What the heck is all this down sampling business I have been hearing about?!  So far from what I have read is that you can modify the refresh rate and resolution on your screen to get a much higher resolution!?   I was wondering how if anyone knows the methodology behind this.

whoa, mind blown!  Is everyone doing this and I am late to the chase?!

http://forums.guru3d.com/showthread.php?t=346325
 
I don't know anyone here that uses it but me. I tried to get Im_hit to try it but his monitor wasn't playing nice. I use down sampling for 2560x1440 and sometimes 3200x1800 with my 1080p TV and I can do 60hz all the way up to about 3240x1822. If I want to do something crazy like 3840x2160 I need to lower my refresh rate to 53hz.

What is the risk involved? Does it burn out the monitor or something?  I am on an ASUS VG236H 3d monitor. From what I read I need to set my refresh to 60hz or less then try and downsample

gravedigger78

What is the risk involved? Does it burn out the monitor or something?  I am on an ASUS VG236H 3d monitor. From what I read I need to set my refresh to 60hz or less then try and downsample

 
Yes I think there might be a slight risk in damaging the monitor. I have not seen any reports of that happening though. For me the worst case scenario is you get stuck on a black screen or a completely distorted mess of colors and you have to reboot, hit F8 and choose "start windows in low resolution mode (640x480)"
 
Im curious if you'd be able to do 2560x1440 and keep the 120hz. Since I can go all the way up to 3240x1822 at 60hz and my TV can only do 60hz max.

Just saw this also...
 
120 Hz and 3D-gaming : due to current bandwidth limitations it isn't feasible to downsample down to a 1920x1080 resolution @ 120 Hz.
 
So it is possible but probably wont be easy.
 
also this...

For some people using refresh rates that aren't 30 Hz or 60 Hz exact, the custom resolution won't show up ingame OR selecting the resolution in game will make it crash. 

dyno0919

I tried it, but couldn't find a way to keep 120Hz. It may look nice, but nothing feels as nice as 120Hz. Even the most crisp image in the world couldn't get me to switch back to 60Hz.

try using manual timings and lower or raise the pixel clock by tweaking the horizontal and vertical total pixels. 

It's limited at 400mhz for kepler SLI.
http://120hz.net/content.php   scroll down
 
Also check out this thread. http://120hz.net/showthre...uot-JUST-HAPPENED-quot
 
There is a lot of good information and tweaks on 120hz.net
 
If you have a lightboost capable monitor. Try this tweak.
http://www.techngaming.co...nvidia-lightboost-r485

Halo_003

Just tried it with my ASUS VH226H. (21.5", 1080P). Very cool, gives me a lot of desktop real estate. Haven't tried a game yet, but this is really neat.

3200x1800 59hz:


2560x1440 60hz:



1080P feels weird now.

 
You should be able to get 3200x1800 @ 60hz if you use manual timings. U need to raise the pixel clock to something just under 165mhz. For example... set total pixels horizontal to 2400 and vertical to 1145 and test 3200x1800 @ 60hz. Should work.

Here is my list.

 

Here are my settings for 4KHD

Awesome!  Good luck running anything at that resolution though hehe.

Max Payne 3 @ 4KHD on high with 2x MSAA etc gets 30FPS roughly, 2560x1440 with same settings gets 60-70. Not bad for a single 580.

3840x2160 is just so high compared to 1920x1080 that it doesn't look any better than 3200x1800 on my TV. Even if a game runs great at 3840x2160. I'd still prefer running just 2560x1440 or 3200x1800. Anything higher than that doesn't look any better to me.
 
I did just test out max payne 3 at 3840x2160/55hz and was able to keep a solid 55fps. I even was able to record a smooth 30fps video using afterburner. Processing it in vegas now and will upload it to Youtube for kicks since they actually support 4K resolution now. Still doesn't look as good as it should.