of mishaps with liquids.
Supplies
Besides the necessary paraphernalia, such as power adapter and battery, only a bit of printed information is included in the scope of delivery. The user should create recovery DVDs for the pre-installed Windows Professional 64bit immediately after purchase. This isn”t a problem with the convenient ThinkVantage tool, though.
Warranty
The standard warranty for the T-range is three years in Europe. The basic warranty only includes a one year bring-in service in the USA. Various warranty extensions can be purchased optionally.
Instead of the 16:10 format as in the T410, a 16:9 aspect ratio is now used. The display diagonal has been marginally reduced from 14.1 inches to 14 inches. In return, the resolution has been increased from 1440x900 pixels to 1600x900 pixels. Thus, there are now so many pixels in the total height as in the previous model. However, the test device has gained a bit of width.
As it isn”t expected differently from a business device, the display surface has been AR coated. The device thus not only meets the requirements on display workstations, but also is more suitable for outdoor work.
The T420 has generally improved in comparison to the T410 in terms of assessments. It is brighter and illuminated more evenly. Merely the black value is slightly lower than in the prior model. Nevertheless, the better brightness results in a somewhat higher contrast.
In contrast, the E6420 scores with a significantly higher maximum brightness of 320 cd/m2 and still 277.7 cd/m2 on average. In return, Dell”s laptop has to admit clear defeat in the field of black value and contrast.
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Currently, various models with Core i5 or i7 of the second generation are being offered. To be exact, our test model was equipped with an Intel Core i7 2620MSandy Bridge CPU. It is presently the fastest dual core processor from the Sandy Bridge family that was introduced at the beginning of 2011. It can process up to four threads at the same time thanks to Hyper Threading. The Turbo Boost technology allows single cores to overclock dynamically from 2.7 GHz up to 3.4 GHz, depending on load and cooling capacity. In comparison to the Arrandale processors, the turbo function has been improved among other things.
The DirectX 10 capable Intel HD Graphics 3000 chip incorporated directly in the processor is available for the video output in our test device. Thus, the graphics performance is about on par with an Nvidia Geforce 310M entry level card. Alike the Latitude E6420, models with an NVIDIA NVS 4200M and Optimus technology are listed in the USA.
Our T420 has a four gigabyte DDR3 RAM available for the main memory. They are located on one single, inaccessible for the user, chip. Only a second, still unoccupied bank is accessible via the maintenance cover. An intended upgrade can easily be accomplished by the customer. Due to the 64bit Windows 7 Professional operating system, the four gigabyte of main memory can be exploited efficiently, in contrast to a 32 bit version, and there”s nothing standing in the way of a RAM upgrade. The processor”s memory controller can address a maximum of up to eight gigabyte of DDR3-1066/1333 RAM.
Both the processor as well as the application performance is unsurprisingly a bit higher than the E6420 equipped with a Core i3-2310M. The performance rates are according to the expectations on this hardware configuration. Our test candidate achieved a total score of 7845 points, which is especially due to its high communication sub score, in the PCMark Vantage test for rating the overall performance. Thus, it”s even on par with stronger gaming machines, like the Asus G73SW (GeForce GTX 460M, Intel Core i7 2630QM), in terms of application performance.
Graphic Performance Verdict
The test device still can keep up with gaming machines like the Asus G73SW in regards to application performance. However, in view of the graphics hardware, it doesn”t stand a chance in 3D performance as we expected right from the start. That is confirmed by the results in the Cinebench Shading Test and the various 3DMark benchmarks.
Unfortunately, the test results are beneath those that would be expected for a HD Graphics 3000. However, since the power measurements always remain under par, we have to reckon with a defective device. Another indication for this is that the device detection of the ThinkVantage Tools fails regularly. In order to exclude a problem in the settings we checked the BIOS and the energy settings in Windows 7. We will attempt to attain a replacement device for an update review. We would refer to our detailed test of the Intel HD Graphics 3000 chip and to the HD Graphics 3000”s spec sheet for more information.
3DMark 05 Standard |
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6131 points |
3DMark 06 Standard |
|
3381 points |
3DMark Vantage P Result no PhysX |
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1696 points |
System Noise
The T420 always remains fairly quiet regardless of the load. The system noise is a constant 32.2 dB(A) in low load. The hard disk is slightly louder with 32.5 dB(A) during access.
The test laptop just only reaches a maximum noise level of 35.2 dB(A) during ourstress test (GPU and CPU in full load). The operating noise thus always stays at an acceptable level. The power consumption assessments (28W max) however indicate that the processor doesn”t exploit its maximum possible capacity even during the stress test. Monitoring the processor clock rate with the CPUZ tool recorded the default clock rate of 2.7 GHz for the CPU in the stress test. This means, no overclocking of all four cores and the installed GPU during load. The CPU clocks with 3.19 GHz when only Prime95 is activated. When Furmark is added, the system throttles down to 2.7 GHz.
We can also only record a maximum of 3.19 GHz in Cinebench R10 Single Core rendering. The clock rate meter stays at the same level in multi core rendering. The i7-2620M”s maximum possible clock rate of 3.4 GHz is consequently not exploited in any tested state. Nevertheless, the benchmark results that are determined in Cinebench R10 stay within the i7-2620M CPU”s expected range and don”t show any irregularities in regards to a possible throttling.
Noise Level
Idle |
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32.3 / 32.3 / 32.3 dB(A)
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HDD |
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32.5 dB(A) | |||
DVD |
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36.4 / dB(A) | |||
Load |
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33.5 / 35.2 dB(A) | |||
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30 dB
silent
40 dB(A)
audible
50 dB(A)
loud |
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min: , med: , max: Voltcraft SL-300 Plus (15 cm distance)
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Speakers
The speakers” quality isn”t to be rated as high in an office laptop for professional use as in, for example, a multimedia notebook. In fact both stereo loudspeakers, on the keyboard”s left and right, are basically suitable for voice. Music enjoyment doesn”t turn up due to the tinny, bass-poor and treble-heavy sound. High quality headphones, connected to the 3.5 mm audio combo socket, can remedy this. The signal is transmitted clearly, undistorted and static-free in the test (audio test only, no measurement).
Idle (without WLAN, min brightness) |
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7h 28min |
WiFi Surfing |
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5h 59min |
Load (maximum brightness) |
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1h 06min |
The Latitude E6420 clearly has the lead in the battery tests due to its larger 9 cell battery. Our test laptop”s runtimes are nevertheless remarkable in relation to the battery”s capacity. That is especially due to the fairly low power consumption. It is a bit lower than that of the E6420 with 6.8 to 11.5 watts in idle mode.
Surprisingly, the maximum power consumption wasn”t as high as expected in the stress test (100% CPU and GPU load). Solely the CPU proves to have a maximum power loss of 35 watts. However, our meters only recorded 28.6 watts for the entire system. Thus, we checked the setting in Lenovo”s PowerManagement in Windows 7 and the BIOS settings. But we didn”t find anything in neither place. The settings for mains operation are clearly set to "Maximum Performance" in the BIOS.
At any rate, the T420 is also available with a dedicated NVIDIA NVS 4200Mgraphics card in the USA. The Optimus technology is thus used to keep the power consumption low during low load. Since our E6420 test device is equipped with the NVIDIA NVS 4200M graphics card and Optimus option, our T420 has a clear advantage in power consumption during load scenarios.
Off / Standby | 0.1 / 0.2 Watt |
Idle |
6.8 / 10.2 / 11.5 Watt
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Load |
22.9 / 28.6 Watt
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Key: min: , med: , max: Voltcraft VC 940 |
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