Surely I should not be the first person to buy this brand of SSD, but when it comes to the first sun, I am the first to eat crabs.
First posted a link, second-hand owner bought.
The original is divided into three parts:
Unpacking
Appearance evaluation;
experience feelings.
Go directly to the topic:
1. Out of the box
The hard disk company gave the allotment, so it is good or bad.
The out-of-box process is gone, because a lot of things come together for the financial signing and the hard disk is handed to me, so there is only a hard disk out of the box.
There is a layer of plastic film on both sides of the front and back. The appearance is very good, but the outer plastic film seam is really touching when it is heat-shrinking. The following will give the figure.
The shell is very thin, but the SSD should not be afraid of falling. JD Express courier is also very safe, and so far there have been a lot of things to buy without a case of appearance damage.
This heat shrinkable film seal is not a little bit worse, the difference in the capital, the design can be why you did not pay attention to this? The United States and the United States do not know if Lenovo has not sold out of appearance will not be the same?
Hard disk purchased and used East, so look out of the box to see:
There are seals around the front and back, and the seal will tear off and leave the shout. Anyway, the second-hand suspicion is gone, but the determination is one-handed.
2. Appearance evaluation;
Use instructions, installation guides, SSDs, and housings from top to bottom left to right.
The front of the hard disk was brushed and looked pretty textured. It was not a little bit better than the panel that intel didn't handle.
The back is also a drawing process, the above posts on the product introduction, here you can see the model and storage space, not coded.
Shining cheats, and then did not flash, but no traces of use, had wanted to take a look at the open, but there is a warranty check to do it, and this is a good pit to other brands habitually get their hands to take a look at the flash inside.
3. Use feelings;
Because it is the engraved system, it will be turned on after installation, without any monitoring software installed, just visually check the power-up for 9 seconds and float for 2 seconds, and then start writing original here, so it does not represent his final boot value. , It is still very happy to be here. Below it is very unhappy.
The I5 2430 2.4ghz/HD 3000 set-up platform is not too bad, but the actual software test writing and reading speed is really touching. The official introduction is to read 547 (MB/s) and write. Into 500 (MB/s)
But how is my speed so low? All of the AS SSDs used here measured two times in the middle and thought that all the driving problems were rescanned and then the computer was restarted. This time, the boot was still fast, and there was no visual and first time access, and a higher speed was achieved. Picture upload, the first test results are more touching, this SSD is really toxic, toxic, toxic.
Then directly installed PS, CAD, this is a software that works very often, the result is all seconds open, I am also drunk.
Final summary: the appearance of praise, the use of praise, the company with more praise, the only speed difference assessment.
The story of Ethernet began in the ALOHA period. The exact time was after a student named Bob Metcalfe received a bachelor's degree from the Massachusetts Institute of Technology and moved to Harvard University across the river to pursue a PhD. During his studies, he came into contact with Abramson's work, and he was very interested in it. After graduating from Harvard, he decided to stay in Hawaii for vacation before going to Xerox Palo Alto Research Center to work in order to help Abramson work. When he arrived at the Palo Alto Research Center, he saw that researchers there had designed and built machines that would later be called personal computers, but these machines were solitary; he used the knowledge he gained to help Abramson work with his colleague David Boggs designed and implemented the first local area network. The local area network uses a long thick coaxial cable and runs at a rate of 3Mbps.
They named this system Ethernet, and people once thought that electromagnetic radiation could be transmitted through it.
Shared medium
The Carrier Sense Multiple Access (CSMA/CD) technology with collision detection specifies a method for multiple computers to share a channel. This technology first appeared in the ALOHAnet developed by the University of Hawaii in the 1960s, which uses radio waves as a carrier. This method is simpler than token ring network or main control network. When a computer wants to send information, it switches between the following actions and states:
Start-If the line is idle, start the transmission, otherwise skip to step 4.
Send-If a conflict is detected, continue to send data until the min echo receive interval is reached to ensure that all other transponders and terminals detect the conflict, and then skip to step 4.
Successful transmission-report to the higher-level network protocol that the transmission was successful, and exit the transmission mode.
Line is busy-keep waiting until the line is free.
Line is idle-before reaching the maximum number of attempts, go to step 1 to try again at random intervals.
Exceeded the maximum number of transmission attempts-report the transmission failure to the higher layer network protocol, and exit the transmission mode.
Because all communication signals are transmitted on the shared line, even if the information is only sent to one of the terminals (destination), it will be sent to all computers on the line in the form of broadcast. Under normal circumstances, the network interface card will filter out the information that is not sent to itself, and will send an interrupt request to the CPU when it receives the information whose destination address is its own, unless the network card is in Promiscuous mode. This "one talk, everyone listen" characteristic is the security weakness of the shared medium Ethernet, because a node on the Ethernet can choose whether to listen to all the information transmitted on the line. Sharing cables also means sharing bandwidth, so in some cases the speed of Ethernet may be very slow, such as after a power failure, when all network terminals are restarted.
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