How much difference is there from 30 MB/sec vs 45 MB/sec vs 60 MB/sec?

11 years 9 months ago #242690 by Jeanne Merlo
Other than 15 MB/sec difference between each, how much noticeable difference is there between each of these? This speed difference is only noticed when transferring files off correct?


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11 years 9 months ago #242700 by Stealthy Ninja
Clearing buffers might be a bit quicker too.

Some cameras require a certain amount of MB/sec in order to record video. My video camera (Canon XF300) requires a 50MB/sec or higher card or it just won't work.
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11 years 9 months ago #242701 by geoffellis
My average raw file size is about 10MB... so

@ 30MB/s I could transfer 3 raw files per second
@ 45MB/s I could transfer 4.5 raw files per second
@ 60MB/s I could transfer 6 raw files per second

And no... It also refers to how fast the camera can write from the buffer to the card when you are taking pictures. You will get delays sooner with the 30MB/s card than with the 60MB/s capabilitiees

I should also mention be careful... as i dont know where you referenced MB/s from. There is a difference between MB/s and Mb/s. 1MB/s = 8Mb/s - people get this mixed up all the time.
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11 years 9 months ago #242702 by Stealthy Ninja

geoffellis wrote: My average raw file size is about 10MB... so

@ 30MB/s I could transfer 3 raw files per second
@ 45MB/s I could transfer 4.5 raw files per second
@ 60MB/s I could transfer 6 raw files per second

And no... It also refers to how fast the camera can write from the buffer to the card when you are taking pictures. You will get delays sooner with the 30MB/s card than with the 60MB/s capabilitiees

I should also mention be careful... as i dont know where you referenced MB/s from. There is a difference between MB/s and Mb/s. 1MB/s = 8Mb/s - people get this mixed up all the time.


I would assume the OP means Megabytes (MB) not Megabits (Mb). But assuming is dangerous on the internet. ;)
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11 years 9 months ago #242704 by geoffellis

Stealthy Ninja wrote: I would assume the OP means Megabytes (MB) not Megabits (Mb). But assuming is dangerous on the internet. ;)

I would assume that too... but generally speaking, in my experience... data storage is usually referenced in Bytes, and data transfer speeds in Bits. As he is talking about speeds in Megabytes im just not 100% sure if he`s asking the right question lol. There is no hard and fast rule regarding it, its just generally what seems to take place. To most people a B and b would be ambiguous, but anyone in DataComm would see a massive difference. so a simple copy error with capitalization could make a significant difference in the numbers/answer i provided.
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11 years 8 months ago #242730 by Justin

geoffellis wrote: My average raw file size is about 10MB... so

@ 30MB/s I could transfer 3 raw files per second
@ 45MB/s I could transfer 4.5 raw files per second
@ 60MB/s I could transfer 6 raw files per second

And no... It also refers to how fast the camera can write from the buffer to the card when you are taking pictures. You will get delays sooner with the 30MB/s card than with the 60MB/s capabilitiees

I should also mention be careful... as i dont know where you referenced MB/s from. There is a difference between MB/s and Mb/s. 1MB/s = 8Mb/s - people get this mixed up all the time.


Oh this is helpful to visualize :goodpost:

Very nice to meet you!
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