I have transfer rates much slower than I would expect: 70 MB/s read 36 MB/s write. I believe I have all drivers up to date and latest firmware. Help
1561869
Are you using the power cable that came with the card? In any case, I am not happy with this card. The USB connectors are very loose and the card died after 8 weeks. Tossed it in the garbage. I replaced it with a Gmyle card which had the same loose connectors. I ended up buying a Best Connection eSata expresscard which has worked flawlessly, with higher speeds than I was getting with the USB cards.
1561870
Don't forget that MB (mega BYTES) is different than Mb (mega BITS).... it takes 8 bits to make a byte, so as a rule of thumb, the advertised speed is typically expressed with the LARGEST number possible Hence speeds quoted as MegaBITS will be 8 times larger than the same reading expressed as a MegaBYTE. 70 MegaBYTES per second is 560 MegaBITS per second, more or less, ignoring some overhead in the transfer process.
1561871
Sorry, the laptop I was using the card with died, shortly after I got the card. (Unrelated problem.) That was the only machine I have that would take the card. Bad timing for me. However, I had no problems with the card while the laptop was working.
1561872
Try the card in a few other computers, or different brands to figure out if the problem lies in the card itself. BTW, theoretical top speeds are never achieved in practice. See Wikipedia article: http://en.wikipedia.org/wiki/List_of_device_bit_rates#mediaviewer/File:Speeds_of_common_interfaces.svg
1561873
It seems to work faster than the standard USB 2.0 on my laptop. If I used a USB 2.0 flash drive or external drive on this adapter and additional plug in the provides USB power supply cable it will be twice as fast as a standard USB 2.0. The real advantage is using a USB 3.0 flash drive with this adapter, again using the additional power supply cable. Transfer speeds are based on the optimal speed supported by your external device.
1682873
you may want to check and make sure your computer has usb3 support? mine doesn't have usb3 so esata can transfer faster.
36841
My similar drive (5TB) is also equipped for USB 3, but it works great on my 2.0 ports. I assume it could transfer faster on 3.0, but there's no incompatibility.
1233833
I got about 300 MB/s, which is about half of the max speed but it was plenty fast. If you are connecting the USB 3 wire to an external USB 3 hard disk, and not doing hard disk intensive work on your main OS drive, I think you will get about the same rate of transfer speed while moving large files. Good luck!
1925327
the data transfer rate is pretty slow... a 1.5gb file takes several minutes to transfer... 44gb would take about 30-45 minutes.
384452
I believe the wrote speed is up to 90MB/s* and writes up to 60MB/s. Hope this helps.
1762477
I have been running mine with a Western Digital WD30EFRX NAS 3tb just fine for a few months now. Runs quick and hasn't presented any strange playback issues or lag, it has actually decreased load times but probably due to NAS spec. Though, weird behavior with file transfer, when I copied over the old 1tb drive in my Micca to the new 3tb, it somehow ballooned my files by about 200gb. Hidden files show nothing and quite a few folders read different in size between the two drives. Not sure if files are being decompressed on the copy over or something, no ZIPs just ghost data that has taken decent bite out of the drive, I don't think there is a 200gb reserve or system partition on a 3tb...
1512216
Go by the MB/s not the name of a card. This would, if you study, be exceeding most cards on the market. I have up to 80MB/s. Price will stop you from going much higher.
782787
Something is not right there. On a wired 1Gbps connection with a single copy I would expect at least 400Mbps, with speeds over 700Mbps on faster switches (efficient internal packet forwarding). That is from testing when I first received the unit (tested with 4 x 5200 RPM Toshiba 160GB in RAID 5, prior to 4 x 7200 RPM Seagate 750GB in SHR I have had in it since then - but I haven't tried that on a fast switch, my home switch seems to max about 500Mbps).For comparison, I've seen speeds close to single line speed (~900Mbps) on a DS713+/DX513 combo.If you are on WiFi, I would run hardwired tests for comparison. Then start troubleshooting your WiFi. Something is not right there. On a wired 1Gbps connection with a single copy I would expect at least 400Mbps, with speeds over 700Mbps on faster switches (efficient internal packet forwarding). That is from testing when I first received the unit (tested with 4 x 5200 RPM Toshiba 160GB in RAID 5, prior to 4 x 7200 RPM Seagate 750GB in SHR I have had in it since then - but I haven't tried that on a fast switch, my home switch seems to max about 500Mbps).For comparison, I've seen speeds close to single line speed (~900Mbps) on a DS713+/DX513 combo.If you are on WiFi, I... » Read More Something is not right there. On a wired 1Gbps connection with a single copy I would expect at least 400Mbps, with speeds over 700Mbps on faster switches (efficient internal packet forwarding). That is from testing when I first received the unit (tested with 4 x 5200 RPM Toshiba 160GB in RAID 5, prior to 4 x 7200 RPM Seagate 750GB in SHR I have had in it since then - but I haven't tried that on a fast switch, my home switch seems to max about 500Mbps).For comparison, I've seen speeds close to single line speed (~900Mbps) on a DS713+/DX513 combo.If you are on WiFi, I would run hardwired tests for comparison. Then start troubleshooting your WiFi. « Show Less
678141
No. The motherboard header you are plugging into is USB 2.0 then that will cap you transfer speed.
257044
Check the transfer rates of the two cards that is likely the difference. You can also go to the Sandisk web site and compare the two cards.
294451
No and they are so slow its almost not worth the buy. 4gb transfer to each drive took 45mins :(
349084
Using Disk Speed Test my results are as follows: 109 Write and 106 Read on a Mac partitioned to HSF+. Hope this helps.
1169290
I initially used the card as formatted (ExFat) but found that the data transfer speed was slower than advertised. I reformatted Mac OS Extended and found it to be much quicker.
1190421
It's slower being it's usb 2.0. I don't know what the benchmark numbers for usb 3.0 but I would assume it's quite a bit faster. I had need of the older legacy 2.0 and the price was right for me.
893137
Hey Gov, based on my testing of the card, read and write speeds of 44.4MB/s and 19.1MB/s respectively. Hope that helps.
1374222
It claims 3.0 but the read speed is determined by the card you put in it more than the 3.0 USB. I get similar speeds on either bus.