A31p color depth, 16 or 32 bit?

[stingbandel]

To those of you who have A31, I would like to know what setting do you have on the color depth. Is it 16 or 32?


Thanks

[shadowlight]

32bit at both machines (A31p and X31)

[stingbandel]

If you set it up at 32, will it cause a dead pixel on it? If I am not mistaken the lcd only can handle 16. Maybe others can confirm me?

thanks

[JHEM]

All of the "p" models can run at 32BIT color depth with no problems and certainly without causing a dead pixel.

My A30p, A31p (both 15" UXGA), both T41p's and my T42p (all 14.1" SXGA+) are all set at 32BIT under XP.

Some techies will argue that LCDs are inherently 24BIT.

Regards,

James

[doppelfish]

All of the "p" models can run at 32BIT color depth with no problems ...

And they do not because the LCD "allows" this, but because the graphics subsystem has enough memory to store, e.g. 1600x1200 pixels with 32bit/pixel.

... and certainly without causing a dead pixel.

Indeed, you can't kill pixels by 'stuffing' too much color into them. But don't worry, they die by themselves over time.

Some techies will argue that LCDs are inherently 24BIT.

They would be "true" 32bit if they could become translucent (:

No, really: For the usual RGB representation, you need 3x8bit (8bit red, 8bit green and 8bit blue), thus 24bit per pixel is the minimum. If you're storing an image (think of the contents of a layer in gimp or photoshop), you may want to store another 8bit of alpha, i.e. translucency, requiring a total of 32bit per pixel. When you're storing pixels in graphics memory so that the graphics chip can read out the memory and send the contents to the screen, there's no point in having an alpha channel, right?

If graphics memory needs aligned access (for speed or to function at all), you'll align the 24bit chunks to 32bit, wasting the 'remaining' 8bit. Suppose you want your A30p at the usual 1600x1200 pixels; if the graphics system *requires* 32bit alignment, you better have 1600x1200x32bit of graphics memory available, although it only contains 1600x1200x24bit worth of information.

Hmmm ... "New IBM ThinkPad T44p features translucent LCD" ... I'd buy that stuff.

[a31pguy]

32-bits all the way.

[stingbandel]

ok thanks for the info. I am using 32 now..

[doppelfish]

Hmmm ... "New IBM ThinkPad T44p features translucent LCD" ... I'd buy that stuff.

Oh Dear! They Do!