Dell XPS 15

High-end relatively light-weight (2kg) notebook with 4K 15.6″ touchscreen. Dell XPS 15 9550. Device performance is good. Good Wi-Fi speed (important since Ethernet port is absent). Good CPU, SDD, Video performance.


There is a lot of good points about the device:

  • high performance
  • high resolution
  • tiny display borders
  • bright display colors
  • keyboard backlight
  • chasis materials
  • ~4h batery life (84Wh)

And some points that is not that good

  • glance display reflect light
  • touch screen cause fingerprints on display
  • tiny borders on touchscreen cause touches when change display angle
  • low HiDPI suport in Windows environment
  • lack of Ethernet port
  • Unavailability of dock accessories on Ukrainian market
  • Windows 10 HOME (that is not support virtualisation and bitlocker)
  • Long boot (15 seconds of BIOS POST)

Also there are McAfee Antivirus and additional DropBox space as a bonux for 1 year.

HiDPI compatibility

Windows, Windows applications, Java applications, sites, etc need may or may not be HiDPI aware. The issue with browsers is just about images that may (and one day will) be better for high resolution clients. The issue with OS and application are more painful. A lot of application just not usefull anymore on 15″ 4K display. OS trying too zoom Windows application to work with high DPI. For some it works, for some not.

FastStone Image Viewer on UHD display
FastStone Image Viewer 5.5 on 4K display

Java Application
Java applications are just tiny windows that is hard to work with.

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Top Speed UHS-I U3 microSD 32 GB

Best microSD cards, that may be found today at stores is UHS-I with sequental read/write speed about 80-90 MB/s. To achive this read/write speed cardreaders must support at least UHS-I standard and be connected using fast interface like USB 3.0 or better. Use of old readers will reduce speed to about 20 MB/s. Use of USB 2.0 with UHS-I reader gives about 40 MB/s

microSDHC_SanDisk_32GB microSDHC_Transcend_32GB microSDHC_Kingston_32GB
Price 24.04.2016 37.29$ 22.64$ 18.03$
Sequential (QD=Q32) (MB/s) R 96.20 MB/s
W: 88.60 MB/s
R: 94.02 MB/s
W: 85.66 MB/s
R: 92.27 MB/s
W: 81.81 MB/s
Random  4KB (QD=32) (MB/s) R 8.63 MB/s
W: 3.22 MB/s
R:  10.19 MB/s
W: 1.69 MB/s
R:  11.76 MB/s
W: 1.47 MB/s
Sequental (MB/s) R: 97.31 MB/s
W: 88.49 MB/s
R:  94.81 MB/s
W: 87.46 MB/s
R:  91.23 MB/s
W: 86.20 MB/s
Random 4KB (MB/s) R: 8.63 MB/s
W: 3.27 MB/s
R:  9.98 MB/s
W: 1.45 MB/s
R:  10.37 MB/s
W: 1.44 MB/s


SDSDQXP-032G-G46A Sandisk Extreme PRO MicroSDHC (633x) UHS-I U3

TS32GUSDU3 Transcend ULTIMATE microSDHC 32GB (633x) UHS-I U3

SDCA3/32GB Kingston MicroSDHC 32GB UHS-I U3


Transcend TS-RDF9


CrystalDiskMark 5.1.2 x64

Additional reading for topic:


USB 3.0 SD Cardreaders

Quick comparision of couple USB 3.0 cardreaders with UHS-I support.


Transcend 300x SDHC UHS-1 U1

Read speed
Sequential Read (QD=Q32) (MB/s) 92.26 88.71 93.56 94.11
Random Read 4KB (QD=32) (MB/s) 6.58 9.39 10.52 10.50
Sequental Read (MB/s) 93.54 93.54 94.17 94.37
Random Read 4KB (MB/s) 6.38 8.92 10.11 10.04
Write Speed
Sequential Write (QD=Q32) (MB/s) 35.05 38.22 37.89 38.25
Random Write 4KB (QD=32) (MB/s) 0.98 1.00 0.78 1.03
Sequental Write (MB/s) 34.81 37.95 37.54 37.33
Random Write 4KB (MB/s) 0.82 0.68 0.88 0.66

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Nous NF9

Nous NF9.

Nous NF9

Yet another Ambarella A7la50 with Omnivision OV4689 and GPS. Device record in .MOV (H.263/AAC) files that contains GPS track inside.
There is a lot of good things about the device:

  • It record SHD.
  • Have large LCD with relatively good view angles.
  • Good holder with build-in connector that make it easy to install and remove device using one hand.
  • GPS on suction cap.
  • Support SDXC cards.
  • Able to record time-lapse.
  • Internal memory available (can store 1 min of S.Fine SHD video file).
  • Video stamp allow customizations

And some not that good

  • CarDV player not good
  • IR LEDs gives no light to image
  • Poor Sound record quality
  • 130 mAh battery
  • Not compatible with iPad (SD card reader import)
  • UI not perfect (both menu structure and functions assigned to keys)

CarDV Player 2.2

Standart player for NOUS NF9 (SAMOON B03F) is kind of minimalistic one. Firmware contain some older version with internal numbers 5.5.0. CD shiped with DVR contain newer v2.2 with internal numbers 5.7.1. Both are looks more or less same.

CarDV Player

And contain same bugs with google maps integrations. That makes work with this application painful.


Did search but unable to find site of software authors.

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Registrator Viewer 6.0

Registrator Viewer (DATAKAM Player) is the best player for dashcam video files. It known to be used in some DVR firmwares. Usually When format SD card using DVR menu RegistratorViewerX.X.exe apear in SD root folder. In case firmware not contain the player it still may be downloaded and used for most devices.

Registrator Viewer 6

Currently URL reported by some browsers as insecure, but check with VirusTotal says it is ok. Other URL to DATAKAM Player Download page is

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