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.

The short answer

ProGrade Digital SDXC UHS-II V90 Iridium 1TB comes out ahead by a clear margin (4.7 vs 4.2). The gap is mostly about 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 #1 in Best 1TB SD Cards

ProGrade Digital SDXC UHS-II V90 Iridium 1TB

4.7

$529.99as of Jun 7

The ProGrade Digital SDXC UHS-II V90 Iridium 1TB is the top all-round 1TB SD card for serious video shooters. Its true V90 rating guarantees the sustained write speeds needed for high-bitrate 4K, 6K and 8K, and it pairs rated 300/275MB/s speeds with pro-grade reliability and error correction. The trade-offs are a premium price and a measured write speed slightly below the headline number.

Strengths

— True V90 rating guarantees a 90MB/s minimum sustained write for 4K, 6K and 8K video
— Among the fastest 1TB SDXC cards, with rated 300MB/s read and 275MB/s write
— Built-in error correction adds reliability that most flagship rivals omit

Watch-outs

— Measured write speed lands below the rated maximum, behind the very fastest Sony G cards
— Premium price for the top-tier V90 performance
— Needs a UHS-II reader and a UHS-II camera slot to reach full speed

$529.99 · Check Price on Amazon Full review →

Ranked #5 in Best 1TB SD Cards

SanDisk Extreme PRO 1TB SDXC UHS-I

4.2

$279.99as of Jun 7

The SanDisk Extreme PRO 1TB SDXC UHS-I is the value and compatibility champion of this list. It works at full speed in any standard SD slot, reliably hits its 200MB/s read and 140MB/s write spec, and covers 4K UHD video with U3/V30 ratings, all at the lowest price here. The trade-off is the UHS-I bus, which caps it well below the UHS-II cards for speed.

Strengths

— The most affordable and widely compatible 1TB SD card here, working at full speed in any standard SD slot
— Reliable real-world performance that matches its 200MB/s read and 140MB/s write spec
— U3 and V30 ratings cover 4K UHD video recording

Watch-outs

— UHS-I bus caps speeds far below the UHS-II cards in this list
— V30 rating only, not suited to high-bitrate 6K or 8K video
— Slower offloads make emptying a full 1TB card take longer

$279.99 · Check Price on Amazon Full review →

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 275MB/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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