Overclock.net › Forums › Components › Monitors and Displays › [Solved] Please explain why smaller TFT panels are limited to 75hz?
New Posts  All Forums:Forum Nav:

[Solved] Please explain why smaller TFT panels are limited to 75hz?

post #1 of 6
Thread Starter 
Serious Question.

I've calculated the video bandwidth at:
1920x1080 @ 60hz and it requires 124.42MHz
1024x768 @ 120hz and it requires 94.37MHz

Video bitrate:
1920x1080 @ 60hz = 2.99Gbit/s
1024x768 @ 120hz = 2.26Gbit/s

I don't know if I'm missing something, but a single link DVI cable is rated for 3.96Gbit/s.
Edited by Skylit - 3/8/11 at 2:11pm
post #2 of 6
I don't get what you're asking.
    
CPUMotherboardGraphicsRAM
Core i7 920 4ghz 1.25v Evga Classified E760/E762 Evga Gtx 480 + Galaxy GTX 480 SLI 6GB Corsair Dominator GT 1600mhz 
Hard DriveOSMonitorKeyboard
Crucial C300 256Gb, Samsung 7200rpm 320gb, 2x W... Windows 7 64-bit Home premium Dell U2410 1920x1200 Wireless Logitech 
PowerCaseMouseMouse Pad
Antec Quatro 1200w Corsair 800D Razer Death Adder Office Depot thingy 
AudioAudio
Asus Xonar STX Sennheiser HD555's 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Core i7 920 4ghz 1.25v Evga Classified E760/E762 Evga Gtx 480 + Galaxy GTX 480 SLI 6GB Corsair Dominator GT 1600mhz 
Hard DriveOSMonitorKeyboard
Crucial C300 256Gb, Samsung 7200rpm 320gb, 2x W... Windows 7 64-bit Home premium Dell U2410 1920x1200 Wireless Logitech 
PowerCaseMouseMouse Pad
Antec Quatro 1200w Corsair 800D Razer Death Adder Office Depot thingy 
AudioAudio
Asus Xonar STX Sennheiser HD555's 
  hide details  
Reply
post #3 of 6
Thread Starter 
Quote:
Originally Posted by Willanhanyard View Post
I don't get what you're asking.
Don't worry about it.


I figure newer 120hz LCD monitors still use a form of interpolation seeing as it's not possible to scale up with vertical and horizontal frequencies.
Edited by Skylit - 3/7/11 at 11:16pm
post #4 of 6
I'm thinking there's no market for 120hz 1024 x 768 displays, performance or otherwise.

I believe this is the only limitation?
Why upgrade?
(14 items)
 
Why overclock?!
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 760 ASUS 55i Sabertooth EVGA 960 4GB 8gb 1600mhz Vengeance 
Hard DriveHard DriveOSMonitor
120gb Intel 320 (OS) 500gb Samsung 850 Evo Win 7 64 Viewsonic VX2250-Wm 
PowerCaseMouseAudio
Seasonic G 550w Gold Lancool PC-K9B Logitech G5 X-Fi Titanium/AT-H700 
CPUMotherboardGraphicsRAM
Core i5 4690k Asus Z97 Sabertooth mk2 EVGA 970 8gb Kingston 1833mhz 
Hard DriveHard DriveCoolingOS
128GB Samsung 830 500GB Samsung 840 Evo allota fans but quiet! Win 7 64 
MonitorKeyboardPowerCase
Dell U2311H Rev. A01 Mechanical w/ Cherry Blues NZXT Hale 650w NZXT Phantom - white 
MouseMouse PadAudio
Anker CG100 Steelseries 9HD Sennheiser HD555 
  hide details  
Reply
Why upgrade?
(14 items)
 
Why overclock?!
(15 items)
 
 
CPUMotherboardGraphicsRAM
Core i5 760 ASUS 55i Sabertooth EVGA 960 4GB 8gb 1600mhz Vengeance 
Hard DriveHard DriveOSMonitor
120gb Intel 320 (OS) 500gb Samsung 850 Evo Win 7 64 Viewsonic VX2250-Wm 
PowerCaseMouseAudio
Seasonic G 550w Gold Lancool PC-K9B Logitech G5 X-Fi Titanium/AT-H700 
CPUMotherboardGraphicsRAM
Core i5 4690k Asus Z97 Sabertooth mk2 EVGA 970 8gb Kingston 1833mhz 
Hard DriveHard DriveCoolingOS
128GB Samsung 830 500GB Samsung 840 Evo allota fans but quiet! Win 7 64 
MonitorKeyboardPowerCase
Dell U2311H Rev. A01 Mechanical w/ Cherry Blues NZXT Hale 650w NZXT Phantom - white 
MouseMouse PadAudio
Anker CG100 Steelseries 9HD Sennheiser HD555 
  hide details  
Reply
post #5 of 6
Thread Starter 
Quote:
Originally Posted by pursuinginsanity View Post
I'm thinking there's no market for 120hz 1024 x 768 displays, performance or otherwise.

I believe this is the only limitation?
Nah I was just wondering if it was natively possible because a lot of people have been mentioning that a dual link DVI-I cable is required, but rather it's what's the panel it capable by itself on the vertical frequency. From research it seems like some 120hz PC monitors still use a form of interpolation, while others seem legit and true.

Example of a interpolated panel
http://www.viewsonic.com/products/vx2268wm.htm

Quote:
Frequency Fh: 24~82kHz, Fv: 50~85Hz
legit or false marketing?
http://www.viewsonic.com/products/vx...uhzion-lcd.htm

Quote:
Frequency Fh: 65~185kHz, Fv: 60~120Hz
With that said, I was silly and asked a stupid question because I later realized the max vertical frequency on most LCD's is 75. It's been awhile since I had to actually calculate this stuff w/ CRTS haha.

tl;dr: A low resolution 120hz LCD can run on a single link DVI-I cable without a hitch.
Edited by Skylit - 3/8/11 at 4:25pm
post #6 of 6
Quote:
Originally Posted by Skylit View Post
Nah I was just wondering if it was natively possible because a lot of people have been mentioning that a dual link DVI-I cable is required, but rather it's what's the panel it capable by itself on the vertical frequency. From research it seems like some 120hz PC monitors still use a form of interpolation, while others seem legit and true.

Example of a interpolated panel
http://www.viewsonic.com/products/vx2268wm.htm



legit or false marketing?
http://www.viewsonic.com/products/vx...uhzion-lcd.htm



With that said, I was silly and asked a stupid question because I later realized the max vertical frequency on most LCD's is 75. It's been awhile since I had to actually calculate this stuff w/ CRTS haha.

tl;dr: A low resolution 120hz LCD can run on a single link DVI-I cable without a hitch.
so wait, the acer 120hz , would be better than the view sonic playing games at 120hz at the same resolution?

or is the acer also interpolated? what's the difference? i assumed tv's used artificial interpolation, and pc monitors with 120hz, actually had a refresh that actually goes to 120hz

my monitor does list refresh rates up to 120hz, viewsonic model you listed.

so i assumed it was actual 120hz true

can you explain for me?
white phantom
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 GA X58 UD3R rev 2.0 zotac GTX 580 sli 6GB Corsair xms cl9 1600hz 
Hard DriveOptical DriveMonitorPower
Corsair ssd 32GB none asus 1080p 120hz, acer 1080p 120hz Thermaltake TR2 RX 850w 
Case
nzxt phantom 
  hide details  
Reply
white phantom
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 GA X58 UD3R rev 2.0 zotac GTX 580 sli 6GB Corsair xms cl9 1600hz 
Hard DriveOptical DriveMonitorPower
Corsair ssd 32GB none asus 1080p 120hz, acer 1080p 120hz Thermaltake TR2 RX 850w 
Case
nzxt phantom 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Monitors and Displays
Overclock.net › Forums › Components › Monitors and Displays › [Solved] Please explain why smaller TFT panels are limited to 75hz?