what is the write speed? the given 70mb/s is only the read speed
1769383
I have no idea. since I acquired this flash card to use in my Samsung Galaxy S4. Instead of asking at Amazon, why didn't you check on the Samsung web site, or use Google to search for R/W speeds? I did the latter, and was directed to the answer at http://www.samsung.com/uk/consumer/memory-cards-hdd-odd/memory-cards-accessories/micro-sdhc-pro/MB-MGCGB/EU-spec.
1769384
About 20 MB/s. Typically this question is asked if someone is looking at a card for a GoPro. GoPro recently (I noticed it missing on March 6, 2014) dropped this card from their list of recommended micro sd cards for the GoPro Hero 3+ black edition. I haven't used pro tune but so far this card has worked for me. Just keep in mind if you use pro tune or the larger resolutions (2.7k, 4k, etc) on your GoPro this card may not keep up. The GoPro Hero 3+ Black Edition can try to write at speeds up to 45 MB/s, if your card can't keep up it will crash.
2274761
110.36 MB/sec Reading, 84.31 MB/sec Writing, from Synology's website. I have not tested these specs but I have been very impressed with the speed of this unit. I uploaded approx. 80 Gig of photos once I set the NAS up and is was able to generate the thumbnail views relatively fast, the unit also gives you the ability to pause cpu intensive actions so that you can do what you need to do then resume the intense process later. Very nice feature.
1555558
I wrote a non-techie review of my 64g and 128g. I compared writing 37.3 gig of data - the San Disk disk took 5:55 minutes for the 64g and 5:50 for the 128g. The other 2 (not cheapies) took between 25 and 36 minites. All were done with the same source data on the same computer using the same USB3 port. They were all USB 3 drives. Not sure what the specs are, SanDisk has them on their website, but I can tell you it is faster than any of the others out there except maybe the Lexar and the price on those is much higher.
1952349
Sandisk says "write speed up to 90 MB/s"I did some tests with my USB 3 Card Reader (sandisk brand) Wrote a 4gb file to it and averaged 75mb/s and even faster on smaller files.. PC: i7 2600k @ 4.2 Win 7 64bit
1064247
Hi J. Chen. The 300/500 MB/s refers to the write speed for the different capacities. The write speed is different for the 128GB, 256GB, and 500GB drives. The 512GB drive has the 500MB/s write speed.
685100
The formatted capacity should be showing 29.6GB with exFAT. But I was able to measure 47MB/s read and 13MB/s write, in a USB 3.0 memory card reader. It is possible that your card reader is not UHS-1 capable.
475288
Do a wikipedia search on it. It is the communication speed in bits and not bytes.
211694
Read is up to 500MB/s and write up to 400MB/s. Bootable as an OS disk or use it as storage drive. Can be use with PCI-e adapter card.
2251757
I believe it is read only. M-Disc writers are more expensive I think. The M-Disk website has a list of supported drives and the Bt-20N is not listed. Also, if you look on LG's website at some of the drives which are supposedly "M-Disk Ready", they list write and read speeds for the M-Disc format. The LG webpage for the BT-20N does not list any write or read speeds for the M-Disc. But I could be wrong. However I wouldn't want to gamble on it. Maybe try one of these drives on the list: http://www.mdisc.com/m-ready/
384452
I believe the wrote speed is up to 90MB/s* and writes up to 60MB/s. Hope this helps.
469158
Appreciate the feedback. What does 30mb per second read mean? Is that from the disk to camera? Or camera to PC? And if I do go lower what will i lose out on? i.e. what potential wil lbe untapped? Sorry...newbie here and appreciate your help.
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.
1960039
This particular drive is USB2. You'll get about 16 megabytes per second write, 20 to 30 read, depending on file size, fragmentation, etc.
2273961
The PNY Turbo Plus Attache USB 3.0 Flash Drive (32GB model) reads as fast as 140MBps* and writes up to 70MBps* . (From Google search)
1202858
My benchmark using CrystalDiskMark shows its sequential write speed is 12MB/s. That means it meets class-10 requirement.
313951
I get ~30-40 MB/s via iSCSI (NAS' CPU is maxed...) with all other services disabled, can't comment on SMB performance since I dont use it. These are definitely not the fastest units. (for anyone else reading this, that is megaBYTES per second, not megaBITS)
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.