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Author Topic: Speed test 32gb Sandisk Extreme III in Sound Devices 788T  (Read 4797 times)

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Offline blee421

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Speed test 32gb Sandisk Extreme III in Sound Devices 788T
« on: May 22, 2009, 08:02:37 PM »
My speed test for the 32gb CF card was 13.8 MB/s.

My 8gb card was 11.7 MB/s.

The HDD speed was 22.4MB/s.


Microtrack 2496 for patching  :)

Offline F.O.Bean

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Re: Speed test 32gb Sandisk Extreme III in Sound Devices 788T
« Reply #1 on: May 22, 2009, 08:33:14 PM »
My speed test for the 32gb CF card was 13.8 MB/s.

My 8gb card was 11.7 MB/s.

The HDD speed was 22.4MB/s.




DIZAMN!!!! I need to run my own speed tests on my CF Card/INHDD :)

Maybe the 788T writes alot faster than the rest of the 7-series ???
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Offline notlance

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Re: Speed test 32gb Sandisk Extreme III in Sound Devices 788T
« Reply #2 on: June 01, 2009, 12:02:34 PM »
Here's my post from the thread where we got OT and started talking about CF card speed:


This question of CF speed and 7xx boxes seems to keep coming up.  As I said above, I have never had a problem with CF speed on either a 702 or a 788T.  That said, I have not tried every available CF card.  But here is the data on the cards I do have, listed in order from slowest to fastest:

Card                             size    "speed"         788T speed test results

Kingston Elite Pro           32GB    133x              4.8 MB/sec
AData Speedy                16GB    unknown         6.4 MB/sec
AData Speedy                 4GB     unknown         7.2 MB/sec
SanDisk Ultra II              2GB      unknown        7.8 MB/sec
SanDisk Extreme III        16GB     unknown       14.0 MB/sec

Recording 24 bits at 96000 samples/sec is (from the SD 788T v1.65 manual, page 101):
(24 x 96000) / (1048576 x 8bits) = 0.275 MB/sec/track (rounded)

Recording 8 tracks of 24/96k results in a data rate of 0.275 MB/sec/track x 8 tracks = 2.2 MB/sec

As you can see, the slowest card listed above (4.8 MB/sec) should be fast enough.  As a test, I used the "slow" Kingston Elite Pro 32GB card to record about 3.5 hours of 8 track 24/96 without any CF failures or warnings.  After inspecting and listening to the sound file, I could not find any errors.  The card was newly formated and so not fragmented.  If the card had been highly fragmented, maybe my results would have been different.

Now I do not own nor did I test a SanDisk Extreme III 32GB card, but I suspect it is not much slower than the 14MB/sec 16GB card I did test.  In other words, the SanDisk Extreme III 32GB card should work fine for 8 tracks of 24/96k, IMHO.

I have noted that my 788T will write faster to the same CF card than will my 702.  However, both recorders can write fast enough to any CF card I own to be able to record at the recorder's highest data rate (i.e. 8 x (24/96) for the 788T or 2 x (24/192) for the 702).

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Re: Speed test 32gb Sandisk Extreme III in Sound Devices 788T
« Reply #3 on: November 09, 2010, 08:16:04 AM »
hi ::)

 

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