SanDisk Extreme 128GB microSD
The cheapest card that is still fast enough for 4K. Plenty for a backup of a single stream.
Tracked 2026-10-01. The retailer listing is the price you pay.
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Our take on the SanDisk Extreme 128GB microSD
The SanDisk Extreme 128GB is a microSD card with V30 and U3 ratings, for streamers who record 4K clips on a phone, handheld console or action cam. At a tracked $42.99 it sits at the top of its $39.99 to $42.99 range across three points from August 25 to October 1, 2026.
The listing quotes read speeds up to 245MB/s and writes up to 170MB/s, but for the 256GB size and above, so a 128GB card may be slower. It lists 5K video support. The card is rated waterproof and shockproof. The price is $3 above its low. It has 4.7 across 1,171 retailer ratings.
- V30 and U3 ratings for video
- Works with action cams and handheld consoles
- Listing says waterproof and shockproof
- Top speeds quoted are for larger sizes
- Tracked price is at its high, $3 over the low
- 128GB fills fast on 4K
Where it fits in a build
Local recording as a backup of the live feed in case the signal drops. See every storage pick
| Capacity | 128GB |
| Speed | Up to 245MB/s, V30 |
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SanDisk Extreme 128GB microSD
$42.99Tracked 2026-10-01
Buy links are affiliate links: we earn a commission at no extra cost to you. Prices are tracked estimates, not live prices. Full disclosure
We do not lab-test hardware. Ratings and review counts come from the retailer listing and are labelled as such; stream-quality figures are conservative planning budgets from our published model. Prices are tracked at build time, not live, and were last refreshed 2026-10-22. How the numbers are derived: methodology. How picks are chosen: editorial policy.