Win7 installed must know: SSD solid state drive

Computer store News SSD as a relatively new industry, compared to the development of mechanical hard drives for more than 50 years, it is difficult to reassure users. Although SSD has too many advantages, many netizens have a lot of doubts when they plan to buy, so this article collects the six questions that users are most concerned about. I believe that after reading the article, it will be of great help to everyone. —— Doubt: How long does the SSD SSD last? User Question 1: SSD is very popular today, but what should you pay attention to when purchasing SSD? Answer: The first should be clear about your needs and choose SSD capacity according to your needs. At present, the mainstream capacity is 128GB. If it is an entry-level desktop user, you can choose a 60GB system; notebook users need a larger product. The second is the hardware platform. If it is old-fashioned, your platform itself is limited. We have no way to provide full official speed. For example, if you are a previous P35 or a low-cost H61, then your disk interface is SATA2. Enjoy the performance of SATA3 SSD, so it is also based on your own platform. The choice of the third operating system, we know that XP has not been valued by everyone, Microsoft also announced that it is not upgrading XP, disguised to upgrade to Windows 7 or the upcoming Windows 8, these software basically support SSD, hope users Windows 7 or Windows 8 can be used when using a solid state drive. Finally, the AHCI function should be turned on when the operating system is installed. Some advanced instructions of this function are also the best way to improve the performance of SSD. User Question 2: SSD uses different Flash granules, so the number of writes has a corresponding limit. So, like the mainstream MLS particle SSD, how long is the normal use period? Answer: When the SSD was just getting started, there is a concept called MTBF for SSD, which means average time between failures. This is often used in mechanical hard disks. Now, after several years of development of SSD, we have redefined MTBF. With the Vertex4 product just released by OCZ, we can effectively avoid writing and writing to a certain Flash particle through Ndurance 2.0 technology. The average is smeared on each particle, so that there is no problem that a certain flash has reached the end of its life and others have not been written. When it comes to life issues, OCZ Vertex4 products use synchronous flash memory. Basically, each block can be rewritated more than 3,000 times. With Ndurance 2.0 average erasing technology, each block is rewritten at least. It will be rewritten after two or three thousandths. It will always look for blocks that are not written or written relatively few times, so users don't have to worry about the trial life of SSD. Basically, you need to replace it. Before the large-capacity SSD, the SSD can still be used normally, so you can rest assured.

—— Doubt: Does SSD need to be defragmented? Netizen Question 3: In the past year and this year, there was a period of time in the SandForce master control hot, including OCZ, Kingston, ADATA and other solid state drives all use 2281 master, then what is the difference between the Indilinx master and SandForce? Answer: The SandForce master uses a design without a cache. The principle is to use compression technology to extend the life of the SSD. For example, now 1 megabyte of data should be written to the SSD. The compression technology controlled by SandForce will compress 1 megabyte of data into 0.5 megabytes, so that the SSD can be inserted by 0.5 megabytes. When my data is 1, the concept of writing to a solid state drive is 0.5. And our Indilinx has similar features based on Vertex4, the same data is 1, the write to flash may be 0.6, but not through compression technology. The biggest feature of SandForce and Indilinx is that both have excellent write magnification, but one is to be compressed and the other is not compressed. According to our statistics, in fact, there are still a lot of incompressible data in real applications, such as video, music, etc., so the performance of Indilinx Vertex4 products is very average under the comprehensive environment application.

User Question 4: When using a mechanical hard disk in the past, after running a period of time, the system will slow down. At this time, we need to rearrange the fragments to restore the performance of the hard disk. So, can we do this for SSD drives? Answer: I want to tell you here, don't use Windows defragmentation, because SSD works differently than mechanical hard disk. We all know that the mechanical hard disk is a concentric circle of physical state. There are magnetic powder, magnetic column and magnetic fan on the disk. The defragmentation of these is to concentrate these magnetic powder, magnetic column and magnetic fan in one place. Let him become an adjacent magnetic column state, so that the closer the data in the hard disk, the faster it will be read. In other words, as long as the data is in the same concentric circle, it can be read very quickly. Next information. The SSD solid state drive is not like this. When I am full of data in a block, it works by the cross search method, which is what we call the X axis and the Y axis, so it is completely different from the mechanical hard disk. The same concept, then I do not recommend users to manually execute the defragmentation software. If you use the Vertex4 product, as long as you don't give him any command, the performance recovery function will be triggered automatically in 10-20 minutes, so the SSD is just fine.

—— Doubt: How much loss of the old motherboard with SATA3 solid state User question 5: At present, most motherboards are still the interface of SATA2 in the past, and now most SSDs have been transitioned to SATA3 interface technology, then if How much performance will you lose when using the old motherboard to connect to the SATA3 solid state drive? Answer: From the perspective of the bandwidth of the two interfaces, it should be a concept of 2 times. For example, if OCZ Vertex4 provides 500 megabytes of reading and writing, it is necessary to subtract more than 200 megabytes from the SATA2 interface, so the read/write speed of your platform will be limited to more than 200 megabytes. In fact, more than 200 megabytes is enough for the general notebook experience, because the current mechanical hard disk is mainly in the IOPS of 4KB small files. However, for the transmission of some large document data, it may be limited by the hardware interface. It can only be within the limit of more than 200 megabytes, which is slower than the official nominal of more than 500 megabytes. The natural processing time will increase accordingly. The difference between the two is here. . User Question 6: Most of the accessories are now in accordance with Moore's Law. The higher the performance, the larger the capacity, the higher the cost performance. Is the solid state hard disk the law? Answer: Yes, the internal components of SSD are actually the core components of master control and NAND Flash, especially Flash. The higher the process, the larger the single capacity, and the natural cost will be greatly reduced. We believe that SSD solid state drives are getting more and more in the market. In a mature state, the price will get closer and closer to the needs of consumers, and the Vertex4 price we launch will slowly approach the consumer's psychological expectations in the coming months. To give a simple fact, at this time last year, 900 yuan to buy a 60GB solid state drive; this year 120G can also be bought with 900 yuan. Every year, the price-to-price ratio of SSDs is developing in a positive direction. At this time next year, you can expect to buy 240G or 180G at the price of 120 yuan this year, which means more capacity for users. You can put more data here, so you don't have to worry about not letting it go. Therefore, in general, it is early to buy early, and the price of buying at night will be lower and lower.