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SanDisk Ultra 32GB USB 3.0 Flash Drive Model SDCZ48-032G-A46
  • Verified Owner
  • Owned For: 1 month to 1 year

1 out of 5 eggs Not Very ULTRA 10/28/2013

This review is from: SanDisk Ultra 32GB USB 3.0 Flash Drive Model SDCZ48-032G-A46

Pros: Sandisk name, and hopefully, reliability.

Cons: Not the performance expected from Sandisk.

Other Thoughts: Write speed is pitiful!

Using the ATTO benchmarking software, the best the SanDisk could muster was 10.9 MB/s for an 8192KB test file. Read speed topped out at 79.5MB/s for a 1024KB file. Using the exact same testing platform, software, and port, my two-year-old Corsair Voyager produced its best write benchmark of 14.2MB/s with an 8192KB test file, and its best read speed of 71.0MB/s with a 4096KB file. I expected better from the brand new SanDisk device. The 30% write speed advantage of the Corsair may not seem like much, but it is VERY noticeable when writing large files (like movies).

I thought that maybe I had received a dud or an old rev flash drive. So, I submitted a Support Ticket at the SanDisk Technical Support web page to voice my concerns.

The response from Marc J., SanDisk Technical Support:

"We currently do not advertise the write speed of the SanDisk Ultra USB 3.0 flash drive product. Our advertised read speed is up to 80MB/s which is 4 times faster than our Cruzer USB 2.0 drives. There are several factors that can affect the performance of your drive and are specific to the host device or in this case the desktop PC that you are using.

As per the ATTO Benchmarking result sent, it seems to be within the specifications for the USB 3.0 Flash Drive."

Well it’s no wonder they don’t advertise the write speed!

I found Mr. J’s last sentence somewhat insulting. The test platform was the exact same for both the Corsair and SanDisk drives. Granted, the Corsair was an 8GB device, and would require two fewer address bits, but that would only be a factor when filling the devices to capacity. A 30% performance penalty is just too much.

Perhaps instead of being disappointed in SanDisk, I should be more enthused about Corsair!

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Rosewill METAS BLACK Rigid Aluminum Body and ABS plastic top cover 3.5
  • Verified Owner
  • Owned For: 1 month to 1 year

Pros: Good looking, solid, easy to clean, USB3.

Cons: One died: Not recognized by either of my two desktops. The other enclosure is still working (for now).

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Douglas S.'s Profile

Display Name: Douglas S.

Date Joined: 01/17/04

  • Reviews: 2
  • Helpfulness: 1
  • First Review: 06/04/13
  • Last Review: 10/28/13
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