Delkin Black 325GB CFE Type B On Sale - Sale Discontinued

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I wonder the reason for the great deal.
BH Photo is one of the top photography retailers, so they have good relationships with a lot of the manufacturers, and due to their volume, they are able to run some sales no one else has. E.g. I was able to get the F mount Sigma 35mm f/1.4 at a price that I've never seen repeated (when I missed a Zeiss lens sale there that has certainly never been repeated! - prices on new Milvus line F mount lenses that were cheaper than 'well used' prices - still wish I hadn't missed that one! ah well).

Additionally, Friday is "World Backup Day" and this is part of that. Look for great deals on storage at BH, and probably many dealers. And, yes, this is a great deal on a great card (I posted about them here previously here https://bcgforums.com/index.php?thr...m-delkin-on-z9-buffer-test.16141/#post-179841
and here: https://bcgforums.com/index.php?thr...aims-no-buffer-on-z9.15455/page-5#post-175687). I'm considering get another backup card at this price... hmmm

Cheers!

...Dave...
 
The Delkin 2TB CFexpress card is rated at 1540 MB/s write speed and selling for less than $600. As I get more into shooting video I am buying larger capacity cards for internal recording with the Z9. I shot 50 frame bursts at 20 fps HE Raw with no problems using this card. I did not detect any problems with 4K/60p N-Raw video but need to verify in Resolve as Nikon's NX Studio does not support Nikon N-Raw files at this time - go figure.
 
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Almost always, anything in the BH Deal Zone is midnight to midnight ET, then it's gone. Some repeat fairly frequently - some are a one time thing. Memory prices will continue to get cheaper, so likely sooner or later we'll see an equivalent deal - but that could be months+ away...

The Delkin 2TB CFexpress card is rated at 1540 MB/s write speed
@Calson NOTE: you reference the POWER card (not the BLACK card), so that rating is NOT for the critical thing: SUSTAINED WRITE speed (note that the write speed has the word "max" in it). Sustained write speed is the determining factor for things like the buffer depth on the Z9 for instance. It might be able to do sustained 4k video (don't quote me!), but it will definitely not support 8k video. The 650gb BLACK card is $750 atm.

Also, I didn't pull the trigger and get another BLACK card - this time...


Egrets - will I have some? 🙃

...Dave...
 
this is probably the best objective evaluation of card performance i've seen anywhere:

PERFORMANCE image source
Lexar-Professional-Diamond-512GB-CFExpress-Card-Sustained-Write-Performance-Chart.jpg
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TEMPERATURE image source
Lexar-Professional-Diamond-512GB-CFExpress-Card-High-Temperature-Chart.jpg
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here's all their tests:
 
Could this mean the new Nikon body will not use CFExpress B?
it seems unlikely they will move away from it in the near term for PHOTO based cameras

it might make sense for them to do something different for something like a video based camera, maybe supporting built a built in m.2 nvme drive (maybe user accessible, maybe not).

longer term, who knows? cfe-b has a hard cap of 2000MB/s, so if you want to break that limit, you're going to have to do ... something
 
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this is probably the best objective evaluation of card performance i've seen anywhere:

PERFORMANCE image source
View attachment 57854

TEMPERATURE image source
View attachment 57855

here's all their tests:
I had seen this previously and find it interesting the 256 Delkin Power performed so poorly while the 128 Delkin Power performed so well. Considering all the other Delkin cards performed well, I have to wonder what happened.
 
I had seen this previously and find it interesting the 256 Delkin Power performed so poorly while the 128 Delkin Power performed so well. Considering all the other Delkin cards performed well, I have to wonder what happened.
it does seem to be the case that different size cards often use different internals, so there are performance variations between sizes. the other thing is there do appear to be different generations of cards, and until recently, it isn't clear how much transparency there was about this so it could be they are from different generations.
 
Thank you, John, et. al. This has been very enlightening for me. I'm surprised that Sony can move lossless compressed files at 20 fps despite using slower CFExpress Type A data cards. Is larger buffer the only way to overcome slower write speed?
 
Thank you, John, et. al. This has been very enlightening for me. I'm surprised that Sony can move lossless compressed files at 20 fps despite using slower CFExpress Type A data cards. Is larger buffer the only way to overcome slower write speed?
yes, they're using a larger buffer. this is an advantage when using slow media because you can buffer up shots regardless of the media speed
 
it does seem to be the case that different size cards often use different internals, so there are performance variations between sizes. the other thing is there do appear to be different generations of cards, and until recently, it isn't clear how much transparency there was about this so it could be they are from different generations.
It is possible about a different gen card. Generally larger capacity cards are faster than smaller capacity ones, the opposite of what is represented here. The difference here is drastic, considering the cheaper Prime card is also way faster.
Thank you, John, et. al. This has been very enlightening for me. I'm surprised that Sony can move lossless compressed files at 20 fps despite using slower CFExpress Type A data cards. Is larger buffer the only way to overcome slower write speed?
The large buffer to overcome slow cards has pros and cons similar to fast cards and smaller buffer. The Z9 clears the buffer instantly when using fast cards where a large buffer and slow cards can take a long time to clear and potentially make the camera unusable while you wait for it to clear.
 
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