In 2009, many industries began down and out, which is  extremely evident in IT technology industry such as smart phones, PC and smart  televisions, then affect the upstream industry. Particularly in the global  semiconductor market, it has been very "bleak" since 2019, especially  in DRAM and NAND flash. The consecutive gloom of DRAM and NAND flash further  affects the price of SSD. Nowadays, SSD is very cheap. It is reported from  international market data that 1GB SSD just need $0.2 which is reasonable. Do  you want to buy one?
    SSD  continues to be gloomy, the price is reasonable.
  
  It was reported by TrendForce that the supply exceeds the  need. SSD suppliers have been caught in a price war, leading to a fall in the  price of SSD for PC OEM manufacturers. TrendForce also forecasts that the price  of 512GB and 1TB SSD will drop to a record low of $0.1/GB in the end of 2019.  That means SSD price will continue to fall. However, due to the smaller price  gap between PCle and SARA SSD, faster PCle interface will be popular.
  
  To identify the price of SSD is cheap, we search the  related quotation in the Internet. The data indicates that many 500 GB SSD hard  disk e-commerce prices are only over $70, even 1000 GB SSD is around $100, the  price has dropped to the "freezing point". In 2017 the price of 256GB  TLC SSD is about $100. It is a good opportunity to buy SSD PCle with interface  in end of this year for most PC users like game players, design graphics and AI  data calculation platforms.
  
  According to market law, the product price is relative to  market relation between supply and demand. The dropping price of SSD is  directly affected by the market falling demand for DRAM and NAND flash and  indirectly by other factors, such as oversupply, weak demand for terminal  products of servers and smartphones, release of 3D NAND capacity and so on.
  
  3D  NAND takes over the flash memory market
  
  3D NAND flash is an initial flash  memory developed by Intel and Micron, which solves the limitations of 2D or  flat NAND flash memory by stacking memory particles together. The development  of 3D NAND make flash memory density be higher to reduce its cost and improve  production efficiency. With the expansion of the production scale of 3D NAND,  the increase of production capacity and the improvement of the 4th generation  64-layer and 5th generation 72-layer 3D NAND  technology, the demand for NAND Flash exceeds the demand.

  At present, 3D NAND flash suppliers mainly are Samsung, SK  Hynix, Toshiba and Micron. At the same time, some Chinese  enterprises make achievements in 3D NAND development. In fact, it is a  challenge and opportunity for storage module factory when facing price  falling in NAND Flash market. But technology innovation will make outdated SSD  price continuous falling. Samsung has said that the number of 3D NAND stacks  layer will reach to 500 in the next five years and 1000 in 10 years.
  
  At present, 4 NAND flash generally compose SSD hard  disks. If 3D NAND flash becomes to 500 or even 1000 layer, which means the one die  capacity may even to 2TB. At that time, ordinary SSD will be phased out. By  2020, with the development of 5G and Internet technology, big data will  increase explosively. The greater demand for storage and capacity 3D NAND flash  will revolutionize the SSD market.
   
  The  end demand is weak and SSD supply exceeds demand.
  
  According to DRAMeXchange, NAND Flash industry obviously  oversupply in 2019, PC OEM SSD prices plummeted for SSD manufacturers fighting  a price war. Because the average price of the mainstream SSD contract has  fallen by more than 50% since its peak in 2017, and the NB SSD carrying rate  has broken through the 50% for the first time in 2018. Chen Xuwei,  associate director of DRAMeXchange, points out that the SSD  carrying rate is expected to be 60-65% in 2019, which also indicates that  the SSD market space is much less than before.
  
  In addition, SSD falling price is mainly due to overall low  demand for smart phones, tablet computer and service, of which the flash memory have same production origin with SSD.
  The data just from smart phones shows that the same  period shipment of smart phones is lower than 2018 or 2017. The number  is 459 million in 2017 and 2018 is 408 million. According to the latest  research by Counterpoint Market Pulse Market Monitoring Services, shipments of  smartphones in China fell by 7% in the first quarter of 2019 compared with the  same period last year and 12% in the first quarter of 2019. With the influence  of other markets, the NAND Flash market has changed from a shortage of supply  to an oversupply of demand.
  
  The  PCle SSD permeability is expected to exceeding 50%.
  
  Macroscopically, the reason for the cooling of  semiconductor market is very direct. PC, smart phones,  server and data  center OEM customers tend to be conservative for future sales and have high  inventory level, which leads to weak spare momentum and makes the NAND Flash  market continue to seriously oversupply.
  
  It is undoubted that many users tend to choose SSD  with higher speed for its falling price.
  
From the second quarter average contract price, at  present, price difference between Premium level PCIe SSD and SATA SSD are less than 6% while that between Value level PCIe SSD and SATA SSD are close to zero. It can be  predicted that by the end of the year, the market penetration of PCIe SSD is  expected to exceed 50%. By that time, it will replace SATA SSD to become the  mainstream of the market.

  Honestly, the AI war improved processor performance, and  the demise of mining brought graphics card prices back on track, but this led  to a decline in SSD prices. Which meant that PC players could get better  performance and experience well with less money.
   
  Extended  Reading: Guide for SSD Purchase
  
  SSD with fast reading and writing and evident faster  computer operation speed is very popular. But the relatively expensive price  has become the threshold for many DIY users to choose and buy. For those  planning to buy SSD, they still need to do enough homework.
  
Firstly, looking interface type. There are many types of  SSD interface.We must select SSD according to  the computer needs and motherboard interface. The main SSD interface types are SATA interface, M.2 interface and MSATA interface. SATA is the most common  interface type and almost all motherboards can support it. However, because  the products of SATA interface mainly implement SATA standard, there are  obvious limitations on reading and writing speed.
  M.2 interface, which is native to the motherboard, is  quite common in notebooks. According to the different protocols, M.2  interface can be divided into SATA standard, PCIE standard and NVMe standard.  The read and write speed of NVMe SSD is much higher than the former. These products are thin in size and can be divided into 2230,.2242, 2260  and 2280 according to their length. They are named after mm in length and  width.
  Next, looking brands and particles. At present, there are  many brands of SSD drives on the market. In a few years, SSD drives have  produced numerous brands, but few brands can meet the needs of consumers.  Generally speaking, we can choose a big brand. As for particles, the solid-state  hard disk uses NADA flash memory particles. At present, there are three types:  MLC multi-layer unit, TLC three-layer unit and SLC single-layer unit. SLC is  better than MLC, MLC is better than TLC, and TLC is better than the latest QLC.
  
  Despite its high technical threshold, solid-state hard  disk has a simple structure, which is mainly composed of host, PCB and Flash  particles. Among them, the cost of flash memory particles is the highest, which  causes small brands to choose cheap white and black particles in order to  reduce the purchase cost of flash memory particles. If your computer often  stores important data, it is recommended that you buy a solid-state hard disk  manufacturer with the ability to produce flash particles independently when  buying a solid-state hard disk.
  
  Then, looking 4K random writing and reading speed.We know  that the speed of continuous reading and writing is the speed of continuous  reading and writing a file. When copying large files, the advantage is most  obvious. If large files are not copied frequently, no matter what the speed of  continuous reading and writing is, there is no big difference. Random  read-write speed or 4K read-write speed is different, because when reading  files on disk, it is usually random. For example, when reading and writing  records, 4K random read-write speed is to read or write random data, which can  reflect the real performance of SSD solid-state hard disk.
  
  Lastly, demand should be equal to capacity. It is right  that the larger the capacity of SSD is better. But if you use more SSD, it's a  waste. After all, SSD is relatively expensive, but less is troublesome.  Therefore, before choosing and purchasing, we should make clear our storage requirements.  For example, if you just want to install the system, 120 GB is enough. If you  want to use it as a storage disk, it usually starts at 250GB. Of course, if you  want to store a large number of movies or games, at least 1 TB, but the price  is more expensive.