JayPee Posted December 11, 2014 Posted December 11, 2014 (edited) Anybody with knowledge on the matter, help me out if you will... Since the day of old CRT monitors, Windows lets you set the refresh rate you would want that CRT monitor to operate on. Obviously, the monitor can only handle a maximum refresh rate and without overruling you can't set it higher than the monitor allows. Now on to the present day. CRTs are a thing of the past and I bet anybody younger than 16 yrs has never seen one in his/her life. In all seriousness, why does Windows still think and work with refresh rates? Why does it still treat my LCD like a CRT? Take my iiyama ProLite XU2390HS for example. It has a 5ms response time. This means that my monitor can present a new frame 1000ms/5ms=200 times per second. To talk in Windows' language: it has a refresh rate of 200 Hz. Why does Windows limit my LCD to 60 frames per second? This would mean a new frame is only presented every other 1000ms/60=16,6667ms. Edited December 11, 2014 by JayPee i7 4790K: 4.8GHz, 1.328V (manual) MSI GTX 970: 1,504MHz core, 1.250V, 8GHz memory
cichlidfan Posted December 11, 2014 Posted December 11, 2014 response time and refresh rate are not the same thing ASUS ROG Maximus VIII Hero, i7-6700K, Noctua NH-D14 Cooler, Crucial 32GB DDR4 2133, Samsung 950 Pro NVMe 256GB, Samsung EVO 250GB & 500GB SSD, 2TB Caviar Black, Zotac GTX 1080 AMP! Extreme 8GB, Corsair HX1000i, Phillips BDM4065UC 40" 4k monitor, VX2258 TouchScreen, TIR 5 w/ProClip, TM Warthog, VKB Gladiator Pro, Saitek X56, et. al., MFG Crosswind Pedals #1199, VolairSim Pit, Rift CV1 :thumbup:
JayPee Posted December 11, 2014 Author Posted December 11, 2014 Exactly. Not sure how this is an answer to my question though? :) i7 4790K: 4.8GHz, 1.328V (manual) MSI GTX 970: 1,504MHz core, 1.250V, 8GHz memory
PureEvil Posted December 11, 2014 Posted December 11, 2014 what is the refresh rate limit of your monitor? STEAM asus p8z68-v gen3, 2600k@4,5ghz(w/c), 16gb, 1080ti(w/c), ch fighterstick/gvl224-4000-8, ch pro throttle, Oculus Rift CV1+Touch, thrustmaster tx
outlawal2 Posted December 11, 2014 Posted December 11, 2014 Response rate refers to how quickly it starts to draw to the screen... REFRESH rate refers to how fast it actually draws the pixels on the screen and fills it up... The refresh rate still determines how fast it takes the graphics card to draw the pixels and fill up your screen. That has not changed with flat panels... What HAS changed is that flat panels have a NATIVE resolution and using anything other than that native resolution will yield different levels of crappy viewing.. (With CRTs you could use pretty much any resolution and they were all displayed nice and clear. Flat panels today look like crap if you select anything other than native resolution.) "Pride is a poor substitute for intelligence." RAMBO
agrasyuk Posted December 11, 2014 Posted December 11, 2014 Take my iiyama ProLite XU2390HS for example. It has a 5ms response time. This means that my monitor can present a new frame 1000ms/5ms=200 times per second. Nope, it doesn't mean that. To talk in Windows' language: it has a refresh rate of 200 Hz. Not windows language. I looked up specs of your monitor, and your vertical sync is in 56-75Hz, how can you draw more frames? I'd say read up a bit on vertical and horizontal scan rates. Those concepts apply to both CRT and LCD Anton. My pit build thread . Simple and cheap UFC project
JayPee Posted December 11, 2014 Author Posted December 11, 2014 Response rate refers to how quickly it starts to draw to the screen... REFRESH rate refers to how fast it actually draws the pixels on the screen and fills it up...I don't quite get what you are saying here.. Are you saying there is 5ms lag even BEFORE it starts drawing the 1st pixel of a frame? The refresh rate still determines how fast it takes the graphics card to draw the pixelsThis is not the refresh rate but the FPS. How fast the GPU can draw pixels is a limitation of the GPU/card, not the monitor. Nope, it doesn't mean that. Not windows language. I looked up specs of your monitor, and your vertical sync is in 56-75Hz, how can you draw more frames? I'd say read up a bit on vertical and horizontal scan rates. Those concepts apply to both CRT and LCDSo if my monitor has a different refresh rate than 1000ms/5ms=200, what is the exact role of the refresh rate in frame generation? And how can the rate at which a full screen gets refreshed be within a margin (56Hz - 75Hz)? i7 4790K: 4.8GHz, 1.328V (manual) MSI GTX 970: 1,504MHz core, 1.250V, 8GHz memory
agrasyuk Posted December 11, 2014 Posted December 11, 2014 (edited) So if my monitor has a different refresh rate than 1000ms/5ms=200, what is the exact role of the refresh rate in frame generation? And how can the rate at which a full screen gets refreshed be within a margin (56Hz - 75Hz)? 56-75hz means that in order for your monitor to show a picture the vertical scan freqency of your video signal has to be within that range. Pixel refresh time notes how long it takes a pixel to change color once it receives command to do so from panel controller. ADD: Consider reading "refresh rate" article in wiki. You will get good idea on what V and H scan rates are, what they have to do with image generation, how it relates to resolution of a monitor (why it is a range) . Edited December 11, 2014 by agrasyuk Anton. My pit build thread . Simple and cheap UFC project
blkspade Posted December 11, 2014 Posted December 11, 2014 As somewhat noted above, pixel response is typical GTG (gray to gray), which is individual pixels changing from gray to white and back to gray. Refresh rate is where its updating the entire screen per second. The only difference here between an LCD and CRT here is the whole LCD in bulk compared CRT's per line update which induces flicker. http://104thphoenix.com/
camsr Posted December 12, 2014 Posted December 12, 2014 No one misses CRTs, but the charm of the color saturation and blending is the only thing it will ever have over LED.
Recommended Posts