AS SSD
The AS SSD software determines the performance of Solid State Drives (SSD). The tool contains five synthetic and three practice tests. The synthetic tests determine the sequential and random read and write performance of the SSD. These tests are performed without using the operating system caches. In Sequential tests, the program measures the time it takes to read and write a 1 GB file respectively. To give a clearer picture of the drives tested, I’ve chosen to include all tests. Special the copy test is one that I think is relevant on the consumer level as it gives the user a view into one of the operations he’s going to do many times.
Basic and Copy Tests
Compression
Drive Performance Analysis
The drive performance analysis chart will give you a look at the drives performance at varying degrees of fillage.
Drive Comparison
For the purpose of drive comparison, I will be using the performance figures from the tests with 0% data-fill.
I haven’t noticed tests of writing a large amount of data (many GB). Maybe I just missed it. My Sandisk USB disk writes about 80MB/s for the first 1GB or so, but if there’s more data to write, speed drops to 20MB/s (as measured by Windows when copying to the drive). Presumably it has a fast buffer of a certain size. That’s why when flash storage is reviewed I want to see results of writing a larger amount of data. It’s easy to cater to benchmarks with a buffer, but if sustained write is a lot slower, that’s a problem for real world use.