Samsung SSD 990 Pro 4TB Review: Big, Fast Storage For PCs And PS5
Our latency results also show that the Samsung SSD 990 Pro offers some of the lowest (best) latency in the lowest queues. Only at the highest queue depth (QD16) did the 990 Pro's latency trail the ADATA XPG Gammix S70, but the difference was smaller.
Next we use SiSoft SANDRA, a system analyzer , diagnostic and reporting wizard for some quick tests. Here we use a file system test and provide SSD comparison results. The read and write performance metrics and overall drive rating are detailed below.
The Samsung 990 Pro 4TB SSD dominated the other PCIe Gen 4 SSDs we've tested here and is well behind some of the latest PCIe Gen 5 drives, especially the Crucial T700, which is currently one of the fastest drives on the market .
Album rating ATTO
ATTO is another type of "quick and dirty" disk test that measures data transfer speed over a specific volume length. Measure raw read and write data rates and display them in an easy-to-interpret graph. We selected transfer sizes from 0.5 KB to 64 MB and a queue depth of 6 out of a maximum total volume length of 256 MB. ATTO workloads are sequential in nature and measure raw throughput rather than I/O response time, access latency, etc.
Among PCIe Gen 4 drives, the Samsung SSD 990 Pro 4TB demonstrates the best performance in the ATTO Disk Benchmark test. However, the latest PCIe Gen 5 drives offer much better performance here, at least from a sequential data transfer perspective.
I/O performance is generally consistent across all drives tested in the read test, but the Samsung SSD 990 Pro drives delivered the fastest performance with the smallest transfer volume in the write test.
AS SSD compression test
We then ran the built-in AS SSD compression test, an SSD benchmark developed by Alex Intelligent Software. This test is interesting because it uses a combination of compressible and incompressible data and determines the read and write performance of the disk. We only plotted a small portion of the data (1% compressibility, 50% compressibility, and 100% compressibility), but the trend reflects the full test results.
