It's apparently to do with cheapo PC box makers using unbranded cards for the front USB panel which are lower quality or have less optimized drivers than the rear motherboard-mounted USB3 sockets. Google "usb front ports slow" for more on this. One thing to be aware of if you are using a PC box: the front USB3 sockets are often much slower than the rear (I experienced this personally). For comparison, it's about half the speed of my internal Samsung SSD but about a third faster than my internal HDD. This is nowhere near the claimed 495w/560r MB/s claimed speeds, but then real-world speeds never are. For info, my (BM recommended) Komputerbay 256 GB card writes at about 230 MB/s and reads at around 270MB/s. I don't believe that price is necessarily a good indicator of quality I suspect high prices are about branding as much as anything else. Blackmagic may be the only big name to have done any long-term reliability tests. I'm not surprised there are few long-term comparison tests given how niche the market is. They are therefore all way below the theoretical USB 3.0 data transfer capability, let alone 3.1. They use a SATA 3.0 interface capped to a theoretical maximum of 600MB/s. Re USB 3 readers: the CFast read speed is not limited by the USB standards but by the CFast cards themselves. The recent advent of CFexpress with its vastly superior speeds would suggest that CFast might well go the way of Betamax. On the other hand, I'm not sure it has much long term viability. Or if we want to be lighthearted “Alternate facts if you will”Ĭan't answer all your questions, but I chose CFast for the simple reason of having less exposed equipment on my camera. After doing research and testing myself and also taking heed to others who have used the same products, in this case SSD’s Vs Cfast have all come to similar conclusions. When I’m out in the field filming, the last thing I think about is a brand. I done care who makes what.if it works and it doesn’t give any issues. But In the end, YOU the user will corroborate what a manufacturer says or totally destroy it. Manufacturers of any brand can say one thing. ![]() Who are these players? Does Angelbird make CFast cards, or is it a niche marketer rebranding someone else’s product? Whose cards is it selling under the Angelbird name?Īnecdotal you say? Isn’t real world testing and usage from using both Cfast and ssd’s by many people here who have posted those conclusions based on different shooting conditions and cameras used, not fact? You seem to be looking for technical comparisons. Does Wise even make SSDs? It would be pretty funny if it turned out, as may be the case, that Wise SSDs are made by Samsung.ĭo we even know who actually makes CFast cards? Correct me if I’m wrong, but I assume that they are made by a small number of players in a small number of factories. Your recommendation of Wise suggests less than 100% faith in your own point, and that you regard this in part as a brand issue. Sorry, but I don’t regard anecdotal posts on a camera forum as hard evidence of very much, especially when there are lots of posts from people saying that they have full confidence in SSDs. These CFast cards sell at a significant premium, and if I'm going to purchase one I want more than "maybe" and "perhaps" and "probably", especially when "probably" isn't based on much :) What I'd like to know is whether anyone is finding that the difference in actual readers on the market makes a practical difference to their workflow. The theoretical speed difference for a given card is a matter of basic arithmetic. I understand what the difference is between USB-C 3.0 and 3.1 Gen. ![]() It's the kind of analysis that I would expect to see available, done by outfits such as AnandTech. As you say yourself, you don't know what testing most of them do. Similarly, I've seen no hard evidence that one or more of the approved CFast brands are built better or perform better than other brands. I've seen a bit of anecdotal discussion, but these discussions seem to be situations where an SSD may have been used beyond its approved limits. I have not seen any hard evidence that CFast cards are more reliable than SSDs with a Blackmagic camera, which is why I'm looking for some. Thanks, the problem is lack of actual evidence.
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