Dynex USB 3.0 external

I just bought at Best Buy, yea I know. Dynex external HDD enclosure. But I did get it in hand and $31 while not cheap is in my budget. DX-HD302513. I was away from PC's for two years. I found an old SeaGate 500GB @7200 Momentus. The drive was partitioned in two equal. D: faster 106MB/s/103MB/s read/write, E: 88MB/s both read and write. That is faster than what I think I remember external being in the past.

I like this but if anyone has comment if performance is good/bad or any other info I would like to hear. I can't even remember how I partitioned this thing. I might even undo, not sure.

 

USB3.0 has more bandwidth, thus the drive isn't bottlenecked. Same goes for eSATA and thunderbolt. The rest is dependent on the drive, in case you hadn't noticed, a lot of pre-built externals house slow 5.4K RPM drives.

 

Thanks for that tidbit. Is the HDD doing fine? Any comment, I really do not know what I should expect. I never thought USB 3.0 was the issue. If anyone knows if the Dynex is SATA I/II i would like to know. I really just really wanted to know what you guys thought. I am not trying to get performance tips unless someone sees an issue.

Also if someone has comment on the box I bought I can still return.

Over 80 views almost no responses, any comment would be good.

 

Your sequential speeds are as fast as the drive will get so there is nothing wrong with the enclosure. Besides, it doesn't really matter if it's SATA II or III, no way that HDD will saturate any SATA interface.

 

Thanks I forgot that. Not that I am going to go out and buy but are there any 2.5 @7200 that might because of density exceed 150MB/s which I think is the SATA 1/1.5?

I do understand what you mean about how it doesn't matter because my drive can't exceed the SATA. But I am thinking if it was SATA II or SATA III it would be all over the packaging.

You mentioned the USB 3.0 bandwidth. I know there is overhead so I think having the USB 3.0 is a good thing to max out my HDD performance. But that leads me to ask a question if you happen to know. If someone has a SATA III and USB 3.0 with a SSD would there be a bottleneck? I am not going to go out and buy today but would be nice to know for the future. I love my SSD. This 500GB external is very nice for my music and media files since 256GB's fills up fast.

 

No one makes a fuss about SATA II, SATA I is a dinosaur at this point so you can be pretty much certain that it is SATA II. In other words, SATA II is the standard now with SATA III being readily available in computers. USB3.0 won't saturate SATA II in my experience anyways.

Left: SSD on USB3.0, Right: same SSD on Internal SATA II

 

Thanks for all your input. I feel like I know a little more. Do I read correct you do not think the greater sequential read/write (on your thumbnails) is a USB 3.0 bottleneck? This is my first and only USB 3.0 device. I am certain I will pick up more knowledge as I go.

But once again thanks for your time and info. I do feel good about what you said I likely have SATA II. In the long run I guess not much matters because I have what I have but do like to know the info.

 

Well, from those results, I'd say that USB3.0 to SATA probably tops at ~200MB/s compared to a SSD connected directly to SATA. That is more than what a HDD can do, same for 4K random reads/writes, a HDD can't go as fast. In short, a SSD will be bottlenecked by USB3.0, but a HDD won't. There are multiple factors contributing to that and I'd have to try it again with the Intel USB ports instead of the Renesas on my desktop.

500GB 7200RPM HDD on SATA. That drive isn't the fastest 7200 RPM kid on the block, it is a bit old and even when it was new, it wasn't the top dog, but it'll give you an idea of what a HDD is capable of. As you can see, USB3.0 is capable of faster transfers than that.

 

hey there. I also bought this enclosure to drop my original notebook 500gb hdd in. I've been experiencing issues with windows 8.1, where the drive won't be recognized when I reboot. It is an unidentified USB device in the device manager; if I uninstall/plug back in, it will detect and work fine.. just seems to go unrecognized on reboots..

have you had any issues in this regard? (also replaced the original cable as it was giving me connectivity issues)

thanks