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SanDisk - Ultra 64GB USB 3.0 Flash Drive - Black-Front_Standard

SanDisk - Ultra 64GB USB 3.0 Flash Drive - Black

Model: SDCZ48-064G-A46SKU: 9211078

Customer rating

Rating 4.8 out of 5 stars with 4972 reviews

98%
would recommend to a friend

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  • Rating: 5 out of 5 stars

    One caviat

    Posted
    BasilarchiaArchippus
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    Benchmarking this drive right out of the package may be misleading. I'd never bothered with benchmarking until about an year ago when I had some problems with a solid state drive. Since then I have played around with benchmarking various devices. When I bench marked this flash drive the results were terrible, barely better than my average 2.0 drives. At first I thought it might be defective but then I thought to check the 32GB version of this drive which I always thought was quite speedy. I'd purchased it over a year ago. So I benchmarked now and its average speeds were not real great but the interesting thing was that the first third of the drive was reading well over 120MB/sec, well above the advertised rate. The last two thirds were about as bad as my new 64GB drive. That's when I remembered the narrow 120MB/sec read spike at the very beginning of that 64GB drive. The software that comes on the drive? Then I wondered if you only get full speeds to data that's been written. That is, those parts of the drive that have been used, written to or written to and erased. To test this I filled the rest of the 32GB drive and then erased that added data. The average read speed for the entire drive was now 127.4MB/sec. I filled and erased the 64GB drive and it now reads 116.7. Not quite as good as the 32GB drive but I'm happy. I checked some of the poor reviews of this drive and see mentions of poor benchmarks. Maybe this was their problem too. I've had no problems with the 32GB drive and expect none with this one. Good drive. Got it on sale, so great price.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    SanDisk Flash Memory - ALWAYS My 1st Choice!!!

    Posted
    SpockCO
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I've said this before, and I WILL say it many more times AGAIN(!) ... SanDisk "flash" memory devices ARE the BEST FLASH MEMORY DEVICES YOU CAN BUY! I'll probably never buy any other manufacturer's flash drive if a comparable SanDisk product is available, price NOT withstanding! I LOVE: The compact design AND the retractable USB connector! AND, I HIGHLY RECOMMEND attaching a 16 - 20" lanyard to help keep it from getting lost deep in the pockets of your backpack/messenger bag! I MISS: Not having an "access" light to know when it's actually in operation, but this does seem to be a feature that is just going to go away on most flash drives, especially as they get smaller and smaller and smaller. I bought this particular flash drive as a backup and secondary storage device for my ASUS Transformer Book T100TAF, 2-in-1 Tablet with Keyboard Docking Station (1 GB RAM & 32 GB SSD built-in, and a 32 GB Micro SD Slot). ... Unfortunately, Windows 8.1 (and Windows 10 for that matter) WILL NOT ALLOW YOU TO MAKE A WINDOWS SYSTEM IMAGE BACKUP TO A FAT-32 FORMATTED FLASH STORAGE DEVICE - ONLY NTSF FORMATTED DEVICES CAN BE USED. ... So I used a 500GB "Winchester"-type portable hard disk drive to accomplish the backup. So now I have more than 58 additional gigabytes of storage for my "2-in-1" tablet! ... That's a WHOLE LOT OF music and photos and videos and documents and spreadsheets and etc., etc., etc. - Now, I'm good to go for years to come with about 90 additional gigabytes of storage (SanDisk Ultra 64GB USB 3.0 Flash Drive and a 32 GB Micro SD card) for my ASUS 2-in-1 Tablet! Thanks Again to SanDisk AND Best Buy for GREAT, Reliable, Compact Data Storage Devices at Incredibly LOW Prices!!!

    I would recommend this to a friend

  • Rating: 2 out of 5 stars

    Performance & Benchmarks Below Average

    Posted
    tjbIthaca
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    Disappointing, but adequate for moderate speed writes. Tested with Ubuntu Linux 14.04.2 on Sony VGN-NW270F using default Disks utility. My computer has USB 2 ports. Benchmarking parameters:: Transfer Rate Samples = 100, Sample Size = 10 MB; Access Time Number of Samples = 100. Results:: Averages: Write = ~12 MB/s Read = ~39 MB/s Comments:: Reads were fairly constant at ~39 MB/s with insignificant fluctuation. Writes spiked sharply between 12 and 7 MB/s. Access times were constant at ~0.99 ms. Conclusions:: I have a few PNY flash drives of the same capacity, purchased recently, that benchmark about the same on read and access, but are twice as fast on write. The waveform on the PNYs are square and may contribute to the better write speeds. The SanDisk had sharp points on the top and bottom of the waveform. I'm not an engineer, but I suspect the controller in the PNY flash drive may be more modern and advanced than the one in this specific SanDisk flash drive.

    No, I would not recommend this to a friend

  • Rating: 4 out of 5 stars

    Great Drive But Issue With Included Software

    Posted
    gargamel
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    This drive runs unusually hot for a plastic flash drive. Even sitting without reading or writing while plugged into a USB extension cable, the USB connector gets uncomfortably hot. No other flash drive I've tried has this issue, although I understand that some metal cased ones also exhibit this behavior. The second problem is that writes are slow, painfully so for small files. I should have paid more attention to the reviews here stating this fact. After doing some research, I bought the SanDisk Extreme CZ80 64 GB flash drive as a replacement. It runs much cooler, and the write speed is 5 times as fast for large files and 20 times as fast for small files (this is with both drives formatted as NTFS). I was even able to pick it up on a Daily Deal for only $7 more than the Ultra CZ48, but even if you have to pay twice as much it's worth it in my opinion. I don't recommend the Ultra CZ48, but I highly recommend the Extreme CZ80.

    I would recommend this to a friend

  • Rating: 2 out of 5 stars

    Good drive but encryption is lacking

    Posted
    KsPhotog
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    The drive is fast and works as any thumb drive does and there isnt much to say good or bad. I bought the drive because of the encryption to secure files when I carry the drive and thought that since this is SanDisk it would be well thought out. The encryption , San Disk Secure Access comes on the drive and it is a simple process to set up a password. When you do this you find out that this is the light version and for the full access version you need to buy the upgrade. I am reluctant to upgrade due to the poor workings of the light version such as transferring files. When I tried to transfer several word files by dragging them from the thumb drive back to the computer I found that I could only transfer one file at a time. This was very irritating and due to the process I missed file and it wasn't until later that I realized this. In my opinion they should give you a trial version of the full program instead of the limited light version.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    Great storage for quick access

    Posted
    MrBiggs
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    Not much to say, other than it works for my needs. First, the one feature anyone these days should be checking for in flash storage is making sure it is USB 3.0 compatible. With the amount of computers, tablets, etc. utilizing a USB 3.0 connection, you'll thank yourself for having the faster transfer speed, when moving something like a few movies before a plane flight. It'll cut down the transfer time substantially from a traditional USB 2.0 flash drive. In other words, spend the couple more dollars to get the faster speed and always spring for the most storage you can comfortably afford, as opposed to what you think you may need. Its easier to have the storage there, then need it and you have run out of space. SanDisk is one of the leaders in flash storage so quality and performance have been great. I personally hold this on a lanyard for work because I deal with constant file transfers and application downloads throughout the day. Works perfectly!

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    It does everything it's expected to do.

    Posted
    spikey27
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    This is typical of flash drives, easy to use, fast, and in this case it holds lots of data (64GB). Since this is used as a backup, I don't use it often, but so far it has worked well. As far as speed, I can't tell much difference between USB 3.0 devices (which this is) and the older USB 2.0 devices, apparently because of the way I use it. This is borne out on other reviewers' tests. They say it depends on the type of usage, and I believe them. One note: The manufacturer warrants these USB 3.0 flash drives for 5 years, whereas they only warrant their USB 2.0 drives for 1 or 2 years. The difference in price was only about $5.00. So for a little more, you get a faster drive, and a much longer warranty. I suspect changing the interface to USB 3.0 is not the only improvement inside. Touching the sides after usage seems to show the 3.0 devices don't get as warm, and that always leads to longer life in electronic equipment. I'm satisfied.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Fast drive that generates heat

    Posted
    ShopperInParadise
    • My Best Buy® MemberMember

    The drives are fast (> 100 MBytes/sec on read, ~30 Mbytes/sec on write but they get hot when doing large amounts of writes. I attempted to write ~30 GB of data to each of 5 drives simultaneously and after approximately two minutes the drives would go off-line. The problem was caused by overheating of the drives. I found that I needed to leave an empty slot between drives to allow the heat to dissipate. Without the spacing, my Anker hub was not able to adequately dissipate the heat. My other thumb drives don't have this thermal problem but then they don't transfer data as fast. Granted writing to 5 drives simultaneously is uncommon but my application is to distribute large files to many PC's via USB thumb drives. This is just something to keep in mind.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great value...imperfect design

    Posted
    Sarahbeth
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    I was thrilled to find such a great deal on this flash drive. So far it seems to be working just as I'd hoped, fast transfer of files. The largest I've transferred so far has been around 300 MBs so I can't speak to very large file transfer rate. My one complaint which is that the drive doesn't stay "in" with the drive looped onto a small key ring. The hole seems too close to the slider mechanism so any movement causes the drive to slide open. The purpose of this drive for me was for traveling daily to college classes and I didn't want a drive floating around loose in my backpack. I'm concerned long term about potential damage. I wouldn't purchase this particular model again for the design flaw but it's still a great value. I would recommend this with the caveat that it's best for at home or office use, not for daily travel.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Sandisk USB 3.0 64GB Red

    Posted
    Harold00
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    The sandisk usb 3.0 is lightweight and durable. I got it on sale which was much cheaper. It is lightweight and has a attractive shade of red. File transfer rates is 2 to 3 times faster than a usb 2.0. It has a maximum read speed of 100MB/S.ec The black Sandisk USB 3.0 comparable models come with a read speed of 80 MB/sec and 100MB/ sec. This is noticeable if you are transferring a large file. You can connect a lanyard as it does not come with one. I would have purchased a red 128GB or 256GB is there was one offered but the largest is 64GB. I do have a Sandisk USB 3.0 100 MB/sec in black. The USB C models are still a bit higher in price.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Gret bang per buck

    Posted
    RanTalbott
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I still mostly use the USB 2.0 Cruzers for archival backups to save money (I just leave the backup running in the background, so I don't care that it's slower). But these are better for "shuttle" use, even on a USB 2.0 system: about 50% faster on my 2.0 machine, and almost twice as fast on my 3.0 systems. Well worth the small extra cost when they're on sale. Weirdly, I found that the two Ultra red drives I tested were about 20% slower on USB 3.0 (same speed on 2.0), even though the USB vendor and product IDs say it's the same.

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Nice storage capacity - but a bad design.

    Posted
    Fotoflyer
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    I purchased the new SanDisk USB 3.0 flash drive because it featured a slot and button along the top, which extends and retracts the metal USB connector. Unfortunately, there is NO detent to lock the USB connector on this model. That means the USB drive slides in and out on its own when it's in your pocket . . . very handy for picking up pocket lint! Although I'm happy with the amount of storage it provides (at the sale price I paid for it), I am NOT happy with the way it's designed. I live in southern Arizona, and the fact that the Sandisk - Ultra 64GB USB 3.0 Flash Drive doesn't lock in either the closed or open position means that it allows dirt and dust to get into the business end very easily, whether you carry it in your pocket or clipped to your key ring!

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    No experience necessary; great sound from CD's

    Posted
    Normannewguy
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    Needed a jump drive because the new car we bought did not have a CD player and we have all our music on CD's. Talked with the car saleman and he told me how to transfer music to jump drive. Talked with Best Buy rep and he recommended this jump drive. Have started to transfer favorite CD's to jump drive and am pleased with Windows Media Player's ease of use to pick and chose what tracks I want to transfer. Also, found that having Internet running and using drop down menu on first track of CD will help identify CD and all the tracks. Have only had one problem with CD that we purchased from TimeLife that the Internet couldn't identify, so I had to type in all the track info. After transfer to jump drive, sound from car's sound system is terrific. Great purchase.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great choice!

    Posted
    Ejms
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I purchased this flash drive at the same time I was purchasing a new (expensive) laptop so I wouldn't have to worry about running out of space when I was backing things up. The laptop has a huge capacity though I wanted to store a TON of photos from multiple smaller flash drives I had to store in a fireproof safe. With all of the photos I stored on this drive I haven't even put a dent in its storage capacity! I did ask the BB sales associate that was helping me which brand he would choose and he recommended SanDisk and I'm very happy he did.The flash drive happened to be on sale so I jumped at the chance to get it as it is a trusted brand. I wish I would've purchased two at that price, though I will be purchasing more because it is worth it!

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    works fine, but one small quirk

    Posted
    bestbuyer
    • Verified PurchaserVerified Purchase
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    AS far as storing data, not much to say, all these SanDisk work fine, I've never had a problem. However, I was unable to back up my Mac using Time Machine, and then found out the reason was this SanDisk 3.0 Flash Drive. For some reason, if this SanDisk is plugged into my Mac, the Mac is always "indexing" the drive. When the backup process gets to try to backup this SanDisk unit, it stalls and will stay there stuck for hours and hours and never move. I found out I have to remove this SanDisk unit before I can back up my Mac. And obviously I cannot back up anything from this 3.0 Flash drive to my external drive. This happens no matter what kind of external drive I use. Maybe just something with my situation, but didn't have a problem with 2.0 flash drives.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    This product was exactly as pictured

    Posted
    JSOB
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    This item was purchased due to the purchase of a new computer for my wife; anniversary, birthday and Christmas gift. We purchased a Microsoft Surface book. We appreciate all the help that the staff offered to us. Unfortunately, one of the suggestions was that we use a USB to USB cord to transfer files from my wife's old computer to her new computer as if this special cord would allow us to click and drag items from one computer to the other. We did not know that we would have to copy a file to the desk top of the old computer to the desktop of the new computer...wasn't that easy! I only remember Eddie as being the computer tech salesman who passed that information to us. Unfortunately, it's not that easy!

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    works well, but...

    Posted
    theGretschProf
    • Verified PurchaserVerified Purchase

    As a university prof who does a LOT of video recording, I needed a drive to move from one place to another. 64 gigs was about as small as would be useful. I saw this and have used Sandisk before with satisfactory results. It arrived a few days later and I used it that evening. It worked well. I've used it numerous times since and has always performed well. I only have one issue and that may a deal buster for some people. I've already bent the USB prong. It doesn't appear to be all that durable. First of all the shape seems awkward. It wants to slip out of the hand. The case in which the actual drive slides in and out may be a little too loose. But the problems aren't significant enough for me to not consider purchasing the 128 gig version.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    The best flash drive I bought yet !

    Posted
    Chris

    This drive was reported by Crystal Disk Mark that it had a maximum speed of 165.7 MB/s in the test. I also transferred 21GB-ish of data from my 32GB Sandisk Cruzer Glide, which was a regular USB 2.0 Drive. That flash drive is a good one too. The data transfer took about 10 minutes! The time it took to transfer that data from my laptop to the 32 GB drive took about 25 minutes. I bought the USB 3.0 drive because I needed the space, and I just like sandisk. I have a 4GB sandisk Cruzer that cost $25.99 in December 2009 and it's still being used daily as my UBCD drive. Consider Sandisk for flash drives. however, it's also the warmest drive I have ever owned as it can get pretty warm when in operation, but not to the point of overheating.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    fantastic color

    Posted
    kreela
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    The cruzer is one of a number of flash drives you can choose at Best Buy. It sticks out like an extra thumb, and it only comes in 32 gb. I would give it 5 stars if I could get it in a larger size. No, it is probably not the fastest, but I have lost a number of flash drives at people's houses. No more! I can see it 6 feet away, and that counts more than speed. It inserts and removes easily. Consider that before you purchase one of those flash drives designed to lie flush with the laptop. And it has a large hole to which I can easily attach a clip or carbide. I carry it clipped to my pants or laptop bag when I travel, and I always have my tools handy.

    I would recommend this to a friend

  • Rating: 2 out of 5 stars

    Had to buy Flashdrive

    Posted
    ctrich
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I had problems with my computer where the mother board crashed. Brought it in to Geek Squad $100 later , mother board fried, Do you want this info backed up? I guess as I wasn't sure what I might have on there ok another $100, Oh by the way you need to purchase a Flashdrive and we happen to have one on sale another $18. After $218.00 Had to purchase new computer, not tech savvy so I had to call HP several times to get it going and have only data recovered from flash drive NOT ANY PROGRAMS. I guess my info is on the new computer, now if I can just find it ! GEEK SQUAD OVERPRICED.. SERVICES OVERPRICED, AND SHOULD HAVE INCLUDED THE FLASH DRIVE FOR THE PRICE.

    No, I would not recommend this to a friend