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21 of 22 people found the following review helpful: By Marty Bond (Maryland, USA) - See all my reviews This review is from: Sony Micro Vault Classic 4 GB USB Flash Drive (USM4GJ) (Personal Computers) I have been using the SONY 2 GB microvault classic with excellent results. Since I was very pleased with the 2GB microvault - I decided to upgrade to the 4GB model. I gave the 4GB Microvault a one star rating for one reason. Transferring files to and from the unit as well as deleting files off it takes incredibly more time using the 4GB model than with the 2 GB model. I ran many tests between the two units and here are some results: Transferring one folder of files to the: 4GB - 21 minutes 2GB - 1.75 minutes Deleting these same files off the: 4 GB - 11 minutes 2 GB - 25 seconds These results were typical with all the testing I did. All testing was done using the same computer with all procedures being equal. I was able to return the 4GB Microvault - with a renewed appreciation for the 2 GB model. Sometimes....bigger is not necessarily better. 13 of 14 people found the following review helpful: By This review is from: Sony Micro Vault Classic 4 GB USB Flash Drive (USM4GJ) (Personal Computers) This version is terribly slow. I have had the 1GB and 2GB versions because I love the form factor -- no more lost caps! I use them with four different computers (three different manufacturers). They perform the same with all of them. In this case, the 4GB version is a true dog. For a small number of large files, it is about 2x slower than earlier models. For a large number of small files, it is about 10x slower, sometimes worse. Totally unacceptable. That might not seem bad, but when you realize that a standard 3 minute transfer now takes over 30 minutes, spit-cough-phooey! The only reason I am even keeping it is because I need the extra space. Not happy with this one. 7 of 9 people found the following review helpful: By Amazon Verified Purchase(What's this?) This review is from: Sony Micro Vault Classic 4 GB USB Flash Drive (USM4GJ) (Personal Computers) I purchased the Sony because I need dependable media - I have had problems with off brands. This drive seems to save and hold data correctly, however it is extremely slow in transfering data. I have a Micro Vault 512 Mb that works great (with either USB 1 or USB 2). For some reason this 4GB drive can take 1/2 hr to transfer about 100 Mb of data - it should have only taken a few minutes. I have tried this new drive on 3 different computers and on both USB 1 and USB 2 but it doesn't seem to make a difference. |