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Mushkin Enhanced Ventura MKNUFDVU120GB 120GB USB 3.0 Solid State Drive
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- Capacity: 120GB
- Read Speed: up to 445MB/s
- Write Speed: up to 440MB/s
- Interface: USB 3.0 (backwards compatible to USB 2.0)
- Fastest USB Drive on the Planet
- Assembled in the USA
- Dimensions: 93 x 13.25 x 24mm
- 2 Year Warranty
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The Ventura Ultra is the fastest native USB 3.0 Flash Drive on the planet! The new Ventura Ultra USB 3.0 features a high-speed 8-channel architecture that provides blazing fast USB 3.0 data transfer speeds and is backwards compatible with USB 2.0. The Ventura Ultra USB 3.0 is the perfect solution for expanding a notebook's storage while on the go. The durable, light-weight Aluminum housing, along with its max read speed of 445 MB/s and max write speed of 440MB/s makes our Ventura Ultra line a favorite of consumers looking for fast, reliable, and portable data storage.
Top customer reviews
after being used for awhile.]
This device works quickly as long as it is cool for sequential transfers. When it heats up, it drops to about 1/2 USB 2.0 speed. My intended use was to make a portable bootable O/S for recovery, etc, specifically Windows 10 Enterprise "To go" (Portable workspace). Initially it worked great for 3 or 4 weeks. I then started getting "hangs". There was also filesystem corruption on CHKDSK.. I reloaded the Windows OS image from a drivesnapshot (www.drivesnapshot.de) backup back to the USB drive.. Shortly started getting hangs and filesystem corruption again. This also happens with the 240GB VisionTek 240GB device, which I believe is the same device, different brand. The VisionTek also worked fine for 3 weeks or so running Windows 10 togo OS, but then it also starting getting hangs and filesystem corruption just like the Mushkin.
My hunch is that there is a design bug in the firmware in the device controller. The device works flawlessly (my hunch) for awhile. Active regions in the filesystem (metadata, etc), get written very often, followed my immediate re-reads. This eventually results in the "wear leveling" firmware to get invoked, which maps out (or moves out) the "hot" sector with a fresh one, with a low write count. My guess is that while this operation is being performed the OS re-reads the sector while the wear-leveling is in progress, and receives bogus data, thus corrupting the filesystem and crashing the OS.
It is easy to reproduce. I used both Windows 10 Enterprise TOGO X64. and Windows 10 PRO X64. If using Windows 10 PRO, one must install it first onto a regular (non USB) drive, and then image it over to the USB device. It will boot and run fine at first. Download and install Malwarebytes trial. Now startup full virus scans of the installed OS using both Malware bytes, and Windows Defender (part of Windows).
Things work fine for six or seven passes. At this point some sectors may be ready for wear-leveling, and the hangs, and filesystem corruptions start. It takes an hour or two and is completely reproducible. After a filesystem corruption, I reload the USB with a fresh image of the same OS installation. (the filesystem hotspots are in the same place). Even after reloading the USB, it will be lucky to make it one pass through the virus scans before crashing/corrupting.
However, when this device (after failing OS/corruption) is used for "normal" USB type operations (not running an OS), such as saving a backup image, it works fine at full speed. Backed up data to the USB device, comes back with good checksums.
I opened a case with VisionTek customer service, and updated it a few times, requesting that they notify engineering of this. I have heard nothing back. I even gave them the procedures to demonstrate the corruption.
If I did not need to use this device to run a bootable OS, I would give it four stars.. with the only other issue being the
large slowdown when it heats up on large transfers. If you are only doing a few GB, then it would be 5 stars.
Also, one can take a "regular" SATA SSD drive (e.g. a Samsung), put it in a USB 3.0 adapter, and plug that in to a USB port,
and run the same OS tests above, and it will run fine for days with no corruption. The test machines I used were only USB 2.0,
which might indicate that the wear-leveling operation has a wide window (milliseconds?)
As a start, the read/write speed gets nowhere near the advertised 400MB/s. The speed I was getting was only about 220MB/s for read, and 120MB/s for write for actual applied performance (large file copying, not from any benchmarking software). At first, I thought to myself this speed is still decent for the capacity and for what I paid. However, I quickly realized how big of a mistake this purchase was after a few minutes of using the drive.
The drive's case is made of thick and tough metal. They made it this way not to make it durable; it's solely for the sake of heat dissapation. The drive's casing still doesn't dissapte enough heat apparently, because after continuously copying large files for about 5 minutes or so, the drive gets warm to the point where it starts to throttle to a sustained speed of merely 20MB/s to prevent overheating. If you unplug the flash drive and quickly cool it off by gripping it in your hand or throwing it in the fridge, the speed will immediately jump back to the original 120MB/s sustained write. In a nutshell, unless you can somehow externally and actively cool this flash drive, it WILL throttle after a few minutes of intensive use.
Both the not-as-advertised IO speed as well as the thermal throttling has been widly noted on a lot of other sites that sells this flash drive. Do not get this drive if you're planning to use it for IO intensive purposes. If you only wish to use the drive casually (such as for archiving or carrying documents and movies around), and you don't mind the inconsistent performance caused by heat after long periods of high IO, then I'd say go for it. Otherwise, there are better drives for the money that can perform much better and consistently.
I tend to be cynical. I am somewhat expecting this to fail. Enough that I will definitely be backing up whatever I put on here. The aluminum casing definitely acts as a heat sink; I wish they'd made the chevron grooves deeper, even if it made the casing thicker, as I think the increased surface area would dissipate heat better.
Still, it's awesome for now, even at the hotter/slower speed. And 240GB? C'mon you can't beat that.