Transcend JetFlash 790 128Gb

Advantages: Subjectively fast, easy to use, a retractable contact instead of a cap is subjectively better, the mechanism has not dangled in more than a year of active use.

Disadvantages: After 1.5 years of working with large files and frequent rewriting cycles, it stopped working (was not recognized), with the loss of all data (degradation of memory chips is a verdict of the repairmen).

Comment: Yuzal model for 128 Gb. In general, all this time I was satisfied. Convenient, reliable (as it seemed to me), did not fail. The write speed through the USB 3.0 ports was good. Large files were written and read quickly. The reason for the breakdown, apparently, is the too frequent rewriting of a large file (5 GB in the form of an encrypted container, which was hooked up as a separate disk, and with every minute use it was completely overwritten about 100-200 times a day in total and came out under 40-50 thousand .rewrite cycles). The next flash drive I will buy is the same, only I will use it smarter.

Transcend JetFlash 790 128Gb ---------------------------------------------- ------------------------- CrystalDiskMark 4.0.3 x64 OS: Windows 7 SP1 (x64) ------------ -------------------------------------------------- --------- Test: 50 MiB Sequential Read (Q = 32, T = 1): 94.562 MB / s Sequential Write (Q = 32, T = 1): 67.927 MB / s Random Read 4KiB (Q = 32, T = 1): 11.502 MB / s [2808.1 IOPS] Random Write 4KiB (Q = 32, T = 1): 1.521 MB / s [371.3 IOPS] Sequential Read (T = 1): 89.971 MB / s Sequential Write (T = 1): 67.528 MB / s Random Read 4KiB (Q = 1, T = 1): 9.070 MB / s [2214.4 IOPS] Random Write 4KiB (Q = 1, T = 1): 1.413 MB / s [ 345.0 IOPS] ----------------------------------------------- ------------------------ Test: 1024 MiB Sequential Read (Q = 32, T = 1): 94.737 MB / s Sequential Write (Q = 32 , T = 1): 68.338 MB / s Random Read 4KiB (Q = 32, T = 1): 8.888 MB / s [2169.9 IOPS] Random Write 4KiB (Q = 32, T = 1): 1.415 MB / s [345.5 IOPS] Sequential Read (T = 1): 91.029 MB / s Sequential Write (T = 1): 67.532 MB / s Ran dom Read 4KiB (Q = 1, T = 1): 7.266 MB / s [1773.9 IOPS] Random Write 4KiB (Q = 1, T = 1): 1.315 MB / s [321.0 IOPS] -------- -------------------------------------------------- ------------- Test: 8192 MiB Sequential Read (Q = 32, T = 1): 94.408 MB / s Sequential Write (Q = 32, T = 1): 67.977 MB / s Random Read 4KiB (Q = 32, T = 1): 7.623 MB / s [1861.1 IOPS] Random Write 4KiB (Q = 32, T = 1): 0.652 MB / s [159.2 IOPS] Sequential Read (T = 1): 76.764 MB / s Sequential Write (T = 1): 38.376 MB / s Random Read 4KiB (Q = 1, T = 1): 5.342 MB / s [1304.2 IOPS] Random Write 4KiB (Q = 1, T = 1): 1.110 MB / s [271.0 IOPS] ------------------------------------------- ---------------------------- Controller: Silicon Motion SM3267 ABS Possible Memory Chip (s): Samsung K9CHGD8S1M * 2 Memory Type: TLC Flash ID: EC3CE9DE 88C5 Flash CE: 4 Flash Channels: Single Chip F / W: ISP 140909-1AB MP: N1125V1 MPTOOL Ver .: 1.01.65 VID: 8564 PID: 1000 Manufacturer: JetFlash Product: Mass Storage Device Query Vendor ID: JetFlash Query Product ID: Tr anscend 128GB Query Product Revision: 1100 Physical Disk Capacity: 126399545344 Bytes Windows Disk Capacity: 126399524864 Bytes Internal Tags: 8V2R-T99J File System: NTFS Relative Offset: 16 KB USB Version: 3.00 Declared Power: 304 mA ContMeas ID: EA51-01- FF Microsoft Windows 7 SP1 x64

Advantages: - Cost / volume - No cap - Speed

Disadvantages: I have not revealed any explicit ones yet, except that the LED will strain when used as a carrier for video playback in the side port of the TV.

Comment: Up to this point, Transcend products have always met the declared characteristics, and the SD card of this manufacturer 600X with a speed of 90/45 read / write - 1.5 times surpassed its "tabular" indicators. Transcend JetFlash 790 at 128Gb was no exception: Sequential Read (Q = 32, T = 1): 123.906 MB / s Sequential Write (Q = 32, T = 1): 89.722 MB / s Random Read 4KiB (Q = 32, T = 1): 4.107 MB / s [1002.7 IOPS] Random Write 4KiB (Q = 32, T = 1): 1.341 MB / s [327.4 IOPS] Sequential Read (T = 1): 124.155 MB / s Sequential Write (T = 1): 94.998 MB / s Random Read 4KiB (Q = 1, T = 1): 3.685 MB / s [899.7 IOPS] Random Write 4KiB (Q = 1, T = 1): 0.943 MB / s [230.2 IOPS] Date: 2016/07/27 22:28:09 OS: Windows 10 Professional [10.0 Build 10586] (x64) The file system of the sample under test is FAT32 out of the box. Up to 125/95 Read / Write - Bravo Transcend! About reliability - time will tell.

Advantages: High speed of work. Body layout without cap. No rubber inserts. Not bright flash drive status LED with diffused light.

Comment: Read / write speed of 2.4 GB file with USB 2.0 interconnect: Read: 31 MB / s; Write: 27 MB / s. Read / write speed of 4.7 GB file with USB 3.0 interconnect: Read: 61 MB / s; Write: 29 MB / s. Memory chip: 2xSamsung K9BFGY8S1M Type TLC in dual channel mode. Controller: Silicon Motion SM3267 ABS. Declared power: 300 mW.

Advantages: until they died) the write speed, as written on the package, sometimes sags, but not critical (throwing films of 10-30 GB, the write speed for usb 3.0 after 5 minutes, on average 37 mb / s, suits me)

Disadvantages: the exit mechanism-sadness is complete, for a year of use on 2 flash drives (64 and 128GB it erased the campaign))) I push the flash drive, I try to insert it into the connector on the telly or laptop, but it spontaneously goes back, I have to press hard on the latch to insert a flash drive into the connector, sometimes you have to poke around several times, which really pisses off!

Comment: I bought more than a year ago 3 pieces for: 32.64 and 128 GB, the first is with a backup copy of Windows, so I can't say about the reliability) the rest I use every day, they work without complaints.

Advantages: Price, speed

Disadvantages: Retractable mechanism

Comment: Sequential Read (Q = 32, T = 1): 118.154 MB / s Sequential Write (Q = 32, T = 1): 68.854 MB / s Random Read 4KiB (Q = 32, T = 1): 6.505 MB / s [ 1588.1 IOPS] Random Write 4KiB (Q = 32, T = 1): 0.044 MB / s [10.7 IOPS] Sequential Read (T = 1): 120.173 MB / s Sequential Write (T = 1): 18.246 MB / s Random Read 4KiB (Q = 1, T = 1): 6.073 MB / s [1482.7 IOPS] Random Write 4KiB (Q = 1, T = 1): 0.094 MB / s [22.9 IOPS]

Advantages: The declared speed on the package is 90 read 25 write, in fact the speed is even higher than the declared one. the price is adequate 887 rubles (took in e2e4)

Disadvantages: they are not

Comment: -------------------------------------------------- --------------------- CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo Crystal Dew World: http://crystalmark.info/ ----- -------------------------------------------------- ---------------- * MB / s = 1,000,000 byte / s [SATA / 300 = 300,000,000 byte / s] Sequential Read: 100.160 MB / s Sequential Write: 40.774 MB / s Random Read 512KB: 88.334 MB / s Random Write 512KB: 10.418 MB / s Random Read 4KB (QD = 1): 4.457 MB / s [1088.3 IOPS] Random Write 4KB (QD = 1): 0.227 MB / s [55.5 IOPS] Random Read 4KB (QD = 32): 5.209 MB / s [1271.7 IOPS] Random Write 4KB (QD = 32): 0.496 MB / s [121.2 IOPS] Test: 1000 MB [E: 0.0% (0.0 / 29.4 GB)] ( x1) Date: 2015/06/18 13:47:17 OS: Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

Advantages: Stability

Disadvantages: For me not

Comment: Works with a bang! Reads, writes, it is determined what is in the tablet, what is in the computer, only this way, it is not heated! I'm happy! I bought white for 2650.

Advantages: Design Speed ​​Without cap

Disadvantages: Is that the size of the case

Comment: All speed indicators are correct for the version with 64 GB onboard, keep in mind that flash drives of the same series, but with less memory, may work slower, this is traditional for manufacturers, because their filling is slightly different. Sequential Read (Q = 32, T = 1): 107.607 MB / s Sequential Write (Q = 32, T = 1): 50.938 MB / s Random Read 4KiB (Q = 32, T = 1): 6.457 MB / s [ 1576.4 IOPS] Random Write 4KiB (Q = 32, T = 1): 1.631 MB / s [398.2 IOPS] Sequential Read (T = 1): 103.391 MB / s Sequential Write (T = 1): 66.696 MB / s Random Read 4KiB (Q = 1, T = 1): 5.589 MB / s [1364.5 IOPS] Random Write 4KiB (Q = 1, T = 1): 1.474 MB / s [359.9 IOPS] Test: 1024 MiB [H: 20.3% ( 11.9 / 58.8 GiB)] (x3) [Interval = 10 sec] The card fits comfortably in the hand, the design is excellent. The retractable mechanism works flawlessly, the latch is quite rigid. For me, the lack of a cap is a plus, there is nothing to lose :) It is quite wide, if the USB connectors are located close to each other it will not be very convenient to use. The speed fully corresponds to the one declared by the manufacturer, and even more, on large files. I attach the tests (NTFS). Of course, if you use USB 3.0 ports. If there are no such ports, then the purchase does not make sense, the speed will be limited by hardware. Lifetime guarantee, whatever it really means. The manufacturer has a certain reputation and he maintains it with the quality of the products. The price is not a freebie, but completely adequate. The LED indication of the operation of the flash drive is available, there is little use from it, except that it informs that the flash drive is busy with a very important matter;)

Advantages: 1. Opera. the system was Win XP SP3 32 Bit, the flash drive was formatted in NTFS, the volume became 58.8 Gb, with the purchase of course it was FAT32. I am writing about the Jetflash 790 64GB USB 3.1 - the flash drive is smart: the folder with the DVD movie 3.70 Gb was copied to it in 3 minutes. 50 seconds, and an MKV file weighing 7.95 Gb in 7 minutes. 25 s. and it's all on USB 2.0 - I think it's an excellent result. I connected the flash drive to my computer via a USB 3.0 extension cable 1.5 m long, too lazy to bend under the table, and so the connection always lies on the table at hand. 2. Although it is written in the specifications on the USB 3.0 store website, they actually brought USB 3.1. On the mat. the board has not tested 3.1 yet, although it is. 3.Lifetime warranty, in the invoice, in the column warranty (months) costs 999. Unfortunately, it cannot be verified.

Disadvantages: If only the price, I took it for 1390 rubles.

Comment: While copying the test files described in the merits, the flash drive practically did not heat up.