Delkin Devices128GB POWER CFexpress Type B Memory Card (DCFX1-128)

I needed one more CFexpress card for my Canon EOS 1D X Mark III as I like to have 4 available to use (2-in camera and 2 back-up/spare). While I have seen the Delkin name around, I've not used them before. After looking into the company and their products, I took the jump and ordered one.VERY glad I did!Well...... at first I was a little put-off. The description for this card shows the READ SPEED as 1730MB/s and the WRITE SPEED as 1540MB/s which is blazing fast.However, the card I received (see photo) shows the READ as 1600MB/s and the WRITE as 600MB/s. While the 1600MB/s isn't a deal killer on its own, the 600MB/s is. My Canon 1D X Mark III requires a card capable of VERY fast write speeds and the 600 would have killed the deal.Somewhat disappointed, I called DELKIN, and nearly immediately was speaking to a live human here in the US. I don't recall his name, but he was in Technical Service and was extremely helpful. He explained that the cards were in fact 1730/1540 however the labels were ordered with the error in speeds but still made their way to customers.Satisfied, I took the card and placed it in my camera and did a few test shots - all seemed fine. Then for my next photo assignment, I dual wrote to my 2 cards as a safeguard in case there was an issue with the Delkin (I would recommend this to anyone using either a new brand of card or on a new platform). The card performed flawlessly.On my next assignment, confident in the card and its capabilities, went to a single card write and the card again was bulletproof. As far as the speed? Well, I did a few 35-50 shot bursts with ZERO buffering (at 16fps - frames per second). That would have choked a 600MB/s card... Then I went full monty and shot a ~100 pic burst in Live View Mode which is 20fps and again had ZERO buffer.By the way - I ONLY shoot RAW and each RAW file is around 20MB so a 20frames/second on 600 MB card would choke up after 3-5 seconds and kill the buffer. I was never throttled nor did my buffer ever drop below 99... 99 is the default number for the buffer on this camera - but the "real number" is closer to 1,000 frames.All that to say - this is an exceptional piece of kit. Well made. Reliable. Affordable.

Update September 2022 - I've been using this card for 18 months now. Got a new Z9 in January 2022 and have over 260,000 shots on it with this card on that body alone - combined with the roughly 150,000 on my Z7II - that's easily over 400,000 pics and still no issues with this card - love it.Update October 2021 - I used this card all spring/summer for baseball images - shot over 120,000 photos over 65 baseball games this summer and the card worked great for me on my Z7II - no issue at all at this point - very happy.original review: I recently bought this for my Nikon Z7 II camera - the 1 tb card allows for 11,300 RAW files (or 121,000 basic .jpg files!!) - so I never, ever worry about running out of memory. I typically shoot baseball photos and can easily shoot 4,000 RAW shots over the course of 4-5 hours. Files transfer very fast to my MacBook using the Sony XQD/CFE card reader.

I love this brand and these cards. I shoot with a Nikon Z6ii and these are the only cards I will use.Uploading and transferring photos is quick and efficient. A must-have for the pros.

I use these cards in my R5 and they seem to work really well. I have no issues with speed. I love the capacity and the price.

Photographers know they must not cheap out on memory cards and this Delkin product is perfect for the job. I could only suggest a 512 GB next time.

Very slow to write. I own the exact card in 256 and 128, these are fast, this one is very slow, my camera buffers easily. Same exact looking cards and same specs. For some reason 512 is slow. Holds data well. No problems.

I've used it for several trips in the past year and haven't filled it up yet! It's proven to be reliable and a good investment.

This is the second one of these I’ve ordered. It’s a very fast card and has never let me down. Seems very reliable.I was surprised that I started noticing signs of wear on it after only a year and a half. But I’m an extremely active photographer/videographer so maybe that’s why. It’s been working fine but I’ve noticed my Canon red indicator light flashing every 10-20 seconds and when I researched it, someone suggested that the memory card was starting to fail.I went ahead and got a new one just to be safe and not risk losing my work. Also could have worn our faster than expected due to the amount of video I shoot as well. I’m still very happy with the card and will order them in the future.

FAST and efficient!!

Card purchase in March 2022 for use in Nikon z9 it worked flawlessly until March 2023 after over 10000 pictures card froze in camera and I was not able to retrieve pics. Contacted Delkin and card was replaced in less than 48 hours for 0 dollars as per lifetime warrantyThank you Delkin

This card works well on Canon R5 both stills and video. 8K, 4K 120p, no problem. It’s not hot in the card reader, my Sandisk card could burn my hand. It’s 64GB card but the capacity shows 80GB, no complaints on this 😀 Very happy about the purchase. Highly recommended.

Llevo más de un año utilizando esta tarjeta. No me ha dado ningún problema, es muy rápida y de gran capacidad.

I purchased two of these cards and I have not tested the limits of them but they seem to be perfectly good, fast, and reliable cards. I'm using them in a Nikon Z7ii and they have been flawless. The only reason I didn't give five stars is because of the cost. I know they are not the most expensive, but still the cost seems higher than justified when compared to other card types.