List of approved CFast Cards

How about the FreeTail 3700x Cfast cards? They appear to be the least expensive and claim they hit the same speeds as the rest of these companies?

Is there any testing in progress?

How about the FreeTail 3700x Cfast cards? They appear to be the least expensive and claim they hit the same speeds as the rest of these companies?

Is there any testing in progress?

Those prices are tempting, though after shooting 4:1 RAW 60fps I don't want a card smaller than 512GB and that company only goes up to 256GB.

512GB CFast 2.0

I'm wary of a company who has a card they claim goes more than 10% faster than the theoretical speed limit of SATA...

With sustained write speeds of only 130 MB/s, I don’t think these new G Series CFast 2 cards from Sony are suitable for the URSA family.

http://www.newsshooter.com/2017/11/29/n ... ange-sony/



Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk

With sustained write speeds of only 130 MB/s, I don’t think these new G Series CFast 2 cards from Sony are suitable for the URSA family.

http://www.newsshooter.com/2017/11/29/n ... ange-sony/



Sent from my iPhone using Tapatalk


Sent from my iPhone using Tapatalk

128GB max? 512GB or bust. This 4K60p RAW 4:1 is chunky

Sent from my Pixel XL using Tapatalk

Christopher, like your attitude. Remember though for raw, you can record to two cards so the data rate to a given card is then half what you would need if you were recording to a single card. When recording to two cards, the even numbered frames go to one card and the odd numbered frames go to the other card.


Sent from my iPhone using Tapatalk

Christopher, like your attitude. Remember though for raw, you can record to two cards so the data rate to a given card is then half what you would need if you were recording to a single card. When recording to two cards, the even numbered frames go to one card and the odd numbered frames go to the other card.

Thanks Rick, on that note I'll go dual 512GB cards

Which by the way I ordered the 512GB CFast 2.0 from Egodisk last night and will report back the Blackmagic Speed Test results + any dropped frames with 4K60p CDNG, 3:1 and 4:1. Probably will arrive next Friday.

Happy Holidays all!

You know more about those Egodisk cards than I do. I stay with cards on the approved list but they are considerably more expensive.


Sent from my iPhone using Tapatalk

Just because one card from a manufacturer is on the list, doesn't mean that different similar models and different capacities from the same manufacturer will pass. Even if it lists that it is higher speed.

Not all card media are created equal.

We only list cards that we have tested extensively and certified for recording footage continuously on our cameras.

As Tim mentioned - we were not able to send the 256GB 3700x card as were out on stock at that time. All our 3700X cards have been successfully been tested on the cameras. You can check some reviews on Amazon USa and Amazon UK

We had a firmware update in Q1 2017 that fixed all old bugs. All cards in global market is with the latest firmware.

Regards,

Chet
Komputerbay
Tech Support

[Tim Schumann]

Not all card media are created equal.

We only list cards that we have tested extensively and certified for recording footage continuously on our cameras.

As Tim mentioned - we were not able to send the 256GB 3700x card as were out on stock at that time. All our 3700X cards have been successfully been tested on the cameras. You can check some reviews on Amazon USA and Amazon UK

Please feel free to send through the 3700x cards when they become available, as requested, but we can not add them to the list until we have run them through our full certification process.

You know more about those Egodisk cards than I do. I stay with cards on the approved list but they are considerably more expensive.

Did some tests with the EgoDisk 512GB Elite Pro:

No dropped frames with RAW 4K60p 4:1 and 3:1.
But frames start dropping after a few seconds of RAW Lossless 4K60p

Rest of the findings are at my Blog Post

You know more about those Egodisk cards than I do. I stay with cards on the approved list but they are considerably more expensive.

Did some tests with the EgoDisk 512GB Elite Pro:

No dropped frames with RAW 4K60p 4:1 and 3:1.
But frames start dropping after a few seconds of RAW Lossless 4K60p

Rest of the findings are at my Blog Post

I dont think any single card can do that.. that is 1.025MB/s (without the known compression for lossless), on an interface with a teoretical speed of 600MB/s..

Test with lower frameratea one by one, and work your way through what can be done, and what cannot be done.

And remember do the test with actually footage - not black lens cap shots. The data is compressed remember.. so test something that is very variable to flex tve muscles of the card to maximum!

Thanks for the feedback, Christopher. As Dennis mentioned, that’s normal for 60 fps at 4K which requires dual card recording in raw. ProRes can do it on a single card, but not lossless raw.


Sent from my iPhone using Tapatalk

[Tim Schumann]

Yes the faster cards on the recommended list for 4K or 4.6K Lossless RAW can generally sustain up to 40 frames per second to a single card without dropping frames. Above that you are into burst speeds where a single card can sustain that data rate for five, ten or fifteen seconds before it maxes out.

Compressed 3:1 or 4:1 RAW at 60p to a single card is less of an issue for most cards, which is why we introduced those two options.

Compressed 3:1 or 4:1 RAW at 60p to a single card is less of an issue for most cards, which is why we introduced those two options.

Thank you for chiming in Tim. I tested 4K60p RAW (4:1,3:1) again with footage that has constant motion with 'stop rec if card drops frame' enabled. No frames dropped until the card ran out with a single 512GB EgoDisk.

Thank you for your help.
Best Regards,
David

The following CFast 2.0 cards were added to the URSA supported list:

Transcend 128GB CFX650
Transcend 256GB CFX650

The Egodisk Elite Pro 256 GB CFAST Card 2.0, it's good for the Ursa Mini 4.6?

[Tim Schumann]

This card is not on the recommended list so no, we wouldn't recommend it.

and the Komputerbay Professional 3700 x 256 GB?

[Tony Rivera]

Here is the list of CFast cards that have cleared our approval for the URSA Cameras.

This link at the top of this thread will provide information on the cards that are approved.