Side to side 720p/1080p is how much resolution?

Ive seen some laptops from dell stating its monitor are side to side 720p or 1080p, how much resolution is those two?

 

• 720p = 1280x720 -> AFAIK notebook with this resolution is rather new, mostly is using 1366x768 for showing 720p movie in 16:9 screen format.
• 1080p/i = 1920x1080

 

Actually, 720p is usually 1366x768, not 1280x720 (even though this is what it should theoretically be). My Dell Studio 15, for example, has the 720p display, and my native resolution is 1366x768.

 

no, technically, only 1280x720p is (16:9) 720p. but as a 1366x768 display (which is 768p, and sometimes even listed as that in the gpu driver settings) has more pixels, it can display 720p and thus gets a "capable of playing back 720p" hd ready sticker.

but as it get zoomed by a non-power-of-two-factor to display it without border, it reduces the actual quality of 720p by a huge amount btw. (it's 6.66666666666666666666666666667 percent, or by a factor of 1.066667 zoomed)

 

I'm just saying 1366x768 is a more accepted and common resolution for 720p. I guarantee if you go to Wal-Mart or Best Buy or something and look at 720p HD televisions, 9 out of 10 of them will have a display resolution of 1366x768; very few will be 1280x720.

 

The thing is that 1366x768=1049088 pixels and 1920x1080=2073600. We are talking of about 50.6% more viewing space on the WUXGA vs WXGA (mathematically speaking). On real life, letters are MUCH smaller on WUXGA and the screen has a lot more real state for placing stuff.

 

well, any 1080p screen can just as well play 720p, so can be called "1080p and 720p" screen. so anything bigger than 1280x720 "is 720p". 1366x768 included. but it still isn't the real, native 720p res. that is 1280x720p (which you can buy here actually quite often for tvs.. as they are more sharp, and we at switzerland at least care about quality )

 

WUXGA doesn't have 50.6% more pixels than WXGA. WXGA has 50.6% of the pixels that WUXGA has. WUXGA has about twice the pixels that WXGA has.

 

whoops. I placed it incorrectly lol. Sorry, fried brain after a full maths day at uni. Let me correct that.
WUXGA has double the pixels than WXGA.
Thanks Trottel

 

just wanted to state hat your "Thanks Trottel" means "Thanks, dump**s" in german.. did you know that yet, trottel? your names true meaning?

 

720p and 1080p are just vertical resolutions, they do not have a defined horizontal resolution, though 99% of the time it is based on 16:9 format.

And the p is for progressive scan, if you see and i it means interlaced.

 

I never really researched it, what's the difference between progressive scan and interlaced?

 

Its how the image refreshes on the screen.

I would explain it but one of the many explanations on google can do a better job of it than I can since they go all in depth and have pictures.

I'll tell you this, interlaced is bad.

 

720p and 1080p actually are defined in terms of HD video, but they are used colloquially (and often in marketing literature) incorrectly, as many things are. See MB=1024KB vs MB=1000KB for more incorrect/misleading uses of technical terms in marketing.

 

Progressive refreshes all the pixels at once, and interlaced does half of them for each frame, alternating by rows.