Strontium Nitro 566X SDXC UHS-1 Card and Nitro 466X Micro SDHC UHS-1 Card Review


Currently, Strontium only has one product line of SD Card flash storage. If you’re looking for the SDXC technology, then the 64GB model will be your product of choice, but Strontium also offers 16 and 32GB SDHC cards to round off their product line. The Strontium Nitro 566X SDXC card has a Class 10 rating, and the 566X speed rating translates into 85MB/s read speed. It is also rated for speed at UHS-1 and has the capability of fast continuous shooting and recording of 1080p HD video for long durations. Strontium notes that with 64GB of storage capacity, the card can hold 16,000 MP3 songs, 26,208 5MP images, 352 hours of MPEG-4 video, or 960 minutes of full HD video.

Strontium has a three tier product line for their Micro SD flash storage: Class 4 rating (8GB capacity), Class 6 rating (16 and 32GB capacities) and Class 10 rating with UHS-1 speeds (16, 32 and 64GB capacities). Again, if you are looking for Micro SDXC, then the 64GB Micro SD card will be your only option. Strontium has guaranteed that the read speeds of the Micro SDHC UHS-1 32GB card will reach 70MB/s, which is an acceptable target with a Class 10 rating and UHS-1 technology.


A primary focus at Technology X is to relate our testing situations and equipment to that of the consumer. All of the components we use for testing and evaluation can be easily purchased at a relatively affordable price. The links provided below can assist in pricing, as well as availability for those of you who may find interest in our equipment.


 PC CHASSIS: Cooler Master CM Strom Stryker Chassis
 CPU: Intel i5-3570K CPU
 CPU COOLER: Corsair H80 CPU Cooler
 POWER SUPPLY: Cooler Master M2 Silent Pro 850W PSU
 SYSTEM COOLING: Cooler Master 3 PC Fans
 MEMORY: Crucial Ballistix Tactical Tracer 1600 MHz
 HBA: HighPoint RocketU 1144C 4 x USB 3.0 20Gb/s


We recruited the help of the Kingston Mobilelite G3 card reader, I encourage you to check out our review of the card reader here. The Kingston Mobilelite is a versatile card reader as it supports SD/SDHC/SDXC, Micro SD/SDHC/SDXC and MSPD. It also features USB 3.0 connectivity, and is backwards compatible to USB 2.0.


ATTO Disk Benchmark is a relatively easy-to-use benchmark tool, which happens to be the benchmark of choice for many manufacturers. ATTO uses compressible data rather than random data, which results in higher performance and thus, higher benchmark scores. In our testing, we have selected the transfer size to range from 0.5KB to 8192KB, and have set the total length of the test to be 256MB.

First up, the Strontium Nitro 566X SDXC 64GB card. As we can see below, the SD card returns read speeds of 94.8 MB/s, which is almost 10 MB/s faster than the speeds listed, and also has write speeds of an impressive 63 MB/s.

Next is the Strontium Nitro 466X Micro SDHC 32GB card. As we can see below, the Micro SD card returns read speeds of 90 MB/s which is 20 MB/s faster than the speeds listed, and also has write speeds of an impressive 23.5 MB/s.

Founded in 2002, Strontium is a relatively new company which specializes in flash memory products. It has been noted that Strontium produces 7,000,000 flash products every month, and here at Technology X we got the opportunity to check out the Strontium Nitro 566X SDXC UHS-1 64GB Card and the Strontium Nitro 466X Micro SDHC UHS-1 32GB Card. Let's take a look at how these two cards stand up to the competition. FEATURES Both the Strontium Nitro SDXC and Micro SDHC cards are resistant to water, temperature, magnetism and x-ray's. Each of these resistance's are extremely important for those professional photographers…

Review Overview


Stellar Flash Storage!

Strontium has produced two excellent flash storage drives. They both out perform their own expectations, are accompanied by a bunch of features and an excellent warranty. All of which comes at a great price point.

User Rating: 2.56 ( 131 votes)


  1. Thank you for your comparison and in-depth review. I am going to use my years old 32GB 466X to record 2.7K videos in Mavic Air. I hope i dont encounter stuttering of any sort.

    Many thanks again.

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