Now This Is A Fast Card – SanDisk Extreme Pro
Extracted from my CNET Asia Blog Article of the same name.
Last week, I was asked to test drive the all new SanDisk Extreme Pro CompactFlash Card, thanks to the guys at TEXT100 HKG (great PR firm in Hong Kong). As an amateur photographer, by no means would I pass on checking out how fast this new memory card claims, that being 90MB/sec.
So how fast is this card… according to SanDisk –
- its reading and writing performance are up to 90MB/sex (600x)
- UDMA 6 enabled (works in all UDMA mode)
- Power core controller & enhanced super-parallel processing esp invented by SanDisk to increase the card’s performance level
Well, I put it up for some home-made testing of mine to check it out. I conducted a few read and write tests and I used the older generation SanDisk Extreme IV and the SanDisk Extreme FireWire Reader to benchmark the results.
For each full frame pic I take on my Sony A900, the size of the RAW file is around 37.6MB. I switched the shooting mode to burst mode and took 10 pictures in a roll. The average writing speed after 10 trials are as follow –
SanDisk Extreme IV 16GB – 11.9 sec
SanDisk Extreme Pro 16GB – 9.4 sec
Not bad for writing speed. In fact, this new Extreme Pro is whopping fast. Given the price and the storage size (64GB being the highest), it is the ultimate dream card when it comes to taking large picture file size and large video files.
Next up I tried out the read and writing time in copying 342 picture files (11.9GB) to and from my computer and the results are as follow –
SanDisk Extreme IV 16GB
- writing to card – 13 minutes 6 seconds
- reading from card and copying to PC – 7 minutes 16 seconds
SanDisk Extreme Pro 16GB
- writing to card – 12 minutes 48 seconds
- reading from card and copying to PC – 8 minutes 14 seconds
Looking at the read and write tests results, one might ask shouldn’t the more expensive Extreme Pro be a lot faster than the old Extreme IV? The answer is yes, the faster Extreme Pro do read and write faster but in order to see the results, it does depends on what kind of card reader you are using. SanDisk can roll out even more faster cards but they do need a fast reader as well. The 45MB/s FireWire Reader from SanDisk surely cannot catch up anymore.
SanDisk, hope you dig this.
One of my reader, David Golden, sent me an email pointing out the the card performance is most likely optimized for high performance burst mode as your statistics indicate. The sustained write performance (copying 12 GB of data to the card) is not nearly as important. Thanks David for your input.
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