The test system used in this review is equipped with an AMD Ryzen 3 3100 CPU, MSI B550 GAMING PLUS motherboard, 16GB (8GB x 2) of Crucial Ballistix 3200 MHz DDR4 memory, Crucial P5 1TB SSD and a GIGABYTE GeForce GTX 1060 WINDFORCE OC 6G graphics card. For the operating system, I used the latest version of Windows 10 Pro.

To test the performance of Silicon Power's US70 SSD, I ran a series of benchmarks using CrystalDiskMark, HD Tach RW, ATTO Disk Benchmark, AS SSD, HD Tune Pro, Anvil's Storage Utilities, Iometer and PCMark. For comparison, I've also included test results from the ADATA XPG GAMMIX S50 Lite, Silicon-Power UD70, Crucial P2, Samsung's 980 PRO, SK hynix Gold P31, Crucial P5, ADATA SWORDFISH, ADATA FALCON, Lexar NM610, Silicon Power P34A60, Patriot P300, Plextor M9PG Plus, Plextor M9PY Plus, ADATA XPG SX6000 Pro, Western Digital WD Black SN750, Samsung 970 EVO Plus, ADATA XPG SX8200 Pro, Crucial P1, ADATA XPG SX8200, Western Digital WD Black NVMe, Samsung 970 EVO, Samsung 970 PRO, Plextor M9Pe, Plextor M8Se, Patriot Hellfire, ADATA XPG SX8000, Samsung 960 PRO, Toshiba OCZ RD400, Samsung 950 PRO, Samsung 870 QVO, Silicon Power P60, SK hynix Gold S31, ADATA Ultimate SU750, Samsung 860 QVO, Samsung 860 PRO and Crucial MX500.

As I mentioned earlier, the UD70 uses Phison's PS5016-E16 controller chip. Looking at the screenshot above, you can see that there is a slight difference in performance when reading incompressible (0%) and compressible (100%) data.

CrystalDiskMark 7.0.0:

First, I ran a few quick tests using CrystalDiskMark. This benchmark measures the performance of a storage device by testing its sequential and random read and write speeds. For this test, we're using the peak and real world profiles.

According to Silicon Power, the 1TB version of the US70 is capable of reading at 5,000 MB/s and writing at 4,400 MB/s. While the drive had no problems reaching its rated read speed, it came up short in CrystalDiskMark's sequential write speed test.

As you'd expect, the US70 wasn't as fast when tested with the "real world" profile which uses a single thread and a much lower queue depth. Nevertheless, it was still able to read at 3,220 MB/s and write at more than 4,200 MB/s.

HD Tach RW

Next, I used HD Tach to test the US70's read, write and burst speeds as well as its random access time and CPU usage.

Looking at the screenshot above, you can see that the US70 had average read and write speeds of 2538.3 MB/s and 2420.0 MB/s respectively, as well as a burst speed of 2837.1 MB/s.

ATTO Disk Benchmark 4.01:

I also used ATTO Disk Benchmark to test the US70's sequential read and write speeds. The tests are run using blocks ranging in size from 512B to 64 MB and the total length set to 256MB.

Silicon Power US70 1TB
Samsung 980 PRO 500GB

When tested with ATTO, the US70's read speeds topped out at about 5.26 GB/s and its write speeds at 3.96 GB/s.