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Author Topic: What UDMA-7 memory cards and camera specs offer  (Read 2363 times)

Bosman

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What UDMA-7 memory cards and camera specs offer
« on: March 31, 2012, 05:52:27 PM »
http://www.lexar.com/content/what-udma-7

What is UDMA 7?
Answer:
UDMA 7, which stands for Ultra Direct Mode Access 7, is the latest transfer mode under the UDMA interface. UDMA 7 allows a maximum transfer rate of up to 167MB/sec. This can be compared to the previous UDMA mode, UDMA 6, which allowed transfer rates of up to 133MB/sec.

So even Lexar is leaving room for a faster card by having a 150mb/s card instead of a 167 mb/s card. Sandisk is lagging behind a bit offering a max speed of 100 mb/s.

Theres a bunch of Canon Firmware updates to bring cameras up to udma 7 spec. 50d,5dm2,7d,1dm4, and prob others. I included links but they are not direct to them all sorry. If you have any of these cameras i would def get the update. I wish i could get one for my 1dm3...
Here they are:
http://www.learn.usa.canon.com/resources/blogs/2012/eos_5dmii_50d_firmware_update.shtml
http://www.learn.usa.canon.com/resources/blogs/2011/20110426_eos7d_firmware125.shtml
http://www.learn.usa.canon.com/resources/blogs/2011/20110601_eos_firmware_updates.shtml
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What UDMA-7 memory cards and camera specs offer
« on: March 31, 2012, 05:52:27 PM »

Bosman

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Re: What UDMA-7 memory cards and camera specs offer
« Reply #1 on: March 31, 2012, 07:02:14 PM »
Found this video testing diff cards out. The video is quite informative, seems 600x is best bang for your buck.
Canon 5D Mark III buffer Test CF & SD RAW Small | Large


Canon 5D Mark III buffer Test CF & SD RAW

firmware 1.0.7
RAW

CF Test
1000x Lexar Professional CompactFlash Card 150MB/s UDMA 7
average 26 frames

600x SanDisk Extreme Pro CompactFlash Cards 90MB/s UDMA 6
average 25 frames

300x Transcend SLC CompactFlash Card 45MB/s UDMA 5
average 17 frames


SD Test
633x Delkin Elite 633 SDHC memory card 80MB/s write UHS-I
average 15 frames
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Re: What UDMA-7 memory cards and camera specs offer
« Reply #1 on: March 31, 2012, 07:02:14 PM »