On Jun 21, 2011, at 9:43 PM, Andrew Webber wrote:
I have a 24" Dell display that offers a choice of VGA or DVI-D (or
S-Video, composite, or component). With my current X300 I've just used
VGA and it's worked okay at 1920x1200, though sometimes when I come
out of standby the image is bad, I switch to another resolution then
back to 1920x1200 and it's usually fine.
My (coming) X220 offers a choice of VGA or DP. Is it worth getting a
DP-to-DVI adapter and using a DVI cable, given the VGA does work? Will
I get a better image or faster response?
I would expect a better image (and less chance of problems) using DP/
DVI.
If you use VGA there is a digital to analog conversion, analog signal in
the VGA cable, and a conversion from analog back to digital in the
display.
Typically there are losses in image quality with each conversion and the
analog signal is more easily degraded by noise than the digital signal.
Of course, the image quality also depends on the signal processing
electronics in the monitor itself ...
Stuart
(I use a DP-dual-link dvi adapter with a 30" monitor with a MacBook Pro.
That provides a very nice image at 2560x1600.)
I'm thinking of the Monoprice #4827 DP-to-DVI-D adapter at $8.16, and
since I'm thinking of getting a couple of 15' USB cables, I can add
the adapter for only $2.71 extra in shipping (to US), so this would be
a good time.
Thanks!
--
Andrew
_______________________________________________
Thinkpad mailing list
[email protected]
http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
