1TB CFexpress Cards Are Here - and They Should Change How You Work

Lexar's Gold 4.0 sits above their Silver series in the lineup and uses the CFexpress 4.0 standard (PCIe Gen 4) rather than the older 2.0 interface. The headline figures - 3,600 MB/s read and 3,300 MB/s write - represent a genuine step up in ceiling performance, although in practice no current camera can saturate a 4.0 card. Where the 4.0 standard pays off immediately is when offloading footage: paired with a compatible CFexpress 4.0 reader, the Lexar GOLD 4.0 moves data roughly twice as fast as its 2.0 predecessor. A full 1TB dumps in a fraction of the time.

The 3,000 MB/s sustained write speed is the key figure for in-camera recording. It is comfortably ahead of what any current mirrorless or cinema camera demands, which means this card has meaningful headroom for future camera bodies. Tested at B&H with SSD Review's methodology, the card held a 1,510 MB/s sustained average across an 85GB 8K transfer - well within spec and with no thermal throttling noted. Compatibility is broad: Canon EOS R3, R5 II, R5 C, R1, Nikon Z9, Z8, Z6 III, RED V-RAPTOR, Blackmagic Cinema 6K. The 8-point ruggedisation (temperature, vibration, wear-out, dust IP5X, drops, shocks, compression, bends) and a limited lifetime warranty round out a comprehensive package.

At $699.99 (currently $100 off the $799.99 list price at B&H), this is the most accessible of the three cards reviewed here. It is worth noting that prices on CFexpress cards are volatile - they have fluctuated significantly in both directions over the past six months, and deals below $400 have appeared on Amazon during promotional periods. Check current pricing before buying.

Angelbird is an Austrian company that has built a strong reputation in professional media storage over the past decade, and the AV PRO SE v4 is their most capable CFexpress Type B card to date. The jump to CFexpress v4 brings headline read speeds of 3,700 MB/s and sustained writes of 2,100 MB/s - figures that put it in a different performance tier from CFexpress 2.0 cards. In practice, most current cameras cannot saturate a 2.0 card, let alone a 4.0 one, but the headroom matters for futureproofing and for transfer speeds when offloading footage to a compatible card reader.

Angelbird's "Stable Stream" technology is the key differentiator from most competitors. It guarantees that write speeds will not throttle or drop during extended recording - the 2,100 MB/s minimum sustained figure is a floor, not an average. For cinematographers shooting long-form 12K RAW or ultra-high-bitrate cinema formats, this consistency matters more than the peak headline figure. The card is compatible with Canon EOS R5 II, R5 C, Nikon Z9, Z8, RED V-RAPTOR 8K, and Blackmagic Cinema cameras, among others.

The v4 card is also built to a noticeably higher physical standard. It is rated for extreme temperature, moisture, dust, shock, x-ray, and magnetic exposure - a meaningful consideration for documentary filmmakers, news crews, and any shooter working in unpredictable environments. Firmware updates via the Angelbird card reader can optimise performance and extend card lifespan over time.

The $599.99 price sits below the Lexar Gold at $699.99, which makes it the most accessible of the three CFexpress 4.0 cards here. It is justified for cinematographers and shooters whose cameras can take advantage of v4 speeds, and for professionals working in demanding environments where the Stable Stream guarantee and rugged build matter. For still photographers on current-generation cameras, the difference in sustained write performance between these cards will be imperceptible in field use.

ProGrade Digital was founded in 2018 by former executives from established memory brands, and has earned a reputation for producing cards that prioritise consistent, verified performance over marketing headline numbers. The Gold 4.0 Type B is their mid-tier CFexpress 4.0 offering - below the flagship Cobalt in sustained write performance, but covering 1TB in a way the current Cobalt (available only at 1.3TB) does not.

The Gold 4.0 specifies a 2,400 MB/s minimum sustained write speed - a notably high floor that the company bases on extensive internal testing. In Shuttermuse's independent testing, the ProGrade Cobalt 2.0 card achieved sustained writes just shy of 1,400 MB/s; the Gold 4.0 comfortably clears that with significant headroom. Nikon has historically used ProGrade Cobalt cards to validate burst depth specifications on the Z8 and Z9, which speaks to the brand's standing in the professional community.

The two-year warranty is among the stronger guarantees in this category - the Lexar Gold's limited lifetime warranty varies in what it actually covers, while ProGrade's terms are clear and well-documented. For commercial photographers who treat gear failure as a professional risk rather than a personal inconvenience, warranty clarity has real value.

The price is the honest downside. At $749.99 it is the most expensive of the three, and the hardest to justify on pure spec comparison - the Angelbird AV PRO SE offers comparable v4 read speeds for $150 less. The case for ProGrade rests on its RED certification, its strong reliability track record in the professional community, and warranty clarity. A B&H reviewer noted in May 2026 that the card is "the gold standard" but that the price "doubling and tripling is simply insane" - which is a fair summary of where the market is right now.