TSSDR TEST BENCH AND PROTOCOL
SSD Testing at TSSDR differs slightly depending on whether we are looking at consumer or enterprise SSDs. For consumer SSDs, our goal is to test in a system that has been optimized with our SSD Optimization Guide, although CPU C States have not been changed at all. Benchmarks for consumer testing are also benchmarks with a fresh drive so, not only can we verify that manufacturer specifications are in line but also, so the consumer can replicate our tests to confirm that they have an SSD that is top-notch. We even provide links to most of the benchmarks used in the report.
This Test Bench build was the result of some great relationships and purchase; our appreciation goes to the below mentioned manufacturers for their support in our project. Our choice of components is very narrow, in that, we choose only what we believe to be among the best available and links are provided to each that will assist in hardware pricing and availability, should the reader be interested in purchase.
|PC CHASSIS:||InWin D-Frame Open Air Chassis|
|MOTHERBOARD:||ASRock Z87 Extreme11/ac EATX MotherBoard|
|CPU:||Intel Core i7-4770K Haswell 3.5GHz Quad Core|
|CPU COOLER:||Corsair H100 High Performance Liquid|
|POWER SUPPLY:||be quiet Dark Power Pro 10 1000W PSU|
|SYSTEM COOLING:||be quiet Silent Wings 2 PC Fans|
|GRAPHICS CARD:||EVGA GTX 770 Superclocked with ACX Cooler|
|MEMORY:||Crucial Ballistix Sport DDR3-1600Mhz Memory|
|KEYBOARD:||Corsair Vengeance K95 Mechanical Gaming Keyboard|
|MOUSE:||Corsair Vengeance M95 MMO/RTS Laser Mouse|
|ROUTER:||NetGear R6300 AC1750 Dual Band Gigabit WiFi Router|
|HBA||HighPoint RocketU 1144C 4 x USB 3.0 20Gb/s HBA|
The software we will be using for today’s analysis consists of ATTO Disk Benchmark and Crystal DiskMark, for the most part, as we are using this report to demonstrate the difference in cached vs non-cached SSD performance. Stay tuned as we provide a complete review of the MyDigitalSSD Super Cache 2 in the near future.
Crystal Disk Info provides some excellent information about the SSD itself to include its health, product information, ‘power on’ information as well as the characteristics of the SSD. We can see that the SSD is capable of TRIM as it is not grayed out as with AAM.
Something we found a bit odd was that the SSD is actually listed as a 240GB SSD, with the available capacity available to the user being 223GB. Typically with a 256GB SSD, the available capacity might be 238GB, leading us to believe this SSD includes 7% over provisioning.
ATTO Disk Benchmark is perhaps one of the oldest benchmarks going and is definitely the main staple for manufacturer performance specifications. ATTO uses RAW or compressible data and, for our benchmarks, we use a set length of 256mb and test both the read and write performance of various transfer sizes ranging from 0.5 to 8192kb. Manufacturers prefer this method of testing as it deals with raw (compressible) data rather than random (includes incompressible data) which, although more realistic, results in lower performance results.
We were very impressed with these ATTO results, even considering that ATTO uses highly compressible data samples for testing. It isn’t so much the speeds that impress us as it is the fact that we hit high SATA 3 performance right at the 8K file size and it remained solid throughout. These are excellent results.
Crystal Disk Benchmark is used to measure read and write performance through sampling of highly compressible data (oFill/1Fill), or random data which is, for the most part, incompressible.
As we are now testing in highly incompressible data, the performance is expected to be a bit lower, however, these results are still very good considering that we are using a mid-level SATA 3 controller and USB 3.0.