I just found out that my Dell XPS 15z (shipped out 10 Jul 2011) drivers’ and bios are totally out of date.
– Most of them dated as far as March 2011.
– Default BIOS reports wrong battery capacity and discharge/charge value.
– Some weird upper border bugs which prohibit maximize windows to occupy the whole screen estate (waste around 2mm of space) except when full screen mode.
For those who already purchase XPS 15z but haven’t perform any driver update and bios update, do your laptop a big favor by visiting Dell Driver Page.
Changes that I noticed:
@ It is confirmed that Dell XPS15z uses 8 cells battery with 65WHr capacity. 8 hours + is easily achieved for work/study/office related activities. Wifi On and Off, depend on demand. Brightness, 3 step above the lowest setting.
@ Latest HD3000 driver update fix empty upper border bugs (for maximize windows).
@ Missing Intel Rapid Storage aps now available.
@ Fast Access (Face detection) works much better. For login (able to detect my face less than 1 second) and energy saving purposes. Now, when ever I left my laptop, it will automatically turn of the monitor (not sleep). Doesn’t matter if I set to turn off the monitor after 10 minutes or 1 hour.
@ Dual finger scroll and zooming become more responsive.
I do not perform and quantitative benchmark thus I am not able to comment on performance department. WEI indicate same score though.