Lexar SL100 Pro 1TB Portable SSD Review

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Test System and Benchmark Results

We are using an AMD X570 platform to test storage drives and custom built a system that we consider mainstream for consumers. The goal here is to have a system that relates to the average Do-It-Yourself (DIY) builder, gamer or enthusiast as we want the benchmark results to mean something. To power the system we picked the AMD Ryzen 5 3600X 6-core, 12-thread processor as it along with the Ryzen 5 3600 are hands down two of the best selling 3rd Gen Ryzen CPUs. The AMD Ryzen 5 3600X runs $204.99 shipped and the Ryzen 5 3600 is $174.99 shipped. We went with the ASUS TUF Gaming X570-Plus (Wi-Fi) motherboard ($183.99 shipped) and the ASUS ROG STRIX Gaming Radeon RX 5600 XT graphics card ($339.99 shipped). DRAM needs are fulfilled by a 16GB DDR4-3600 kit of Corsair Dominator Platinum RGB memory ($159.99 shipped) and a Corsair RM750 power supply ($119.99 shipped) powers the system. All that was placed into the Corsair iCUE 465X RGB Black case ($129.99 shipped) without issue. We went with the compact Corsair K63 mechanical keyboard ($73.99 shipped) to keep the lab bench as open as possible and the M65 RGB Elite gaming mouse ($39.99 shipped).

The total build cost is around $1,250 and that seems like a fair price for a system of this caliber and it should also look good thanks to RGB everything.

New 2020 SSD Test System

A clean install of Windows 10 Pro v1909 (build 18363.657) was installed from the latest ISO we applied all Microsoft Windows updates and drivers. We did this on February 10th, 2020, so it has all the latest patches up to that point. The ASUS TUF Gaming X570-Plus (Wi-Fi) motherboard was running UEFI 1405 (AGESA and the DRAM was set to 3600 MHz with CL18 timings. The Infinity Fabric clock speed (FCLK) is configurable on this platform and directly relates to the memory clock (MCLK), so it was set to run a 1:1 speeds or 1800 MHz in this situation.

AMD X570 Settings

We benchmark portable storage drives as empty secondary drives on this system using standard benchmarks that you can easily find online.

Lexar SL100 Pro CrystalDiskMark

The most popular benchmark right now for storage devices is CrystalDiskMark, so that is a must to run for all storage drive reviews. On the Lexar Professional SL100 1TB portable SSD we topped out at 1,000 MB/s sequential read an 850 MB/s sequential write on the peak performance test. At a queue depth of just one the same transfer test topped out at 867 MB/s read and 733 MB/s write. Not bad file transfer speeds, but that is the top score from five runs on a relatively small file size of 1GB by default.

AJA Storage Test Lexar SL100 Pro Portable SSD

To give a little more of a real-world look at performance we ran the AJA System Disk Test with a 16GB test file set to 4K UltraHD (3840×2160) resolution. This test showed file transfer speeds that averaged 800 MB/s read and 530 MB/s write. This is the average speed and not the top speed. Notice that the drive write speed started out close to 888 MB/s, but drops down significantly when the drives cache is filled.

Another popular free benchmark that we like to run is AS SSD Benchmark and it shows speeds of 939 MB/s read and 780 MB/s write on the Lexar Professional SL100 Pro 1TB drive with the standard test settings with a 1GB file size.

The AS SSD Copy-Benchmark results shows file copy speeds for three different file types. The results here show speeds ranging between 126 MB/s to 517 MB/s when writing common file types to the Lexar SL100 Pro 1TB portable SSD.

Lexar SL100 Pro 1TB Portable SSD


Final Thoughts on the Lexar Professional SL100 Pro Portable SSD

When you type in ‘portable SSD 1TB’ into Amazon over 150 product results come back. Finding the right portable drive can be a chore, but thankfully there are many drives available from known brands like Lexar. This is our first time using a product from the Lexar, an affiliate of Longsys, a Chinese company. Our overall thoughts on the Lexar Professional SL100 Pro are positive. The brushed aluminum case should be durable and it looks great. It also comes backed by a 3-year warranty and includes two types of USB cables to ensure you are able to use the drive on a wide varitey of computers.

On the performance front, the SL100 Pro came close to reaching its rated speeds of up to 950MB/s read and 900MB/s write as we managed to hit 1,000 MB/s read and 850 MB/s write in CrystalDiskMark. When it comes to moving very large files around you are looking at speeds of around 450 MB/s once the cache starts to fill. If you are writing a ton of data to the drive without any time allowed for recovery, you are looking at write speeds down around 180 MB/s, but that is only in worst case scenarios where you are moving around hundreds of gigabytes of data. That is something people seldom do and many may never move around files like that. Then again, Lexar is showing this as the ideal extended storage device for 4K videos and as a gaming drive. Some game titles are over 100GB now, but once the game it should open much faster than a traditional hard drive. This drive will work on video gaming consoles and gaming PCs.

Pricing right now runs $99.99 shipped for the 500GB model (LSL100P-500RB) and $179.00 shipped for the 1TB model (LSL100P-1TRB) that we performance tested. That pricing puts it slightly higher than the SanDisk 1TB Extreme Portable External SSD ($169.68) & Samsung T5 Portable SSD 1TB ($173.65) that are capable of reaching speeds of up to 550 MB/s. Those two models have slower speed ratings because they are SATA SSD to USB drives whereas the Lexar SL100 Pro is an NVMe SSD to USB drive. All the mentioned models are backed by a 3-year warranty. If you move around a bunch of small files the SL100 Pro will give you a great user experience that is superior to the SATA based competitors at this price point!

LR Recommended Award


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