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posted 47 years ago by
JHBalaji
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SanDisk Extreme Pro 32 GB SDHC Class 10 UHS-1 Flash Memory Card 95MB/s $63.95 with Free Shipping from:
B&H
Adorama

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The Sandisk 64GB UHS-1 cards I bought from Amazon measure at 50 Read, 20 write, in the fastest adapter I have available (PCI express). I don't understand how these "extreme" UHS-1 cards achieve the speeds they quote with any camera or computer currently available...

the sandisk that were on sale during black friday are class 10 and UHS-1 as well but they only quoted 30MB/s for read. How could the same class SD cards have such a huge different in performance

You normally won't need these high speed cards unless you shoot with pro-DSLR cameras which can write bursts of Cache at 40-50 mbps.

And serious pro-DSLR owners use high speed CF cards which are faster than the SDHC cards anyway.

Amazon had the 64GB version for $94 about 2 weeks ago. Warm at best.

I shoot with a Nikon D800, and have both the Sandisk Extreme 45MB and the Extreme Pro 95MB, both 32GB.

Both cards were formatted on the D800 (FAT32), then reformatted in OSX to ExFAT.
Sandisk Extreme Pro 95MB - 72MB/s WRITE - 87.3MB/s READ
Sandisk Extreme 45MB - 41.2MB/s WRITE - 45.4MB/s READ

I found that if left in FAT32, the Extreme Pro will run these speeds
Sandisk Extreme Pro 95MB - 64.5MB/s WRITE - 89MB/s READ

Yes that is correct, almost a full 8MB faster when on ExFAT, although slower on the read.

So two questions should come up. The first is the card worth the extra $$ over the Extreme 45MB? I can't answer that for you, but hopefully my numbers will help you decide if that works for you.
The second is whether you should buy a 32GB or 64GB. 32GB will be SDHC and FAT32. 64GB will be SDXC and ExFAT. SDXC is a newer standard so it won't work on all devices, but the ExFAT is faster on WRITE then FAT32. Also note that ExFAT can have files larger than 4GB. Not sure if this means bigger video files, but who knows.

My advice, put in a Price Tracker for the Extreme Pro 64GB http://camelcamelcamel.com/product/B007NDL54C
You can see that it hit $94 on November 5, which is $30 more than this deal for twice the space.

I decided on keeping the 64GB and selling my 2 x 32GB Extreme Pro cards.

getafix said:   You normally won't need these high speed cards unless you shoot with pro-DSLR cameras which can write bursts of Cache at 40-50 mbps.
And serious pro-DSLR owners use high speed CF cards which are faster than the SDHC cards anyway.
I shoot a D800 with an Extreme Pro 95MB SD and an Extreme Pro 90MB CF Card. So in my case, the CF card is slower. I used to shoot with a D3s (D3 and D700) and racked up quite a bit of CF Cards. When the D800 came out, I sold all my CF Cards and bought an Extreme Pro CF. Then bought several SD Cards, 3 Extreme PRO and 5 Extreme. I find the convenience of shooting with SD outweighs the CF speed (if faster).
As most computers now have an SD Card slot, very convenient. I use them as Flash Drives to transfer files. While my CF Reader is USB2, the internal SD on my MacBook is PCIe, so much faster.
Video is a good reason to get a faster card, and faster cards tend to have better RAM chips in them, so they should outperform in the log run. Google some horror stories on cheap cards and losing pics, and you decide for yourself.

Oh, and if you are shooting JPG, don't bother with an Extreme PRO. That's a waste. If you shoot RAW then you already know which card to get.



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