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View Full Version : PC Gaming on a 120hz HDTV


Maverick123w
03-15-10, 03:04 PM
My wife has been replaced by a cyborg I swear, that or she cheated on me and feels guilty :headexplode: (highly doubt it lol) but between insisting I get an SSD and a new Video card now she wants to move the 32" Vizio I game on into the living room and replace it with a 40"+ tv which I have no complaints about. (We watch lots of Netflix at my PC)

My current Vizio is 60hz/1080p. Is there any benefit to getting a 120hz tv? I've heard that 120hz pc monitors are different from 120hz tv's and that a pc will suffer from input lag on a 120hz HDTV. Is this true?

Thanks,
Will

Q
03-15-10, 03:08 PM
"It depends"

Most gaming monitors are designed to reduce input lag whereas most TVs are not. I did have a 60HZ Sharp Aquos with "gaming inputs" that had reduced lag. You would want to find similar wording and reviews.

ViN86
03-15-10, 04:09 PM
120Hz TV's still take 60Hz signals. So although the display can show 120 frames per second, the signal it accepts is still only 60 frames per second. 120Hz TV's interpolate extra frames (e.g. TruMotion) to get their 120 frames per second and that's what gives the appearance of a smoother image. However, this is just an illusion, since the TV is still only handling a 60Hz signal.

Also, 120Hz TV's are preferred for movies, which are typically shot at 24 FPS. On a 60Hz TV, 24FPS reduces to a 3:2 frame ratio. That means given 24 frames to display, it will refresh the first frame 3 times, the second frame 2 times, the third frame 3 times, etc. (3*12 + 2*12 = 60). Some people claim that this bothers them and they can see the stuttering. For a 120Hz TV, given 24 frames it will refresh each frame 5 times. This is the reason why 120Hz TV's are listed as 1080/24p devices.

120Hz computer monitors accept 120Hz signals. These signals are typically used for 3D vision goggles, giving each eye 60 FPS. 120Hz computer monitors will also be able to handle the 120Hz TV abilities listed above. However, you cannot use 3D vision at 120Hz on a 120Hz TV unless it explicitly states that it handles 120Hz signals.

I have a 120Hz TV and I have TruMotion (the feature that interpolates frames) turned off when I use my 360/PS3. It bothers me and it does suffer some lag because of the interpolation process. However, when watching TV (especially sports) I do like the TruMotion feature. The image transition is smooth and fast movements look clearer.

Hope that clarifies. Everyone else feel free to correct/clarify anything I said.

Maverick123w
03-15-10, 06:18 PM
Ok I get it now. So if I want to watch sports on the TV as well as use it as my monitor I should look for a 120hz set that you can turn off the "smooth motion" setting?

ViN86
03-16-10, 08:30 AM
Ok I get it now. So if I want to watch sports on the TV as well as use it as my monitor I should look for a 120hz set that you can turn off the "smooth motion" setting?

I think pretty much all 120Hz TV's have the ability to turn off the TruMotion feature.