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SanDisk Ultra 64GB (SDCZ48-064G-U46) USB 3.0 Flash Drive Review

  1. Introduction, Packaging and Specification
  2. Test Bench and Methodology
  3. 8MB ATTO Benchmark
  4. CrystalDisk Mark Benchmark
  5. Transfer File Tests
  6. Conclusion
  7. View All


SanDisk sent their Ultra 64GB USB 3.0 make of their ultra series flash drives, which is advertised to be up to 4 times faster than USB 2.0 drives in comparison to their Cruzer USB 2.0 counterparts. However for such flash drives, any brands mostly point out the read speed. For such larger-than-32GB flash drives, you would obviously expect quicker write speeds as well especially when you’re moving a large file.

Moving on, the packaging is pretty straight forward. At the back there’s an info that you get 5 years warranty on this drive. This drive from SanDisk is retractable type design which is sort of shaped like a thumb. Because, well- you know, its a thumb drive. Get it?

ba dum tus !

Sandisk_Ultra_3.0_05

Sandisk_Ultra_3.0_01Sandisk_Ultra_3.0_03

The flash drives comes in a black casing. The retraction works the way it should. There’s really nothing much to say here.

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Sandisk_Ultra_3.0_07Sandisk_Ultra_3.0_08

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It gives me great pleasure to mention this every time I put up a review. Thanks to the hardware support by Asus, Gigabyte, Kingston, Western Digital and Coolermaster who give me hardware support by updating my test rig no strings attached. It helps me to test their and other manufacturer’s hardware in a proper way. Thumbs up to these guys! The following hardware is provided by the followed manufacturers:

  • Gigabyte India for providing Gigabyte 890GPA UD3H Rev 1.0 motherboard
  • Asus India for providing Asus 990FX Sabertooth motherboard
  • Kingston Taiwan for providing hardware support with memory kits and SSD drive.
  • WD India for providing WD 300GB HLFS Velociraptor Hard Drive.
  • Coolermaster India for providing Coolermaster GX450 RS-450-ACAA-D3 Power Supply
Test Setup for: SanDisk Ultra 64GB (SDCZ48-064G-U46) USB 3.0
Motherboard+ Processor Gigabyte 890GPA-UD3H Rev 1.0+ AMD 965BE
Memory Kingston HyperX BLU 1600MHz 8GB DDRIII
Primary OS drive WD 3000HLFS Velociraptor 300GB/WD 320GB BLUE 320AAJS
Power Supply Corsair TX750
Chassis
OS Windows 7 Ultimate 64Bit SP1

The Benchmarks that I am using are as follows:

ATTO Benchmark Test File Size= 0.5 to 8MB- Read and Write Pass 3

CrystalDisk Benchmark with Pass 3, each with 5 re-runs 1000MB File Size

Transfer Tests: 1.34GB Assorted Photos transfer Test, 11.34 ISO File Transfer Test and 1.27GB Compressed Data File Transfer Test with TeraCopy

The drive was first stress tested using Anvil Endurance. Unlike via SATA III bandwidth, Anvil takes time to do stress testing on flash. So, the stressing testing that I use is 2 loops that creates 99999 files with 1MB file size with 12MB of free space. The drive is formatted in exFAT mode before stress testing is done- and no secure erase is done to the drive.

Do note that all flash drives are first stress tested using ANVIL endurance testing for a day and then given a secure erase and reformatted to ex-fat format before benchmarking to rule out any faults/ defects.

atto

The write speed is bad. It’s around 10MB/ Sec.

ATTO_8MB_Write

The poor performance is pretty clear even if you compare it with smaller file size transfers.

ATTO_8MB_Read

The smaller file size writes have little or no difference, but when it comes to larger, it goes head-to-head with Corsair Survivor Stealth, but Transcend JetFlash 780 is between against the two.

cdm

CDMRead

CDMWrite

Transfer Tests

These drives have VERY bad writes, something that one shouldn’t see in a USB 3.0 flash drive.

India U.S. U.K.
Rs. 2,849/- $38.95 £35.05

  • 5 Years Warranty
  • Retractable design
  • Bad write performance
  • Not recommended for frequent file transfer purposes
SanDisk sent their Ultra 64GB USB 3.0 make of their ultra series flash drives, which is advertised to be up to 4 times faster than USB 2.0 drives in comparison to their Cruzer USB 2.0 counterparts. However for such flash drives, any brands mostly point out the read speed. For such larger-than-32GB flash drives, you would obviously expect quicker write speeds as well especially when you’re moving a large file. Moving on, the packaging is pretty straight forward. At the back there’s an info that you get 5 years warranty on this drive. This drive from SanDisk is retractable type…

Review Overview

Performance - 4
Storage Space - 8
Overall Value - 5

5.7

BBQ Score

Summary : It does use a retractable design followed by 5 years warranty period label, but in reality the write speed is so bad, it shouldn't be labeled as USB 3.0, rather its a drive that happens to have a blue coloured connector. The read speed is mediocre, so for such tasks it shouldn't be an issue. Be warned, imagine transferring a single large file. You end up waiting for VERY LONG time. It comes with a 56.3GB of formatted space. Expect to see this drive, at a bargain bin near you exactly the way we still Find SanDisk Cruzer Blade USB 2.0 series even now.

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