Maximum write speed to SDXC card

FScott

New member
What is the maximum speed a D7500 can write to an SDXC card? I understand it can also write to UHS-II cards, just not at full speed. I am wondering if there is any benefit to using UHS-II cards over UHS-I.
 
I have been using SanDisk Extreme Pro 32GB SDHC UHS-I Cards in my D750 for the faster Write speeds. Most cards you see only list the read speed. In other words how fast they can transfer to the computer. We don't care about that The write speed controls how fast you can write to the card. Good for keeping the buffer as empty as you can so you can shoot faster.

The card I referenced


  • Read speeds of up to 95MB/s; write speeds of up to 90MB/s
  • UHS speed Class 3 (U3) and video speed Class 30 (V30) for 4K UHD video
 

mikew_RIP

Senior Member
Welcome to the forum.are you thinking about getting a D7500 and wondering about your current cards,you probably wouldn't notice the difference in normal shooting between most cards,but with the D7500 only having one slot i think i would get a new card and that would be the one Don mentioned.
 

lokatz

Senior Member
Couldn't find any details on the U.S. site, but at least on the German website, Nikon explicitly shows the D7500 as UHS-I compatible, with no mention whatsoever of the faster UHS-II standard. That means that if you use a UHS-II card in the camera, it will work but give you no advantage. I would therefore not spend the extra money.
 
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Ironwood

Senior Member
I read somewhere that in the camera you will only get UHS-1 speeds, but you will get the UHS-2 transfer speed to your computer if you have the compatible card reader.
 

lokatz

Senior Member
I read somewhere that in the camera you will only get UHS-1 speeds, but you will get the UHS-2 transfer speed to your computer if you have the compatible card reader.

That doesn't sound right. Nikon states that the D7500 has a "Hi-speed USB" connection, which is a clever way of concealing the fact that the camera supports only USB 2.0 (Hi-speed) but not 3.0 (SuperSpeed). USB 2.0 has a maximum data transfer rate of 40 MB/s, which is already lower than the UHS-I maximum of 50 MB/s (versus the theoretical UHS-II max of 312 MB/s). Accordingly, the USB connection is the bottleneck and using UHS-II cards will not speed up your image transfer to the computer.
 

Ironwood

Senior Member
I won't argue with you about it, because I don't remember the details, and I read it on the internet, and you can't believe everything you read.
I'll have a bit of a look around and try and find the story, but I won't be holding my breath.
 
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