Silicon Power US70 NVMe SSD review: Surprisingly good real-world performance

The US70 is our first look at a Silicon Power SSD, and we liked the view. It’s not a top-tier drive, but it’s not priced like it either, and our 2TB review unit turned some nice test scores. This drive is a solid value.

This review is part of our ongoing roundup of the best SSDs. Go there for information on competing products and how we tested them.

Design and features

The US70 is a mid-priced SSD in the usual 22mm-wide, 80mm-long, M.2 physical format. The connector is M.2, and it supports the PCIe 4.x that’s common on AMD systems and some newer Intel laptops and motherboards. The NAND is 96-layer TLC; up to a third will be treated as SLC for caching. There’s also 1GB of DRAM for every 1TB of capacity. The controller on the 2TB unit we tested is a Phison E16.

Silicon Power

Silicon Power’s retail box for the 2TB version of the US70 PCIe 4.x NVMe SSD.

The US70 was available at the time of this writing in two capacities: 1TB ($175 on Amazon) and the 2TB we tested ($320 on Amazon). The warranty period is five years, and the TBW (TeraBytes Written over the life of the drive) ratings are an extremely generous 1,800 for every 1TB of capacity. 

What’s not guaranteed is that the SSD components will remain the same over time. Silicon Power retains the right to switch these as needs be, with the proviso that performance will meet what the company specifies in advertising. While this practice is common, some companies fall short in maintaining performance levels, as the story referenced above explains.  


The US70 we tested is a very good performer—not record-setting, but fast enough for most users. Via PCIe 4 it actually bested the zippy Seagate FireCuda 520 in sequential throughput. 

silicon power us70 cdm 6 IDG

The US70 turned in a fast performance under CrystalDiskMark 6. Longer bars are better.

It did quite well in our real-world 48GB transfers as well, though not on a par with the Samsung 980 Pro. Then again, the US70 is hardly alone in that regard. 

silicon power us70 48gb IDG

The US70 couldn’t match the Samsung 980 Pro in our real world transfers, but few drives do. 

As a great deal of the difference between top-tier and lesser SSDs these days is in the queued, threaded small file performance, from here on in we’ll be including the CrystalDiskMark 4K numbers. As you can see below, the pricier drives come alive when more than one thread is involved. 

silicon power us70 cdm 6 4k IDG

You can see here why you pay more for SSDs such as the Samsung 980 Pro and Seagate FireCuda 520. But that doesn’t make the US70 a dog, just a mid-range drive. Longer bars are better. 

Our 450GB write test is simply to see how much secondary cache is allotted. When drives run out, this number will get longer in a hurry. We’ve seen as high as 17 or 18 minutes on some cheap NVMe SSDs. 

#Silicon #Power #US70 #NVMe #SSD #review #Surprisingly #good #realworld #performance

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