SanDisk Extreme 64GB USB 3.0 Flash Drive Model SDCZ80-064G-A75 SanDisk Extreme 64GB USB 3.0 Flash Drive Model SDCZ80-064G-A75

Pros: FAST, WOW fast, 143MB/sec sustained for an entire 22.6GB copy. (HP Envy 15 with Intel 520 SSD)

Cons: Not bootable. Try as I might I cannot get anything UEFI or otherwise to see this drive as bootable, even the MS USB Image tool wont see the drive as a bootable USB drive, I've tried NTFS, FAT32, GPT and MBR style partitions, it appears that the device isn't flagged as a USB drive, but it isn't flagged as a hard drive either, no BIOS will show it in the list of bootable drives. Very irritating.

Pros: Great Price. Working as it should

Cons: Haven't found any yet

Other Thoughts: This is Disappointed in WI. I had posted a few weeks ago about the drive not working.

Now I am Happy in WI. Got the replacement drive and it is working great. Newegg handled the return/replacement in a quick and efficient manner. No complaints. Glad I exchanged instead of getting my money back.

Pros: I am a "verified owner," but Newegg will only allow you to comment once as a verified owner and I have already done so.

I would like to put the negative comments on the SanDisk Extreme 64 gig flash drive into perspective for those just reading them. There are just 26 comments here, but there are 242 comments on another major etailer for the same SanDisk drive -- and on that site, this drive is rated 4.5 stars out of five.

So it appears that those who have experienced problems with the SanDisk Extreme represent a very small portion of a large universe of owners. I have two and both have been working fine.

Cons: None for me.

Pros: No cap design.........Woo Hoo

Cons: Had this for a week and it failed. Could not write to it. Could not format it in exFAT, NTFS or Fat32. Tried formatting from the GUI and command line. Tried 3rd part low level format tool. That also failed.

Other Thoughts: As a PC technician, I have used OTHER SanDisk drives for years without issue. This is my 5th SanDisk USB drive I have purchased in 5 years. Every other one is still working. You guys dropped the ball on this one. I should have heeded the other warnings here telling me this drive is trash. SanDisk you just lost my business.

Pros: I like the drive in general. The drive actually locks open so when you push it into the USB slot it doesn't retract.

Price was decent for a 64GB drive

Cons: Tried to copy files over to it and it stopped after a few and gave me error messages. From then on it would tell me the drive needed to be fixed when I would insert it. I would try to run the fix program and it would never complete it.

I hope the replacement doesn't have the same issues.

Pros: Fast transfer if it works

Cons: Poor quality control and cheap construction

Other Thoughts: Sandisk makes good products generally. The Extreme seems to be an exception. Speed is very important, but reliability matters even more. If you absolutely need a large, fast, USB 3.0 flash drive, go for the Lexar. If you can wait, look at the new Corsair, which is not yet widely available. If you buy the Sandisk Extreme, cross your fingers and prepare for the drive to fail. When the Extreme stops working, repair your registry but not by following the advice that's on the Sandisk website.

Pros: Three of the more popular **high performance** USB 3.0 flash drives are: the Kingston HyperX, the Lexar Triton, and the SanDisk Extreme. I ordered one 64 GiG version of each to benchmark (all formatted NTFS). Analyzing with CrystalDiskMark and AS SSD benchmark software, there was no single outright winner in all categories.

In the sequential read speed test, the Kingston HyperX was the clear winner (216.15 MB/s), followed by the SanDisk Extreme (179.01 MB/s) which edged out the Lexar Triton (177.20 MB/s) by a hair. All three were fast.

In the sequential write speed test, the Lexar Triton was the clear winner (127.50 MB/s), with the SanDisk Extreme second (118.34 MB/s) ) and the Kingston HyperX third (103.20 MB/s

In the 4K random read test, the Sandisk Extreme was the clear winner (9.130 MB/s) with the Lexar Triton second (7.970 MB/s) and the Kingston third (6.479 MB/s).

In the 4K random write test, the SanDisk Extreme measured an amazing (5.198 MB/s), while the Kingston measured (0.932 MB/s) and the Lexar Triton measured (0.379 MB/s).

Real world tests: In copying a folder with 8.24 GiGs of random information (video files, audio files, program files, documents, etc.) from a Crucial 256 GiG SATA III SSD, the SanDisk Extreme completed the task in 88 seconds, the Lexar Triton 132 seconds, and the Kingston HyperX finished in 161 seconds. The SanDisk Extreme was the overwhelming winner in this area.

(Notes: I ran each of the above tests 3 times on each drive and got results that varied as much as 5% from run-to-run. I am posting the best figures I recorded for each drive. Additional information: Lexar will soon be delivering their new P10 series of flash drives which have better advertised specs than any of the three drives I have tested here.)

Cons: See "other thoughts."

Other Thoughts: The Lexar scores points for elegance/style while the Kingston gets the nod for pizzazz/star-trek-look. The (relatively) plain Jane SanDisk loses badly in this department (appearance wise, you might say the Lexar is the Bentley, the Kingston is the Ferrari, and the SanDisk is the Ford Pinto.) The Kingston has a removable cap while the SanDisk and Lexar both have retractable plugs. Additionally, the enclosures of the Kingston and Lexar are of far "beefier" construction. On the other hand, the SanDisk is the lowest in price of the three (about 40% less than the Lexar and about $12.00 less than the Kingston) which makes it a comparative bargain with respect to price/performance. The performance of all three was (vastly!) superior to the cheaper USB 3.0 drives you normally find in warehouse clubs, office supply, or big-box stores.

Width may matter if your laptop has two USB ports that are side-by-side. The Kingston measured 0.9" (23.1 mm) wide, the Lexar comes in at 0.86" (21.9 mm), and the SanDisk is 0.84" (21.4 mm). All three would plug into the second USB 3.0 port next to a USB mouse connector on a HP dv7t laptop (with port spacing of 0.20"/5.1 mm at their closest points). None of the three (not even two SanDisk Extremes) would fit side-by-side in the same two adjacent ports. (Memo to laptop manufacturers: I don't fault the flash drive manufacturers here so much I do you. An additional 0.25" spacing between the USB ports would easily solve this problem.) Fortunately, many laptops have USB ports on both sides (albeit not all may be USB 3.0 ports).

The Lexar Triton and SanDisk Extreme both come with limited lifetime warranties; the Kingston HyperX has a 5 year warranty.

My conclusion: Each of these three drives has its particular strengths and weaknesses (but none of the weaknesses are deal breakers). In everyday use, the average consumer is unlikely to notice much in the way of practical performance differences between any of these three. I would unhesitatingly recommend any of these drives to friends.

Pros: There's nothing good to be said about this drive. NOTHING!

Cons: EVERYTHING...AWFALL!!! DOA out of the box…
This drive is no good. It didn’t work right out of the box. It froze my workstation at home and office. I am an expert techie and my workstations are all new, completely upgraded the office a month back and my home workstation I purchased everything from “Newegg” last month. Motherboard, CPU, RAM and all other components and the motherboard is USB 3.0 native and they are all running Windows 7 Ultimate x32 and x64 and this drive froze all the computers. This drive just doesn’t work, is a piece of garbage from SanDisk.

Pros: It works great after a month of use. I have written sever large Mkv video files around 15-30gbs. I did not check the actual speeds but each file only took 2-5mins to write for me.

Cons: None at all

Other Thoughts: I usually buy from newegg cause of the good review system and low prices but I purchased this USB drive at a local computer store. I was hesitant to get this USB drive cause of all the bad reviews but I guess it was bad batches cause mine works great on all formats.

Pros: Its soooo fast, 260MBreads/110MBwrites on my I5 ivybridge laptop and 220MBreads/190MBwrites on my I7 x79.

Cons: kind of expensive, big and ugly....

Other Thoughts: I have had this for a few months, has worked great so far, I'm surprised to see so many people having issues with these USB drives honestly. Also I have never formatted a USB drive with anything other than FAT32, so I can't comment on NTFS or exFAT, which from my understanding most devices can only read FAT32 format, for example car stereos...