Say I have a long time for a long time without SATA interface SSD, the reason is very simple, now PCIE NVMe master M.2 interface SSD price is not expensive, performance is tough, throw SATA master SSD few streets, so I buy new SSDs did not consider the SATA interface products. The M.2 SSD, a Huirong SM2258 controller + Micron TLC 3D-NAND chip, was recently launched. Although it is a SATA master, its performance is very good. At the time, I wondered if it would be the spark of SM2258 master + MLC 3D-NAND particles. The new AMD SX950 solid state drive is using the SM2258 master + MLC 3D-NAND particle program, so start with a speed to play. The SX950 240G is priced at RMB 899 on JD.com and Tmall. It is definitely not worthwhile to start with a SATA-hosted 240G SSD. The new listing price will be a lot higher. A few days ago to go to the store and found that actually there are goods, and the offer was only 799 yuan, a knife, 790 won. So, buying things now is not necessarily a cheap shop. If you have time, you can also look at a physical store. Not long ago, I bought a steamer, the cost-effective price of 300 yuan more expensive than a physical store.
A-DATA XPG SX930/950 Solid State Drive 120G/240G/480G/MLC/Desktop Notebook SSD899 Yuan Tmall Select Direct Link 
★ Now M.2 is so hot, buy SSD I should choose M.2 interface or SATA interface products ★
Since the listing of the Z87 main board, many first-tier manufacturers have begun to hype M.2 interfaces. Until the intel 100 series motherboard became mainstream, M.2 interface has almost become the standard on the motherboard. Many users are confused, and see that all manufacturers are promoting the M.2 interface quickly and quickly. So when buying an SSD, should I choose the M.2 interface or the SATA interface?
In fact, M.2 is just an interface representation, just like USB 3.1 which was recently fired like M.2. It can be used as a TYPE-C interface, or as a TYPE-A interface, but if If you received only a USB 3.0 standard mobile hard disk on the USB 3.1 interface, then the maximum speed will not exceed the USB 3.0 limit. Currently, there are two kinds of SSD products for M.2 interfaces. One is to use PCIE master control, and the other is to use SATA master control. If you use a SATA master product, then the performance will not exceed the SSD of other SATA interfaces, or it can be said that this is actually a SATA SSD dressed up as an M.2 interface. How do I know if an SSD is using a PCIE master or a SATA master? My suggestion is to look at the online evaluation before purchasing. Generally, the model and characteristics of the main control chip will be introduced. If you want to be more secure, you can query the model of the main control chip and you can generally obtain the main control. All kinds of accurate information.
(Hui Rong SMI's official website has master's detailed information, for example, SM2260 indicates that it is a PCIE master)
(SM2258 is a SATA master)
The M.2 interface on the motherboard may not always be able to support PCIE-hosted SSDs. Therefore, it is best to use the motherboard's instructions as the standard, so as to avoid buying an SSD, you cannot use it.
Remember, if it is a SATA master SSD, whether it is using SATA interface or M.2 interface, its performance is broken day is SATA level. For SATA-hosted SSDs, if there is no special requirement, I suggest that it is more cost-effective to purchase SATA interfaces. Because the same model has the same capacity, the SATA interface is generally cheaper than the M.2 interface. If the M.2 interface model of an SSD product and the model of the SATA interface have the same price under the same capacity, the M.2 interface can also be considered. Because the size is smaller, the SATA data cable and the power cable can also be omitted.
★ Unpacking and Chip Introduction★
Do not talk nonsense, first come out of the box. The color of the box of SX950 240G is also adopted the new color style of A-DATA, which is brownish red. It is deeper than the classic purple color, and it looks a lot of high-grade. Packaging this kind of thing, a long time will be aesthetic fatigue, so changing the packaging style across time is a very good marketing tool.
The top right corner of the box indicates that this SSD uses 3D NAND particles and has a 6-year warranty. Nowadays, there are many SSDs using 3D NAND particles. However, if you simply write 3D NAND, you cannot see whether it is MLC or TLC. The lower left corner of the box indicates that the SX950 belongs to the GAMING series of SSDs. The theoretical maximum continuous reading speed is 560MB/s, and the highest theoretical continuous writing speed is 520MB/s. Now the game has become DIY's life-saving straw, so regardless of the motherboard, video cards are engaged in GAMING series, and now even SSD is also working hard and GAMING pull relations.
The accessories of the SX950 are quite numerous, there are SSD "growers", can increase the thickness of the SSD, there are 1.8 inch to 2.5 inch adapter, so that this 1.8-inch, 7mm thickness SSD can be suitable for more types of installation Bit. The instruction manual also provides the download address of the bonus software. After the product serial number is registered on Avision's website, it can obtain the corresponding software download, which is a good user welfare.
The shell of the SX950 is rather special. The top cover is made of plastic and the bottom is made of metal. The shell is fixed with snaps, but there is a fixed screw under the sticker label. The PCB size is only half the size of the enclosure and is a "half-height" PCB, which follows the consistent green style of the Evergreen solution. Today's chip integration is getting higher and higher, and products are getting smaller and smaller. The front of the PCB is a master chip + two NAND particles + a cache particle, and the back of the PCB is a sticker sticker + two NAND particles. A total of four NAND-particle air-solder locations are left on both sides of the PCB, so the 480-Gbyte version requires only four NAND particles on the PCB.
The master chip of the SX950 is the SM2258G of Huirong SMI. This mastermind is already very familiar with it and is currently being used on many TLC SSDs. The SM2258 and the SM2256 are four-channel designs and 32CEs (8CEs per channel). They also support the NANDXtend ECC technology (known as “more than three times the durability of TLC SSDsâ€) and can be reduced with new optimization algorithms. The rate of speed drop after SLC Cache space is consumed). SM2258 and SM2256 have independent SRAM, ROM and other units, support ONFI 3.0, Toggle 2.0 and asynchronous NAND, support AES 128/256, TCG Opal encryption, support for LDPC ECC (low density parity check) error correction algorithm, support DevSleep power saving mode. The SM2258 master can support a variety of MLC, TLC particles, and 3D-NAND particles in the 1x/1y/1z nanometer process. Before SM2258 mastering appeared in our sights are with TLC particles, such as intel 540S and Jianxing Core V5, as well as with TLC 3D-NAND particles, such as Aegis SU800, with MCL 3D-NAND particles is my first time See, so I was interested in playing to see what the actual performance was.
Flash particles used in the SX950 were polished on ADATA's own LOGO and number. According to the information from the roadside, it should be Micron's 3D-NAND MLC particles, with a single capacity of 64GB. The front and back sides of the PCB consist of four 256GB components. The total capacity, draws out 16GB as OP redundant space, the actual available space is 240G.
The cache is composed of a single South Asian cache, numbered NT5CC128M16IP-DI. From the point of view of numbers, it is a DDR3L-1600 particle with CL=11 and a single capacity of 256MB.
I've already played with the Lite-On V5, Intel 540S, and A-DATA SU800 that also used the SM2258 controller. This time it was to see how much better Micron's 3D-NAND MLC particles were than the TLC.
★ Performance Test ★
Here's how to measure the actual performance of A-DATA SX950 240G.
First, the theoretical performance test
The first is still the usual five tests for SSD: AS SSD Benchmark, CrystalDisk Mark, Anvil's Storage Utilities, ATTO Disk Benchmark, and TxBENCH. All five softwares can test the maximum sustained read/write speed of SSDs, AS SSD Benchmark can measure random 4K read/write speeds under QD64, Crystal Disk Mark and TxBENCH can measure random 4K read/write speeds under QD32, and Anvil's Storage Utilities can measure them. Random 4K read/write speeds for QD4 and QD16. The advantage of these five softwares is that the test takes a short time and the test data has a certain reference value, so that the user can have a general understanding of the basic performance of the SSD. However, the test data volume of the five software under the default parameters is within 1G, so there is not a small gap between the test conclusion and the actual application, and it can not fully reflect the actual comprehensive performance of an SSD.
Comparison of test results summary:
In the AS SSD Benchmark test, the A-DATA SX950 240G scored 1052 points, Anvil's Storage Utilities scored 4571.75 points, the scores of these two can only be said to be more general, in the SATA interface SSD can only be considered medium level. In the previous tests, I have discovered that the features of the Huirong SMI SM2258 master are that the random 4K read speed is relatively common, but the random 4K write performance is very strong, and the A-DATA SX950 also shows such characteristics. However, the AS SSD Benchmark has always been the weakness of Hui Rong’s main control, so the score of the SX950 is not as good as expected.
Second, simulate the actual use of environmental performance testing
PCMARK8 is currently the closest to the actual use of the environment of the simulation test software, which storage storage device testing is subdivided into games, office, graphics processing and other sub-projects, its test data volume close to 50G, the test strength is much higher than the previous Several younger brothers test the software, so the test results of PCMARK8 can reflect the actual performance of SSDs in the home, games, and general office situations more completely and truly than the test software in the conventional five items. The Aegis SX950 240G's final score was 4987. This score has surpassed the original high-end SATA MLC SSDs of the Plextor M6Pro and OCZ V180. After the Yangtze River pushed forward, the waves were dead on the beach. It can be seen that the performance of A-DATA SX950 is already at the level of high-end SATA MLC SSD. However, the A-DATA SX950 240G's PCMARK8 Storage score is actually slightly lower than the A-DATA SU800 512G by 7 points, although the 7-point difference is within the error range, and the SSD is generally speaking, the larger the capacity, the stronger the performance, so if replaced with 256G capacity For the SU800, the score is estimated to be slightly lower than the SX950. However, this also shows that the performance gap between TLC 3D-NAND and MLC 3D-NAND is very small, and the difference between the two is more reflected in the service life, so the SX950 with MLC 3D-NAND particles has a longer warranty. , reached 6 years.
★ chief life home perspective ★
1. The benefits of A-DATA SX950: The performance is strong, reaching the level of high-end SATA MLC SSD; the theoretical service life is longer than that of TLC 3D-NAND, providing 6-year warranty.
2, A-DATA SX950's shortcomings: high prices.
Currently, the overall SSD market is big and small, with high-end PCIE NVMe MLC products, high-performance, low-end SATA TLC products, and low-cost and cost-effective. Therefore, SATA MLC products sandwiched in between are not popular at present. Many manufacturers are reducing the production of these SSDs. In the near future, many manufacturers do not have high-end SATA MLC products. However, this part of the product also has its advantages, performance and longevity are significantly better than the low-end SATA TLC SSD, and the price is more affordable than the high-end PCIE NVMe SSD. Since there is no new high-end SATA MLC product, most of the high-end SATA MLC SSDs on the market today are old models, or can be said to be old flagships, such as the Samsung 850 PRO 256G at around 950 yuan, Toshiba Q300 PRO 256G at about 850 yuan, and OCZ. VX500 256G, and classic old flagship products such as Plextor M6Pro and OCZ Vector180 are no longer available. A-DATA launched the SX950 at this time. It was a bit off-season sales. When other manufacturers did not play high-end SATA MLC SSDs, they suddenly launched a SATA-hosted 3D-NAND MLC product to disrupt the game. From a performance point of view, the SX950 is the same as other brands of high-end SATA MLC SSDs, and will be slightly lower in price, so the high-end SATA MLC SSD is more cost-effective. However, the difference between PCIE NVMe SSD with the same capacity is not significant, for example, the difference with the Samsung 960 EVO 250G is about 120 yuan, while the difference with A-DATA's own SX8000 256G is less than 100 yuan. So I think A-DATA is currently pricing the SX950 at a high level, and then it is estimated that prices should be lowered to improve product competitiveness.
My purchase proposal is: As long as the motherboard supports it, users of the Z270, Z170, and B250 motherboards, for example, should purchase the PCIE NVMe master control product when purchasing SSDs. Performance does not really have to be said. If your motherboard does not support NVMe, or if your motherboard M.2 interface can only support SATA master SSDs, then buying PCIE NVMe products will not make much sense. In this case, you can buy SATA interface SSDs. More cost-effective.
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