(Machine provider: Beijing Haitian Technology ThinkPad notebook franchise)
● Fine-tune the T420/T4 10 A surface ratio of the top cover.
▲A face ratio
Compared with T4 10, ThinkPad T420 has little change on the A side, and T420 only adds one? Lenovo? Signs, charging and sleep indicators moved to the right near the shaft.
Low layout change T420/T4 10 interface comparison
▲ front-end comparison
From the front, the first impression of these two notebooks is that T420 is much thinner than T4 10. In fact, T420 is thinner than T4 10, but only 2mm. The reason why the thickness of T4 10 looks very different is that the front end of T410 is straight and right-angled, while the front end of T420 is an inclined plane of about 45 degrees, so T420 is thinner directly from the front end.
From the front end, apart from the difference in thickness, the interfaces on the right side of the two notebooks are slightly different. T4 10 has a buckle and a card reader at the front end, while T420 has only one buckle, which is more concise.
▲ Rear side contrast
▲ Right interface comparison
▲ left interface comparison
As can be seen from the above three interface comparison diagrams of T420 and T4 10, the overall layout of T420 has been greatly improved, nearly half of the interfaces have been changed, and the interface distribution is more neat, making the machine look more concise and capable. Compared with T4 10, T420 sets the rechargeable USB interface on the right side of the rear end of the fuselage, moves the card reader interface to the right side of the fuselage, moves a USB interface on the left side to the right side, removes a USB interface on the left side, removes the less and less used 1394 interface, and upgrades the e-SATA interface to a USB/e-SATA dual-purpose interface.
● Screen ratio is changed to 16:9 T420/T4 10 screen comparison.
▲ screen comparison
We can see that T420 is shorter than T4 10, because according to the principle of ergonomics, T420 changes the screen ratio to 16:9, which is more in line with the visual range of human eyes. Similarly, the resolution of the screen has become 1366? 768, or higher 1600? 900。
● The area ratio of T420/T410bc is almost unchanged.
▲C face ratio
Compared with the previous generation T4 10, the C-plane design of T420 has not changed much. The layout of the keyboard is exactly the same, except that the position of the fingerprint reader has changed slightly.
▲ The position of indicator light changes.
Compared with T4 10, T420 slightly adjusts the position of the indicator light at the bottom of the screen, and moves the wireless, Bluetooth and hard disk indicators to the position close to the right hinge.
● Keep constant T420/T4 10 bottom comparison.
▲ bottom comparison
T420 and T4 10 are basically the same in bottom design, but there are a little more cooling holes at the bottom of T420, so the cooling performance of T420 should be slightly better than that of the previous products. However, from this picture, we can also find that T4 10 is wider than T420, so let's take a look at the width difference between the two machines through the following picture.
▲T420 is slightly narrow.
● Weight difference is about 0. 1kg T420/T4 10 weight comparison.
▲ weight comparison
Summary: From the overall design, T420 has little change compared with the previous generation T4 10, so T420 can only be regarded as an upgraded product of T4 10. Although it is only an upgrade, T420' s changes in screen, interface, cooling holes, etc. have brought a more reasonable and beautiful appearance, a thinner body and stronger heat dissipation capacity. This is just the design change of T420. If the internal hardware such as processor and graphics card are upgraded, the weight and performance improvement of T420 compared with the previous generation products is very worthy of recognition.