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Is it worth to OC when response time and refresh rate don't

PostPosted: 03 Jan 2019, 01:02
by MonarchX
LG 32GK850G-B 1440p G-Sync VA display is awesome and can be over clocked to 165Hz, but I get confused about the whole response time matching refresh rate. If you read TFT Central review, it will show how 165Hz results in extra smearing http://www.tftcentral.co.uk/reviews/lg_ ... fresh_rate . But does that mean that in case of this display, higher refresh rate of 165Hz actually provides less clarity and more motion blur than 120Hz and 144Hz?

Re: Is it worth to OC when response time and refresh rate do

PostPosted: 03 Jan 2019, 01:23
by RealNC
Yes, there can be more smearing, because there's no time for the pixels to transition fully. You're still getting more frames, so animation is smoother, but clarity goes down a bit when the pixels have no time to complete the color transition.

You can of course run your own tests on testufo.com. Try 85Hz (if that's supported), 100Hz, 120Hz, 144Hz and 165Hz, and try to see at what refresh rate you can see increased blur/smearing.

In my case, I have an IPS 165Hz panel, but I can't actually see increased smearing at 165Hz. In my opinion, if you can't see it, it might as well not exist :mrgreen: I still use 144Hz though, because I usually use a 120FPS (or lower) limit with g-sync anyway, unless I play CS:GO, where I use 165Hz and vsync OFF (it's the only game where I don't use g-sync.)

Re: Is it worth to OC when response time and refresh rate do

PostPosted: 03 Jan 2019, 06:09
by MonarchX
Which test would you suggest? Maybe TFT Central doesn't know about VA panels needing to warm up for 30 minutes before testing because they show obvious smearing I can't notice what-so-ever, at any refresh rate.

Re: Is it worth to OC when response time and refresh rate do

PostPosted: 03 Jan 2019, 06:20
by RealNC
The ghosting test is best for this, because of its background color.

Re: Is it worth to OC when response time and refresh rate do

PostPosted: 06 Jan 2019, 20:49
by Chief Blur Buster
http://www.testufo.com/ghosting can really show the smearing that can occur on VA panels, especially on the darker background bar.

Some people don't easily see it and some people are sensitive to it.

Everyone is sensitive to different things. Some are sensitive to motion blur. Some are sensitive to flicker. Etc. Other times it's a "I never noticed until I started looking directly for it" type of thing. Or "I've never seen a non-VA, so I don't know what to expect" factor.