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LesT
Lives in
Bracebridge, Canada
Works as a
Media Corporation Owner
Has a website at
www.thessdreview.com
Joined on
Nov 4, 2016
About me:
Tech Guru, Photography, Nature and Travel... |
Comments
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(unknown member): It is really annoying when CFExpress brands are telling you in their marketing the peak speeds only...
When reality is that Petapixels test shows these specific card(s) actually performs at less than half the advertised speed at around 800MB/sec.
Such marketing comes really close to purposely misleading the customer.
If I may, your testing is more compatibility-centric and you should reach out to the CFExpress card manufacturer with your findings to ensure it is a constant and not just your equipment. I have tested all Delkin and ProGrade cards and can confirm that their sustained write performance is up where it should be, both holding decent temps. In fact, I use the ProGrade Cobalt 650 in my R5 and it has gotten plenty of use in the last year plus. I test with a CFExpress card reader secured directly into a PCIe 3.0 AIC card (40Gbps) so the result is as pure as it gets. I confirm using different readers at both TBolt 3/4 (40Gbps) and USB 3.2 x2 (20Gbps). I haven't tested Angelbird...
thx1138: Performance seems excellent, but what are the operating temps during sustained writes? The Delkin Blacks only get to about 45C, some other brands get to 85C, which is simply outrageous.
Yup Delkin is 45 dead on... I think you are looking at my charts lol. 68DegC is as high as I could push the Diamond...which is actually not bad at all.
(unknown member): It is really annoying when CFExpress brands are telling you in their marketing the peak speeds only...
When reality is that Petapixels test shows these specific card(s) actually performs at less than half the advertised speed at around 800MB/sec.
Such marketing comes really close to purposely misleading the customer.
This has been standard in the storage industry since the beginning of time. Manufacturers use high sequential reads and writes as there base performance...because that is the highest it can go. As for digital media storage, sustained writes just came in with the release of the new R5 and the necessity for the drive to perform at VPG 400 very least.
Have this card in hand as well as just about every other on the market and it is pretty much the best there is if you are looking for just that. Speeds as advertised just below 1900MB/s and sustained writes by my testing sit at 1.53GB/s. I test by moving an 85GB 8K file from one spot on the disk to another. I would post the graphic but cannot in these comments for some reason. Average temps during such testing has dropped significantly compared to Lexar (and many other companies) initial release and the hottest I could push it was 68DegC.
Have one in hand. Nice and the power brick is a pain but this wouldn't be possible powered by bus alone.
It's here. Shipped from Camera Canada to me today; should be here Wednesday.
LesT: You gotta ask yourself what the heck Sony was thinking here, considering they are very minimally moving up from their XQD as it sits and have fallen out of the realm of real storage speeds with other cameras now making CFExpress Type B common. This might also class as the 8-track tape of storage.
I do agree with you there. That is why I spoke to the possibility of SD firmware upgrades since Type A is interchangeable. Having a very prominent background in the storage industry however, I think this will fade just as we see in all storage; everyone wants the biggest and fastest. The step up one will see in camera features, video and photos from a faster card are enormous, hence why the gravy train is carrying Type B right now.
LesT: You gotta ask yourself what the heck Sony was thinking here, considering they are very minimally moving up from their XQD as it sits and have fallen out of the realm of real storage speeds with other cameras now making CFExpress Type B common. This might also class as the 8-track tape of storage.
My point is this. And listen carefully. Type A will be short-lived as mSATA was, leaving clients who bought into it hanging. Then again. That's Sony now isn't it historically.
LesT: You gotta ask yourself what the heck Sony was thinking here, considering they are very minimally moving up from their XQD as it sits and have fallen out of the realm of real storage speeds with other cameras now making CFExpress Type B common. This might also class as the 8-track tape of storage.
The only way this might work would be is if a simple firmware upgrade to present SD card slots could mean faster Type A speeds. If you understand storage at all, this is tantamount to Sony bringing out a 1GB/s mSATA card when the rest of the world is moving to M.2 SSDs. Just to ensure you don't bring up the standards association as you did below, both mSATA and M.2 were introduced... mSATA is now past tense.
LesT: You gotta ask yourself what the heck Sony was thinking here, considering they are very minimally moving up from their XQD as it sits and have fallen out of the realm of real storage speeds with other cameras now making CFExpress Type B common. This might also class as the 8-track tape of storage.
Except.... why would they go Type A when Type B is the new standard? Doesnt make sense at all but to tie people into their cameras. Are they going to upgrade their XQD to Type A since it is the same card? And then, well why dont we go Type B since it is still the same card?
You gotta ask yourself what the heck Sony was thinking here, considering they are very minimally moving up from their XQD as it sits and have fallen out of the realm of real storage speeds with other cameras now making CFExpress Type B common. This might also class as the 8-track tape of storage.