Top critical review
68 people found this helpful
Good for large files, very painful for small files
on 18 July 2013
The main reason for buying an SSD is it's vast speed over a traditional magnetic disk when it comes to reading a vast amount of small files. It's also much faster when it comes to reading/writing from random locations and does not suffer from fragmentation of files.
Consider a normal western digital, magnetic, portable disk: [Source: [...]
Here are it's speeds:
Sequential Read : 115 MB/s (Example - reading a large movie from the disk)
Sequential Write : 114 MB/s (Example - writing a large movie to the disk)
Random Read 512KB : 43.5 MB/s (Example - reading a lot of small documents to the disk)
Random Write 512KB : 62.3 MB/s (Example - copying a lot of small documents to the disk)
Random Read 4KB (QD=1) : 0.574 MB/s (Example - copying many small files, working with virtual machines, development)
Random Write 4KB (QD=1) : 1.558MB/s
Random Read 4KB (QD=32) : 0.574 MB/s
Random Write 4KB (QD=32) : 1.540 MB/s
You will notice that the smaller the writes get, the slower the speeds. This is because the magnetic disk has to rotate for the computer to be able to read or write to the correct location, making writing small files very slow.
SSDs however, do not have this problem - because they have no moving parts.
For example, let's consider a Samsung 830 SSD:
Sequential Read : 505.548 MB/s
Sequential Write : 333.835 MB/s
Random Read 512KB : 357.251 MB/s
Random Write 512KB : 269.486 MB/s
Random Read 4KB (QD=1) : 24.596 MB/s
Random Write 4KB (QD=1) : 69.833 MB/s
Random Read 4KB (QD=32) : 300.302 MB/s
Random Write 4KB (QD=32) : 90.798 MB/s
This is why an SSD shines. With such limited space, I couldn't care less about copying very large files. I need an SSD to get good performance when when copying a VAST ammount of documents and small files, or when booting an operating system from it, or when using virtual machines.
Now, here is the benchmark for this portable SSD:
Sequential Read : 250.113 MB/s
Sequential Write : 43.128 MB/s
Random Read 512KB : 211.588 MB/s
Random Write 512KB : 35.951 MB/s
Random Read 4KB (QD=1) : 9.741 MB/s
Random Write 4KB (QD=1) : ------>>>>>> 1.039 MB/s <<<<<------
Random Read 4KB (QD=32) : 10.104 MB/s
Random Write 4KB (QD=32) : 1.210 MB/s
I'm giving this product a one star because it's a plain ripoff. Writing small files is SO SLOW that it's hardly even usable. It's USB controller is so poor that it cannot handle decent read and write speeds with small files, which is what I needed it for. Complete waste of money for me, and sorely disappointed. I will update my review if there is a workaround, but I have enabled caching in windows and tweaked other settings with no luck.
- 5 star: Extremely slow for small files
+ 1 star: Good form factor (small) and fast for large files
You can get a normal USB 3.0 hard drive which is twice as fast as this one when writing large files (and half as fast when reading large files) with the same speeds when it comes to small files. Oh, and the magnetic drive has four times the space at a cheaper price compared to this one. It's such a disappointment that an HDD can compete with this SSD.