Espeon 250GB Portable SSD Solid State USB Drive, USB 3.2 Gen2 UASP SuperSpeed+. Up to 600MB/s Read, 260MB/s Write - SS+

台湾製USBドライブ型SSD。 見た目もコンパクトなサイズ感もUSBフラッシュメモリですが、速さが断然違います。 中身はSSD、容量は250GBあります。 プラグもUSB 3.2 Gen2ということで、転送速度は最大10Gbps(1250MB/s)ですが、SATA 3.0の理論値が600MB/sということになります。 PCで使ってみましたが、やはりUSBフラッシュメモリとは断然違いますね。 シーケンシャルの書き込み実測値は表記よりも速かったです。 容量も250GBと、一般のUSBフラッシュメモリよりもかなり大きいので、大きなファイルや大量のファイルをコピーするのに向いていると思います。 本体は樹脂製なので軽いです。

SSD＋ケースで買うよりも、ケース分安く付くので 最初から外付け目的ならば安くつきます。 今のところ映像データの保存でも、USBメモリに比べて早くなっている。 今後の読み書きを繰り返した後も、高速処理に期待したい。

The USB stick comes in a basic display card and is easily cut open with scissors. The white shell of the drive feels like a very cheap plastic, which does not lend a premium feel to this USB drive. It has a cap that pops off with just the right amount of force, neither difficult to pull off nor am I worried itll accidentally come off. The USB interface is securely mounted, as theres no wiggle between it and the plastic housing (something Ive seen on cheaper USB sticks). After plugging it into my computer, I was pleasantly surprised to find my system reported that this 250GB drive actually has the advertised capacity (250.06GB), as usually manufacturers overstate the available capacity. I gave it a fresh format in exFAT so itll work in both my Mac and my PC, and ran it through Blackmagics Disk Speed Test Tool, selecting the 5GB option. Now this drive really surprised me, as its advertised at 260 MB/s write speed and up to 600 MB/s read. The Blackmagic test, however, showed it far exceeding the advertised write speed, hitting 583.5 MB/s. More than double the speed! Write speed was more in line with the advertised speeds, hitting 542.1 MB/s. Now, most drives can handle smaller transfers like that quickly, but the real test is if they bottleneck on larger transfers, as the faster cache gets filled and the actual flash memory speed becomes the limiting factor. Also, the number of files can affect transfer speeds, as many small files will take longer than one large file (of the same total size) due to inefficiencies. To test this, I made several transfers to/from the drive of various sizes and file counts. I made sure to give the drive a break between each test so heat buildup wouldnt affect the times. I was timing off my stopwatch, so the times arent extremely precise due to possible variance in my reaction time, but should be pretty close and accurate enough to get the overall picture. If you look at my chart, youll see that both read and write speeds are best under 20GB. I observed that after about 12-13GB, speeds dropped off, likely as the cache got saturated and the drive was forced to slow down and write directly to the flash memory. To test this a little further, I made notes of how many seconds it took to hit 10GB increments with the 45.94GB transfer, and heres the times it hit each marker: 10GB - write 18s, read 20s 20GB - write 50s (+32s), read 50s (+30s) 30GB - write 1m 37s (+47s), read 1m 20s (+30s) 40GB - write 2m 56s (+79s), read 1m 51s (+31s) As you can see, the write speed suffers the most as the transfer gets larger, but the read speed settles in to about 30 seconds per 10GB. I didnt run this test on all the folders, but noticed similar behavior over the course of the larger transfers. For a control subject and to make sure my Macbook SSD drive wasnt a bottleneck (it shouldnt be, as they are way faster than this USB should be), I ran the same file transfers to my Sandisk Extreme SSD (gen 2). As you can see from the chart, it was faster in all scenarios, and significantly faster in a good number of them. This also brings up an important point: at the current $45 price point for the 250GB Espeon, youre paying $0.18 per GB. With the much faster 1TB Sandisk Extreme SSD clocking in at $130, youre only paying $0.13 per GB, a much better value. That said, if you dont want to lay out so much money and want the more portable USB stick form factor, the Epseon USB stick does a pretty admirable job and when writing under 20GB, far exceeds its advertised write speeds, though read speeds fell a little short under all my tests. Overall, Im pretty pleased with the performance of this drive. While it gets fairly warm to the touch under load, I never felt like it was excessively hot. The plastic housing leaves a little to be desired, but Ill take a cheaper shell with good internals over a slow USB drive any day. There are better values if all you care about is speed and drive capacity, but for a USB stick, this one isnt too bad.

My USB-C hub does not have a USB3.2 slot. Therefore, I have connected this using USB3.1 on the MBP. Despite this, I am satisfied with the speed of this small thumbdrive. Using this drive as a time machine for my MacBook, it took around 1 hour and 30 minutes to copy 375GB of data. However, it didnt get too hot. Using USB3.2, I expect a much faster transfer rate. This is a great drive for the price of $80 and is a good choice for everyday use.

I really like this drive. Its pretty small, and even though its plastic it built well. I havent had heat issues, and speeds are good. It comes pre-formatted exFAT, and has 465GB available for use. I ran a benchmark from a USB 3.2 port and will include a screenshot here, but real-world transfer speeds are good with this. Also, USB 3.0 ports work fine too, just a little slower.

本体はプラスチック製ですがほんのり熱くなる程度 キャップはしっかり閉められるので、自然とはずれることはなさそう。 LEDがありアクセス中に赤く光ります。（本体後方） アクセス速度は画像の通りで及第点だと思います。 初期フォーマットはexFATで届いてすぐ使えると思います。 Windowsはもちろんですが M1 MacBookAir OS12.3.1でも問題なく認識、使えてます。 購入選択肢に入ってくる良い製品だと思います。

Use this for my photography trips where I back up my photos on my laptop and then onto this while Im out for temporary redundant storage on the chance something happens to my laptop. The USB does perfect and havent found any issues while making transfers and while doing larger transfers >10 gigabytes, havent seen a noticeable dip in write performance. Love it and keep it at the end of my keychain.

やっぱ速いですね 体感速度 普通のUSBメモリよりかなりHD寄りです 入れた動画再生も全く問題なくできます ただ値段的には普通のUSBメモリの倍ぐらいするんで 何に使うかですね 単に保存したいだけなら そこまで速さいらないし

The listing pictures show you exactly what you get. It looks like a typical USB drive, but its much faster than most and lower cost than other very fast drives. I got the 250 GB version. As I do with most drives, I did the simple best case scenario read and write of a very large file. In this case a 36 GB file. In my picture where the line is fairly consistent all the way, thats read performance and it was actually averaging closer to 450 MB/s early on. At all times it stayed above 400 MB/s. Not up to the 600 MB/s claimed for read speed, but faster than the vast majority of USB thumb drives. The destination drive is a super fast Samsung NVMe drive capable of over 3,000 MB/s in my system, and the port used allows at least 760 MB/s transfers in both directions. So the speed limitation was definitely in this Espeon drive. The write side of the equation is quite interesting, as for quite some time it maintains a speed of about 560 MB/s. Over 20 GB worth at that speed, which suggests that 98+% of usage may see much faster write speeds than the 260 MB/s claimed. There is some sort of memory/cache buffer in the drive that allows the higher speed for a long time before it does drop down to around 260 MB/s as shown in my other picture. On the read performance, you have to consider that it is very common for the smallest size of high speed drives that the performance is not equal to the middle size(s) (If there is a middle size or middle sizes.) and largest size. Since I dont have a 500 GB or 1 TB size of this Espeon to test I have no way of knowing if thats the case. In any event the performance of this USB drive is competitive with the very fast Sandisk here: https://www.amazon.com/gp/product/B01N7QDO7M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 But as of now this drive is $20 less than the Sandisk. Of course Sandisk is very well known and in general very reliable, so you do have to consider that in your price comparison. At just $40 right now the 250 GB version is definitely worth a try.

250GBと書いてあるけど実際232GBだった。