Hi, I have a question and I guess a bit of a problem with transfer rates/speeds with some of my external storage devices.
The question is in regards to the Transcend ESD400 portable SSD drive with the capacity of 128GB. I bought this drive about a year and a half ago as it was the cheapest external SSD available and it has since served me well. I plug it into my PC via USB 3.0 port and when copying data to it (usually media files ranging from 2-3GB up to 70GB) i get transfer speeds of around 140-160 MB/s. I don't know if that's good or if it should be more but it starts at that rate and stays at it all the way through.
A few months ago I decided to get another external storage device and this time I decided to try the USB enclosure route- I bought a Patriot Burst 240GB Sata3 SSD and with it I got the Icy Box IB-223U3a-B enclosure (https://www.raidsonic.de/en/standards/searchresults.php?we_objectID=3032). Again, no real idea if it's any good but it seemed affordable and it has UASP support which I read was important. I got another one to use with Kingston UV400 120GB drive that I had around.
Anyway, transfering the same types of files to the new external drives resulted in faster transfer speeds at the start (with Patriot Burst drive) but it would eventually drop off significantly (from 180-200 MB/s to 50-60 Mb/s) resulting in lower average transfer speed and taking more time than with the Transcend.
I did some testing with Crystaldiskmark and the Patriot Burst in enclosure scores much better results there than the Transcend. My question is why does one have that drop in transfer speed and the other one does not? And is there any way to "avoid" that drop (maybe a better enclosure) or is it just the way it is? Is there any way to know when looking at the external SSD drives whether it will have a constant transfer speed?
Hopefully someone will be able to help with some information (and excuse my lack of knowledge on the topic). Thanks!
The question is in regards to the Transcend ESD400 portable SSD drive with the capacity of 128GB. I bought this drive about a year and a half ago as it was the cheapest external SSD available and it has since served me well. I plug it into my PC via USB 3.0 port and when copying data to it (usually media files ranging from 2-3GB up to 70GB) i get transfer speeds of around 140-160 MB/s. I don't know if that's good or if it should be more but it starts at that rate and stays at it all the way through.
A few months ago I decided to get another external storage device and this time I decided to try the USB enclosure route- I bought a Patriot Burst 240GB Sata3 SSD and with it I got the Icy Box IB-223U3a-B enclosure (https://www.raidsonic.de/en/standards/searchresults.php?we_objectID=3032). Again, no real idea if it's any good but it seemed affordable and it has UASP support which I read was important. I got another one to use with Kingston UV400 120GB drive that I had around.
Anyway, transfering the same types of files to the new external drives resulted in faster transfer speeds at the start (with Patriot Burst drive) but it would eventually drop off significantly (from 180-200 MB/s to 50-60 Mb/s) resulting in lower average transfer speed and taking more time than with the Transcend.
I did some testing with Crystaldiskmark and the Patriot Burst in enclosure scores much better results there than the Transcend. My question is why does one have that drop in transfer speed and the other one does not? And is there any way to "avoid" that drop (maybe a better enclosure) or is it just the way it is? Is there any way to know when looking at the external SSD drives whether it will have a constant transfer speed?
Hopefully someone will be able to help with some information (and excuse my lack of knowledge on the topic). Thanks!