ADATA Technology Ultimate SU900 SSD 1TB ASU900SS-1TM-C
|価格:||￥ 52,800 通常配送無料 詳細|
フルフィルメントby Amazon™というサービスを利用している出品者の商品になります。これらの商品は、Amazonフルフィルメントセンターにて保管・管理され、Amazon.co.jpが商品の梱包、出荷、返品などを代行しています。フルフィルメントby Amazonの商品は、Amazon.co.jp が販売している商品と同様に国内配送料無料(条件あり)やAmazonプライム®の対象になります。
出品者は、フルフィルメント by Amazonを利用することで、Amazonの経験と専門性を出品者のビジネスに活用することができます。 プログラムに関する詳細
Ultimate SU900 SATA 6Gb/s、3D MLC NAND SSD、読込速度560MB/s、書込速度525MB/s、容量1TB
この商品 ADATA Technology Ultimate SU900 SSD 1TB ASU900SS-1TM-C
|価格||￥ 52,800||￥ 17,226||￥ 29,800||￥ 11,980||￥ 57,747||￥ 40,392|
|販売||ヒットライン.||SHOP翔☆お届けまで2〜3週間！米国より迅速発送！安心、丁寧な対応をお約束します☆||まるため商事||chamcommerce||《メディア機器の販売・買取・修理》《貿易商社》⇒株式会社 信用堂JAPAN||Y.T Shop【年中無休】|
|ハードディスク容量||1 TB||256 GB||512 GB||256 GB||960 GB||480 GB|
|外装サイズ||13.2 x 14 x 2.5 cm||13.2 x 14 x 2.5 cm||13.5 x 14 x 2.5 cm||10.4 x 13 x 1.5 cm||11 x 13.5 x 1.5 cm||11 x 13.6 x 0.8 cm|
|外装質量||68 g||91 g||120 g||23 g||80 g||100 g|
|記録容量||1,000 GB||256 GB||512 GB||256 GB||960 GB||480 GB|
I tested the ADATA SP550 SSD on an Intel iCore 7 Haswell system running Fedora 23 with 32G of memory. The Adata SP550 SSD has read speeds that are limited only by the SATA 3 interface (excellent results). It has good but not industry leading write speeds. The manufacturer specifies read speeds of 530 Mbytes/second and write speeds of 480 MBytes/second which I confirmed using two bench marking tools, Gnome Disks and Sys_basher.
I took three sets of measurements with Gnome Disks, a set with a 1 MByte sample size, a set with a 10 MByte sample size and a set with a 100 MByte sample size.
1 Mbyte sample:______407.5 MBytes/second
10 MByte sample:_____525.5 MBytes/second
100 MByte sample:____534.5 MBytes/second
1 Mbyte sample:______230.2 MBytes/second
10 MByte sample:_____359.4 MBytes/second
100 MByte sample:____433.5 MBytes/second
Average Access (latency)
1 MByte sample:______0.13ms
10 MByte sample:_____0.13ms
100 MByte sample:____0.15ms
Another interesting measurement is to measure transfer rates for different file sizes. At small file sizes (less than 256K) the overhead of the operating system has a large impact, as file sizes grow larger the SSD approaches it's maximum transfer rates. Because of the limitations of the SATA 3 bus no SSD has faster read transfers than the ADATA SSD.
' Read performance
' Write performance
I am using this SSD drive for SSD caching using DM-CACHE which is part of Linux logical volume manager. This is a perfect use for SSD because the write do not go to SSD when the files are created, they only go to SSD after a read occurs, which means it is used only for files that I am actually using to make access to them faster. I am seeing a noticable speed up in i/o operations starting with the second time I accessing the same file. The most significant performance number for this purpose is latency and the latency numbers on this drive are also excellent.
I was provided this drive for testing and review as part of the new product introduction. Overall, this is an excellent SSD drive and my tests confirm the benchmarks provided by manufacturer.
Ali Julia review
A quick sample benchmark from CrystalDiskMark results in:
Seq Q32T1 - 277.3 read / 361.2 write
4k Q32T1 - 150.8 read / 151.8 write
Seq - 265.3 read / 244.9 write
4k 23.89 read / 57.65 write
I returned here today (August, '17) to buy a few more and was again surprised, only this time it was from sticker shock. The 2Ds have actually gone up in price rather than down as one would expect. The price of the newer 3D "Style" seems off too, making it more difficult to justify the cost/benefit of upgrading components vs replacing the platform. Therefore, even though I was happy with the drives themselves, I felt compelled to edit my review to reflect their decreased value as a result of the new pricing structure. My former high "5" rating is now a low "3."
However, as some of the other reviewers have pointed out, this SSD drive does suffer from some stuttering once in a while. There are times where the whole computer would just freeze and you can't do anything. It lasts for ~5-10 seconds before resuming normal function. It gets annoying, but it's rare enough that it's still worth that speed boost.
Overall, this isn't a bad SSD, and I got the 128GB one for ~$48 on sale, so I still think it's worth it. It's a shame about the stutters--otherwise, this would be a great SSD.