Canon EOS-1D X Mark II To Feature CFast & CF Slots [CR3]
- By DudeInTheSky
- EOS Bodies
- 96 Replies
Lots of misinformation in this thread! And some good info too. Some points about CFast 2.0 and XQD and CF.
1. CFast 2.0 is here and now and it works. So is XQD 2.0. (I own CFast 2.0 cards and use XQD cards too...) CFast 2.0 cards and XQD 2.0 cards are right now pretty much on par performance & price wise. Just above 400Mbytes/s write. CF is much slower. I barely get 100Mbytes/s write out of my 1066x CF cards.
2. CFast 2.0 is based on SATA 6Gbit/s. SATA is EOL'ed, so once faster memory cards are desired it will be a new type. So the CFast 2.0 cards you buy right now are pretty much as fast as they will ever get. My guess is 3-5 years until this standard hits the wall, but could be sooner.
3. XQD 2.0 has two lanes of PCI-Express 2.0, so should be upgradeable to PCI-Express 3.0 and then to PCI-Express 4.0. And possibly add more PCI-E lanes if needed. So XQD 2.0 has 1000MBytes/s interface speed now. 4000MBytes/s (or even faster with more lanes) later, with backwards compatibility very likely. In other words: Your memory cards will last a long time if the XQD standard is maintained. My guess is 10 years, maybe 15 for this standard.
4. CFast 2.0 is much more reliable than CF (Yes, that's my opinion based on theory and my real life experience, but just the frail mechanical 50pin design of the old CF should speak for itself... it sucks!) CFast 2.0 is still missing a write protect switch, which is not good.
5. Right now only CFast 2.0 Sandisk 64GB and 128GB work in Canon C300mk2. They are also the only two memory cards approved by Canon for this camera. My colleagues who bought Lexar CFast 2.0 cards have reported write errors and lost footage. Both the discontinued 3400x and the new Lexar 3500x. It's very possible that we will only have one brand and two capacity options of CFast 2.0 cards available in the beginning for this new Canon 1D stills camera! (Hopefully more cards will work!!!!)
6. Neither CFast 2.0 nor XQD 2.0 are proprietary formats. They are both open formats. Right now there's limited availability of cards that actually work in various cameras for both standards. With Canon C300mk2 being the most limited with only Sandisk CFast 2.0 64GB & 128GB working.
7. Currently both memory card standards are limited by flash memory heat generation. This gives a small advantage to CFast 2.0 since those cards are a bit physically bigger so more space to dissipate heat. This year (2016) will see the release of products with new memory technology (Intel/Micron 3DxPoint). If we are to believe the specs, we are soon to get memory cards limited only by the interface speed. Hence, XQD could end up with a significant speed advantage 10 months from now. This, of course, remains to be seen.
Hope that helps a little.
1. CFast 2.0 is here and now and it works. So is XQD 2.0. (I own CFast 2.0 cards and use XQD cards too...) CFast 2.0 cards and XQD 2.0 cards are right now pretty much on par performance & price wise. Just above 400Mbytes/s write. CF is much slower. I barely get 100Mbytes/s write out of my 1066x CF cards.
2. CFast 2.0 is based on SATA 6Gbit/s. SATA is EOL'ed, so once faster memory cards are desired it will be a new type. So the CFast 2.0 cards you buy right now are pretty much as fast as they will ever get. My guess is 3-5 years until this standard hits the wall, but could be sooner.
3. XQD 2.0 has two lanes of PCI-Express 2.0, so should be upgradeable to PCI-Express 3.0 and then to PCI-Express 4.0. And possibly add more PCI-E lanes if needed. So XQD 2.0 has 1000MBytes/s interface speed now. 4000MBytes/s (or even faster with more lanes) later, with backwards compatibility very likely. In other words: Your memory cards will last a long time if the XQD standard is maintained. My guess is 10 years, maybe 15 for this standard.
4. CFast 2.0 is much more reliable than CF (Yes, that's my opinion based on theory and my real life experience, but just the frail mechanical 50pin design of the old CF should speak for itself... it sucks!) CFast 2.0 is still missing a write protect switch, which is not good.
5. Right now only CFast 2.0 Sandisk 64GB and 128GB work in Canon C300mk2. They are also the only two memory cards approved by Canon for this camera. My colleagues who bought Lexar CFast 2.0 cards have reported write errors and lost footage. Both the discontinued 3400x and the new Lexar 3500x. It's very possible that we will only have one brand and two capacity options of CFast 2.0 cards available in the beginning for this new Canon 1D stills camera! (Hopefully more cards will work!!!!)
6. Neither CFast 2.0 nor XQD 2.0 are proprietary formats. They are both open formats. Right now there's limited availability of cards that actually work in various cameras for both standards. With Canon C300mk2 being the most limited with only Sandisk CFast 2.0 64GB & 128GB working.
7. Currently both memory card standards are limited by flash memory heat generation. This gives a small advantage to CFast 2.0 since those cards are a bit physically bigger so more space to dissipate heat. This year (2016) will see the release of products with new memory technology (Intel/Micron 3DxPoint). If we are to believe the specs, we are soon to get memory cards limited only by the interface speed. Hence, XQD could end up with a significant speed advantage 10 months from now. This, of course, remains to be seen.
Hope that helps a little.
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