Head-to-head · Best 1TB SD Cards

ProGrade Digital SDXC UHS-II V90 Iridium 1TB vs SanDisk Extreme PRO 1TB SDXC UHS-I

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

ProGrade Digital SDXC UHS-II V90 Iridium 1TB comes out ahead by a narrow margin (4.2 vs 4.0). ProGrade Digital SDXC UHS-II V90 Iridium 1TB is best for: Professional photographers and videographers shooting high-bitrate 4K, 6K or 8K who need a guaranteed V90 sustained write. Read the strengths below before deciding.

Higher ratedRanked #2 in Best 1TB SD Cards

ProGrade Digital SDXC UHS-II V90 Iridium 1TB

4.2

2 sourcesall derived$1,049.99as of Oct 25

For serious video shooters, the ProGrade Digital SDXC UHS-II V90 Iridium 1TB is the top all-round 1TB SD card. A true V90 rating guarantees the sustained writes that high-bitrate 4K, 6K and 8K demand, and the rated 300/250MB/s speeds come with pro-grade reliability and error correction. Expect to pay a premium, and expect measured write speed to land slightly under the headline number.

Strengths

— True V90 rating guarantees a 90MB/s minimum sustained write for 4K, 6K and 8K video
— Built-in error correction adds reliability that most flagship rivals omit
— Shockproof, X-ray-proof and rated from -13 to 185F with a write-protect switch

Watch-outs

— Measured write speed lands below the rated maximum, behind the very fastest Sony G cards

$1,049.99 · Check Price on Amazon Full review →

Ranked #4 in Best 1TB SD Cards

SanDisk Extreme PRO 1TB SDXC UHS-I

4.0

2 sourcesall derived$279.99as of Oct 25

Compatibility and price are what the SanDisk Extreme PRO 1TB SDXC UHS-I wins on. It runs at full speed in any standard SD slot, reliably hits its 200MB/s read and 140MB/s write spec, and carries U3/V30 ratings for 4K UHD video, all at the lowest price here. The UHS-I bus is the trade-off, capping it well below the UHS-II cards for speed.

Strengths

— Reliable real-world performance that matches its 200MB/s read and 140MB/s write spec
— U3 and V30 ratings cover 4K UHD video recording
— Includes RescuePRO Deluxe data-recovery software and a write-protect switch

Watch-outs

— Not the right choice for cameras that support faster UHS-II cards

$279.99 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

ProGrade Digital SDXC UHS-II V90 Iridium 1TB

The only true V90 card in this group, guaranteeing higher sustained writes than the V60-rated Lexar Armor Gold, Lexar Professional Silver Pro and SanDisk Extreme PRO UHS-II V60. Far faster than the UHS-I SanDisk Extreme PRO, which tops out around 140MB/s write.

SanDisk Extreme PRO 1TB SDXC UHS-I

The only UHS-I card in this group, far slower than the UHS-II Lexar Armor Gold, Lexar Professional Silver Pro, SanDisk Extreme PRO UHS-II and ProGrade Digital Iridium, but the cheapest and most universally compatible. Best suited to cameras and devices that do not support UHS-II.

Specs side-by-side

Spec	ProGrade Digital SDXC UHS-II V90 Iridium 1TB	SanDisk Extreme PRO 1TB SDXC UHS-I
Capacity	1TB	1TB
Bus	UHS-II	UHS-I
Video speed class	V90	—
Read speed	Up to 300MB/s	Up to 200MB/s
Write speed	Up to 250MB/s	Up to 140MB/s
Min sustained write	90MB/s (V90)	—
Durability	Shockproof, X-ray-proof, -13 to 185F	Shockproof, temperature-proof, waterproof, X-ray-proof
Extras	Built-in error correction, write-protect switch	—
Speed class	—	U3, V30
Video	—	4K UHD
Software	—	RescuePRO Deluxe subscription

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