Crystal Disk Benchmark is used to measure read and write performance through sampling of random data which is, for the most part, incompressible. Performance is virtually identical, regardless of data sample so we have included only that using random data samples.
Performance is just below listed specs which is nothing to worry about but let’s take a closer look at the low 4k write performance of 39MB/s. If you are familiar with SSDs, you would know that we are seeing performance up around the 140MB/s mark these days, at least when we are looking at system SSDs that are connected to the PC via SATA or even PCIe.
External SSDs are significantly lower and all are similar to this because of the mechanics of being a USB3.0 connection. Where internal SSDs are intended to run operating systems, the low 4K write is very important, whereas, when we look at external SSDs that are typically used for the transfer and storage of large files, the random performance is less important and high sequential performance is prefered.
The toughest benchmark available for solid state drives is AS SSD as it relies solely on incompressible data samples when testing performance. For the most part, AS SSD tests can be considered the ‘worst case scenario’ in obtaining data transfer speeds and many enthusiasts like AS SSD for their needs. Transfer speeds are displayed on the left with IOPS results on the right.
Understanding that AS SSD is a program that is created for system SSDs, it is understandable that we would see lower performance with this benchmark. I high of 32K IOPS was actually a pleasant surprise for the T1.
ANVIL STORAGE UTILITIES PROFESSIONAL
Anvil’s Storage Utilities (ASU) are the most complete test bed available for the solid state drive today. The benchmark displays test results for, not only throughput but also, IOPS and Disk Access Times. Not only does it have a preset SSD benchmark, but also, it has included such things as endurance testing and threaded I/O read, write and mixed tests, all of which are very simple to understand and use in our benchmark testing.
Anvil Storaghe Utilities also confirms much of what we are seeing, providing additional data such as disk access times (Resp. Time) which are actually much better than we might expect for an external solid state drive.
OSX PERFORMANCE BENCHMARK
As the Samsung Portable SSD T1 is fully compatible with both PC and Mac systems, we thought it important to get a benchmark in with performance as shown on our 2013 MBA:
As we can see with QuickBench 4.0, performance for the Samsung Portable SSD T1 remains above 400MB/s for both read and write data transfers.
TRUE TRANSFER COMPARISON
In the chart below, we compared the 1TB Samsung Portable SSD T1 (UASP) against our 1TB Monster OverDrive 3.0 (USB3.0) and then threw in our OS SSD, the Intel 730 (SATA) for good measure. The sample files were 3GB of music, 3GB of pictures and 10GB of HD movies and the speed was measured by transferring the data to the external device from the OS SSD, or to a separate folder in the case of the system disk Intel 730.
As much as we can identify that the system disk (Intel 730) is still top dog as it has true SATA 3 speeds, the Samsung Portable SSD T1 displayed some pretty impress transfer speeds, almost bettering the system disk in moving video files. Conversely, we can clearly identify the difference between USB 3.0 and UASP when comparing the T1 to the Monster OverDrive which was much slower.