In the late stage of lazy cancer, this article has been approved for the last four years and it has only begun to be written. The contents of some of the things inside are a little behind, so I don't speak much. Please forgive me.
First, Lenovo T4900 Introduction and Usage Introduction
When I moved to my new home three years ago, Dad sponsored a Lenovo computer. Of course, according to my thoughts, I certainly did not want to buy this brand machine. Everyone understood. However, the old people have a lot of heart and they use it when they buy it.
In fact, this desktop configuration looks good, we take a look together.
CPU: INTEL I5 4590
Memory: DDR3 4GB
Hard disk: 1T 7200rpm
Graphics card: GT720 1GB memory
Others will not elaborate anymore. Generally speaking, this is a commercial computer and not designed for the family. Still in that sentence, the old man has one heart and it must accept it.
Second, the upgrade plan
But after all, after all, it was home, playing a game, listening to a song or something, and the effect I wanted was a little bit worse, so I started to prepare for the upgrading plan of the machine.
After thinking, the overall feeling is that display performance and audio performance are not satisfactory. Then purchased a video card and sound card, and purchased a power supply and chassis.
The video card selected was "Dataland R9 380 Cool 4G 980/5900MHz 4GB/256bit GDDR5 Graphics Card". Jingdong started. At the time, the price was 1399. For the first time, with thousands of graphics cards, the computers that were assembled before were never used. High price.
The sound card selected was "ASUS Xonar D2 Multichannel Music Sound Card (PCI)", which was also started by Jingdong. The price was 799 yuan.
Power selection is "Great Wall rated 1250W power supply EPS-1250DA gold power", Taobao start, the price 1098.
The chassis selection is "Sama Storm 5 (Black)", which is characterized by support for USB3.0, back line, side-through, long graphics, SSD, and power supply. Price 99, 12 interest-free instalments, is simply free.
Third, the upgrade process
Light up the device first. The first graphics card:
Here is the sound card: 
power supply:
Chassis:
Then completely disassemble the original chassis and install it in the new chassis. First install the power and then install the motherboard, the motherboard installed out of trouble, Lenovo brand machine motherboard interface is designed specifically, that is, simply can not find the key on the chassis, hot restart, USB, front audio port Which is the wiring, the new chassis can only give up. In fact, the internal alignment of the brand machine is really meticulous.
Well, put the motherboard CPU back and put the power into the original small chassis. The line is thick and hard, and the chassis feels cool.
Look at the comparison between original graphics card and new purchase display
After the upper body is very compact.
With only two PCI interfaces, the sound card can only be placed on the most edge, or it will affect the graphics card installation.
This is the end result.
Because the space of the machine is too small, the video card and the power supply have become big problems, and it takes a lot of effort to install it. It feels that the heat dissipation will be a very tricky problem. To solve this problem, you can only replace the motherboard.
Behind the chassis is a big knot, the bottom is the 5.1 speaker line, the monitor is up, and then up to 4 USB takes up 3, respectively, camera, mouse, headphone decoder output line. Need to be organized.
Fourth, the effect of upgrading
The graphics card was fairly satisfied after the upgrade. The processor, memory, and disk have not been replaced. No comparison is made here.
V. Network Renovation Plan
I look forward to my follow-up renovation plan, starting from the multimedia cable box office, centering on the living room TV set, and arranging the home network.
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