SanDisk Extreme PRO SD Memory Card 128GB 250MB/s
- Memory Storage Capacity: 128 GB
- Secure Digital Association Speed Class: Class 10
- Flash Memory Video Speed Class: V30
- Flash Memory Type: SDXC
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
The capacity and speed tier to reach for when 64GB feels tight, 256GB feels excessive, and top offload speed genuinely matters to the workflow.
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ASIN: B0GDQRNTF3Model: SDSDXXJ-128G-GSCINCategory: SD Cards
Sizes Available
Styles Available
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Overview
A 128GB SDXC card in SanDisk's top Extreme PRO line, rated UHS-I U3 and Video Speed Class 30 (V30) with a stated read speed of up to 250MB/s.
SanDisk's own spec brackets the 170MB/s write figure to the 256GB-1TB capacities in this line, so that number should not be assumed for the 128GB card reviewed here; the 250MB/s read rating is the one SanDisk states across the range. It sits in the same PRO tier as the 64GB card in this catalog, just at double the capacity.
- 128GB SDXC card
- UHS-I U3 / V30
- Up to 250MB/s read
- SanDisk Memory Zone app support
Who it's for
Suits photo and video shooters who want the fastest card in SanDisk's SD lineup and a larger practical capacity before jumping to CFexpress. Buyers who do not need top-tier offload speed can save money on the standard Extreme line instead.
Pros and cons
- Rated for sustained 4K UHD recording (U3/V30)
- Fastest stated read speed in SanDisk's SD lineup
- Built to withstand temperature, water, shock and rough handling
- Higher-capacity write speed figures do not apply to this 128GB card
- Priced above the standard Extreme line
Performance notes
Like the rest of the line it is built to survive temperature extremes, water, shock and rough handling, with the Memory Zone app available for backup and file organization.
Specifications
| Brand | Sandisk |
|---|---|
| Model | SDSDXXJ-128G-GSCIN |
| Dimensions & fit | |
| Item Dimensions L X W | 0.1 × 0.9 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Secure Digital Association Speed Class | Class 10 |
| Flash Memory Video Speed Class | V30 |
| Read Speed | 250 megabytes_per_second |
| Construction & materials | |
| Color | Not Available |
| Compatibility & installation | |
| Hardware Connectivity | SDXC |
| Compatible Devices | Camera |
| Included components | |
| Number Of Packs | 1 |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | Limited lifetime |
| Warranty Type | Limited |
| Other details | |
| Flash Memory Type | SDXC |
| Number Of Items | 1 |
| Mfr Part Number | SDSDXXJ-128G-GSCIN |
| Additional Features | Dust Proof, Temperature Proof, Water Proof, Wearout Proof, X Ray Proof |
Frequently asked questions
What is the read speed of the SanDisk Extreme PRO 128GB card?
Up to 250MB/s, per SanDisk's stated specs for the Extreme PRO line.
Does the 128GB card reach 170MB/s write speed?
SanDisk brackets that write figure to 256GB-1TB capacities, so it does not apply to the 128GB card.