Does anyone have any information about the performance degradation of the 1 TB and 256GB cards over time, especially as they heat up?
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I have both cards, so I can share some data. I ran the following tests in CrystalDiskMark and logged read/write speeds with HWiNFO64.
SEQ1M 8Q1T, 8 mins of read, 8 mins of write. Red is the 1TB card, green is the 256GB card.
SEQ1M 1Q1T, 8 mins of read, 8 mins of write. Red is the 1TB card, green is the 256GB card.
RAND4K 1Q1T, 5 mins of read, 5 mins of write. Red is the 1TB card, green is the 256GB card.
As an example, “SEQ1M 1Q1T” means 1 MB of sequential reads or writes with queue depth 1 and a single thread.
5 minutes of idle time was given between the read and write portions for each test. File size in CrystalDiskMark was always set to 1 GB.
Here are the actual logs generated by HWiNFO64: link. You’ll need this software to view the graphs.
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It looks like the 256GB card is just fast enough for my needs.
Good info. Thanks!
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Glad to help! Forgot to mention above, those two tests are sequential.
I didn’t initially realize that my data could affect purchasing decisions, so I think I’ll add some more comparisons soon.
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I ended up getting the 1TB just in case it slows down too much when it heats up 
Clearance is just purrfect.
It seems to be able to handle whatever format the camera throws at it, and when I’m done I just edit off the drive on the laptop (and still have nothing dangling out from the sides muhahaha).
I’ll have to do a full duration test to make sure but at 800 Mbps read and write I’m pretty sure it will hold up.
(I’m so greedy I already want another drive ).
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