Silicon Power Superior UHS-I microSDXC Memory Card with SD Adapter SP128GBSTXDV3V1NSP 512 GB
The 512GB Superior UHS-I microSDXC Memory from Silicon Power keeps up with the pace of your life, allowing you to capture Ultra HD 4K and Full HD video, as well as raw and JPEG stills and bursts. Built with a storage capacity of up to 512GB, this card features a maximum read speed of 100 MB/s, a maximum write speed of 80 MB/s, and a thanks to its V30 / U3 rating, write speeds are guaranteed not to drop below 30 MB/s. If your device does not support V30 / U3, there is backward compatibility for Class 10 / U1 devices. Aside from support for UHS-I, V30, and U3, Silicon Power built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations, so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. Designed and tested to withstand harsh environments, Silicon Power's 512GB Superior card is resistant against water, shock, and x-rays, as well as temperature extremes of 32 to 158°F. It can also endure a minimum of 10,000 insertions. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.
The 512GB Superior UHS-I microSDXC Memory from Silicon Power keeps up with the pace of your life, allowing you to capture Ultra HD 4K and Full HD video, as well as raw and JPEG stills and bursts. Built with a storage capacity of up to 512GB, this card features a maximum read speed of 100 MB/s, a maximum write speed of 80 MB/s, and a thanks to its V30 / U3 rating, write speeds are guaranteed not to drop below 30 MB/s. If your device does not support V30 / U3, there is backward compatibility for Class 10 / U1 devices. Aside from support for UHS-I, V30, and U3, Silicon Power built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations, so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. Designed and tested to withstand harsh environments, Silicon Power's 512GB Superior card is resistant against water, shock, and x-rays, as well as temperature extremes of 32 to 158°F. It can also endure a minimum of 10,000 insertions. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.
The 512GB Superior UHS-I microSDXC Memory from Silicon Power keeps up with the pace of your life, allowing you to capture Ultra HD 4K and Full HD video, as well as raw and JPEG stills and bursts. Built with a storage capacity of up to 512GB, this card features a maximum read speed of 100 MB/s, a maximum write speed of 80 MB/s, and a thanks to its V30 / U3 rating, write speeds are guaranteed not to drop below 30 MB/s. If your device does not support V30 / U3, there is backward compatibility for Class 10 / U1 devices. Aside from support for UHS-I, V30, and U3, Silicon Power built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations, so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. Designed and tested to withstand harsh environments, Silicon Power's 512GB Superior card is resistant against water, shock, and x-rays, as well as temperature extremes of 32 to 158°F. It can also endure a minimum of 10,000 insertions. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.
The 512GB Superior UHS-I microSDXC Memory from Silicon Power keeps up with the pace of your life, allowing you to capture Ultra HD 4K and Full HD video, as well as raw and JPEG stills and bursts. Built with a storage capacity of up to 512GB, this card features a maximum read speed of 100 MB/s, a maximum write speed of 80 MB/s, and a thanks to its V30 / U3 rating, write speeds are guaranteed not to drop below 30 MB/s. If your device does not support V30 / U3, there is backward compatibility for Class 10 / U1 devices. Aside from support for UHS-I, V30, and U3, Silicon Power built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations, so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. Designed and tested to withstand harsh environments, Silicon Power's 512GB Superior card is resistant against water, shock, and x-rays, as well as temperature extremes of 32 to 158°F. It can also endure a minimum of 10,000 insertions. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.
in 3 offers
The lowest price for Silicon Power Superior UHS-I microSDXC Memory Card with SD Adapter SP128GBSTXDV3V1NSP 512 GB right now is $139.00 at Mwave Australia, compared across 3 retailers.
The all-time low was $43.90 on 2 Jan 2025 — today's price is 217% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 Nov 2026.
Last updated at 03/11/2026 12:50:06
Silicon Power 512GB microSDXC UHS-I Micro SD Card with Adapter, Up to 100MB/s Read & 80MB/s Write, C10 U3 V30 A1 4K UHD Video, High Speed microSD
Free delivery
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Silicon Power 512GB Superior A1 Series microSDXC UHS-I U3 V30 Memory Card - 100MB/s
Free delivery between 6–13 Nov
Silicon Power 512gb Microsdxc Uhs-i Micro Sd Card With Adapter, Up To
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on bhphotovideo.com
Abnormally slow read and write after normal 2 weeks of use with DJI Action Pro 5, security cam recorders, drone.. Eventually won't read anymore just now. Swapped to another same SP card and different brand, recorded and playback flawlessly. I can't trust this kind of media. Returning all these batch. The integrity of footage recorded is far more valuable than saving $30 vs other brands. I would NOT use this on anything important.
originally posted on bhphotovideo.com
I am using this card in my Samsung 20 . Did an accurate benchmark and the speed test was, read: 66mb/s write: 63mb/s. All this performance (and space), with an A2 app rating, considering that no high speed adapter was used, is amazing. It's a great option and it really stands up to its competitors! Extremely satisfied. Thank you B&H!!
originally posted on bhphotovideo.com
As the title states, it's a small and convenient item that's flexible for connections and has a HUGE amount of storage capability. The price ain't bad either! It's simple and straight forward. Give it a try, I don't think that you'll be disappointed.
| Speed Class | UHS Speed Class 3 (U3), Class 10 |
| Read Speed | Up to 100 MB/s, Minimum random read of 1,500 IOPS |
| Write Speed | Up to 80 MB/s, Minimum random write of 500 IOPS |
| Card Format | microSDXC |
| Supported Devices | Tablet |
Silicon Power 512GB microSDXC UHS-I Micro SD Card with Adapter, Up to 100MB/s Read & 80MB/s Write, C10 U3 V30 A1 4K UHD Video, High Speed microSD
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Silicon Power 512GB Superior A1 Series microSDXC UHS-I U3 V30 Memory Card - 100MB/s
Free delivery between 6–13 Nov
Silicon Power 512gb Microsdxc Uhs-i Micro Sd Card With Adapter, Up To
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Abnormally slow read and write after normal 2 weeks of use with DJI Action Pro 5, security cam recorders, drone.. Eventually won't read anymore just now. Swapped to another same SP card and different brand, recorded and playback flawlessly. I can't trust this kind of media. Returning all these batch. The integrity of footage recorded is far more valuable than saving $30 vs other brands. I would NOT use this on anything important.
I am using this card in my Samsung 20 . Did an accurate benchmark and the speed test was, read: 66mb/s write: 63mb/s. All this performance (and space), with an A2 app rating, considering that no high speed adapter was used, is amazing. It's a great option and it really stands up to its competitors! Extremely satisfied. Thank you B&H!!
As the title states, it's a small and convenient item that's flexible for connections and has a HUGE amount of storage capability. The price ain't bad either! It's simple and straight forward. Give it a try, I don't think that you'll be disappointed.
I've been a Samsung EVO Select devotee for a couple of years. They work well in cameras, giving really good read speeds for downloading photos. However, cameras and read speeds aren't the only use and metric for a memory card. Come to find out, the EVO Select isn't good at all for writing lots of small files in the range of 4 to 6 MB. Think of putting lots of MP3s or MP4s (music) on the card for on the go listening. With lots of files in the 4 to 6 MB range, speed is abysmal; in the 25 MB/s range. Thousands of files will take quite a while.Here's my surprise. The Silicon Power Superior U3 A2, 256GB in my case, gobbles up those same files at around 50 MB/s. Yes, double the speed. Less expensive, just as fast on large files, and double the speed on smaller files? ... MoreI've been a Samsung EVO Select devotee for a couple of years. They work well in cameras, giving really good read speeds for downloading photos. However, cameras and read speeds aren't the only use and metric for a memory card. Come to find out, the EVO Select isn't good at all for writing lots of small files in the range of 4 to 6 MB. Think of putting lots of MP3s or MP4s (music) on the card for on the go listening. With lots of files in the 4 to 6 MB range, speed is abysmal; in the 25 MB/s range. Thousands of files will take quite a while.Here's my surprise. The Silicon Power Superior U3 A2, 256GB in my case, gobbles up those same files at around 50 MB/s. Yes, double the speed. Less expensive, just as fast on large files, and double the speed on smaller files? Sign me up!For the record, I'm using the ProGrade Digital Dual-Slot UHS-II SDXC USB 3.1 Gen 2 Type-C Card Reader, purchased from B&H, of course. Awesome card reader, BTW.
| Speed Class | UHS Speed Class 3 (U3), Class 10 |
| Read Speed | Up to 100 MB/s, Minimum random read of 1,500 IOPS |
| Write Speed | Up to 80 MB/s, Minimum random write of 500 IOPS |
| Card Format | microSDXC |
| Supported Devices | Tablet |
