Whats the math for vertical total and how long it takes to draw the frame?
When i got my Zisworks monitor i could overclock the VT to 2200~ and Zis said he wasn't able to get his above 1400 and that's why he never FreeSync a shot. He later game me a updated firmware for strobing to work.
How fast is 2200 and how would it compare to 240hz draw times?
Screenshot i sent him at the time since my phone wasn't working: http://i.imgur.com/gqaK1gP.png
Asus 240hz native new screen
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Re: Asus 240hz native new screen
Wait a second.
What monitor is this?
How are you getting firmwares?
I can't even get Benq to release a firmware to enable single strobing on their XL2735 or XL2540....so how are you getting firmwares?
What monitor is this?
How are you getting firmwares?
I can't even get Benq to release a firmware to enable single strobing on their XL2735 or XL2540....so how are you getting firmwares?
- Chief Blur Buster
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Re: Asus 240hz native new screen
1080p embedded in a 2200p vertical total video signal means the visible image part of the video signal is 1080/2200ths of 1/121th of a second at 121Hz. Mathematically this boils down to a ~1/246th of a second. That's 1080 visible, 1120 blanking -- calculated from (vertical total minus visible equals blanking).lexlazootin wrote:Whats the math for vertical total and how long it takes to draw the frame?
When i got my Zisworks monitor i could overclock the VT to 2200~ and Zis said he wasn't able to get his above 1400 and that's why he never FreeSync a shot. He later game me a updated firmware for strobing to work.
How fast is 2200 and how would it compare to 240hz draw times?
Screenshot i sent him at the time since my phone wasn't working: http://i.imgur.com/gqaK1gP.png
Formula in seconds:
Time spent in LCD scan = (vertical visible resolution / vertical total) x (length of refresh cycle)
Time spent in blanking interval = ((vertical total - vertical visible resolution) / vertical total) x (length of refresh cycle)
length of refresh cycle = 1 / refresh rate in Hz
In this case, you result in approx 0.0042 second (4.2ms) for this situation, for both numbers. Both numbers can be identical (or nearly so) if vertical total is exactly (or nearly) twice the vertical resolution. This means the LCD is spending half of the time scanning, and spending half of the time idling between refresh cycles.
Assuming instant mode operation (darn near directly scan from video signal). LCD scan, meaning "initiating the beginnings of the GtG transition". In most TN LCDs, this is done one pixel row at a time. The GtG completions lag approximately 1ms behind, so in high-speed videos, it looks like a vertical wipe. (Good example is high speed video of LightBoost). In your situation, if we pointed a high speed camera at this screen, the "vertical wipe" effect of the LCD scan -- would run top-to-bottom twice as fast, and add a much longer pause between refresh cycles.
So basically, for LCDs that are scanned directly from the video signal (instant mode operation) -- then VT2200 means a 121Hz refresh cycle is being scanned top-to-bottom-edge in 1/246th of a second. Basically, twice as fast as a regular 120Hz refresh cycle. You'll be needing the 240Hz LCD overdrive lookup table, for such a fast scanrate, as regular overdrive (tuned for 120Hz) won't necessarily look proper at this scanrate (closer scanrate used for 240Hz).
This produces a vertical blanking interval big enough to drive a truck through -- approx 4 milliseconds (A 120hz refresh cycle is 8.3ms, so that fast scan rate is half that). Assuming a 1ms of LCD GtG for a common TN gaming monitor -- then with with well-tuned overdrive (currently, I'm not 100% sure if zis tunes all G-to-G combinations equally for all scanrates), you could have 2-3ms strobe lengths for a much brighter strobed screen. Or ~0.5ms-1ms for a much-more-strobe-crosstalk-free screen given generous GtG grace period.
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- Chief Blur Buster
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Re: Asus 240hz native new screen
zisworks is a monitor motherboard replacement -- at least that's what I understand it.Falkentyne wrote:Wait a second.
What monitor is this?
How are you getting firmwares?
I can't even get Benq to release a firmware to enable single strobing on their XL2735 or XL2540....so how are you getting firmwares?
Firmwares are probably non applicable, since the motherboard is being replaced.
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Forum Rules wrote: 1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
2. Please report rule violations If you see a post that violates forum rules, then report the post.
3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!
Re: Asus 240hz native new screen
It's ZisWorks DVI board shipped with panel. Exclusive productChief Blur Buster wrote:zisworks is a monitor motherboard replacement -- at least that's what I understand it.Falkentyne wrote:Wait a second.
What monitor is this?
How are you getting firmwares?
I can't even get Benq to release a firmware to enable single strobing on their XL2735 or XL2540....so how are you getting firmwares?
Firmwares are probably non applicable, since the motherboard is being replaced.
Firmware is easy applicable. http://www.zisworks.com/
- lexlazootin
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Re: Asus 240hz native new screen
Yea, Zis sent me a little 'mini usb serial header' thing that i plugged into the board and did some putty stuff to update it.
Friendly bloke, answers all my annoying questions every time i have one
He's working on a 4k 120hz here if you want some updates on what he's upto https://hardforum.com/threads/seiki-se5 ... 71/page-51
Edit: Oh, and from my understanding he doesn't really control the overdrive at all (From my understanding)
And the strobe times (persistence) were supposed to be tied to your VT but mine was much darker then it was saying, making it a bit to dark on my panel. Since he can't really replicate the same performance and because he's working on other things i don't want to bothering him to much to try and fix it.
Friendly bloke, answers all my annoying questions every time i have one
He's working on a 4k 120hz here if you want some updates on what he's upto https://hardforum.com/threads/seiki-se5 ... 71/page-51
Edit: Oh, and from my understanding he doesn't really control the overdrive at all (From my understanding)
And the strobe times (persistence) were supposed to be tied to your VT but mine was much darker then it was saying, making it a bit to dark on my panel. Since he can't really replicate the same performance and because he's working on other things i don't want to bothering him to much to try and fix it.
Re: Asus 240hz native new screen
Why do we have 2 threads for this display? Hard to tell which one to post in. :p
Anyway it seems at least to me personally, it will be priced slightly bit better than I had guessed:
http://geizhals.eu/asus-rog-swift-pg258 ... 51609.html
Several german sites already listing it for 619 EUR, personally I had expected 649 EUR, so there's even chances of $599 list pricing on newegg and alike with the current eu<->usd pricing going on comparing other displays. I was guessing 50€/$50 USD higher personally.
While it's high cost for a 24.5" TN 1080p panel, considering it's a rather special one at 240Hz and GSYNC and 240Hz ULMB capability, it's still fairly "ok"'ish price.
Anyway it seems at least to me personally, it will be priced slightly bit better than I had guessed:
http://geizhals.eu/asus-rog-swift-pg258 ... 51609.html
Several german sites already listing it for 619 EUR, personally I had expected 649 EUR, so there's even chances of $599 list pricing on newegg and alike with the current eu<->usd pricing going on comparing other displays. I was guessing 50€/$50 USD higher personally.
While it's high cost for a 24.5" TN 1080p panel, considering it's a rather special one at 240Hz and GSYNC and 240Hz ULMB capability, it's still fairly "ok"'ish price.
- masterotaku
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Re: Asus 240hz native new screen
So does it work with ULMB at 240Hz or not? It would be great to have G-Sync+ULMB at that maximum refresh rate.
CPU: Intel Core i7 7700K @ 4.9GHz
GPU: Gainward Phoenix 1080 GLH
RAM: GSkill Ripjaws Z 3866MHz CL19
Motherboard: Gigabyte Gaming M5 Z270
Monitor: Asus PG278QR
GPU: Gainward Phoenix 1080 GLH
RAM: GSkill Ripjaws Z 3866MHz CL19
Motherboard: Gigabyte Gaming M5 Z270
Monitor: Asus PG278QR
Re: Asus 240hz native new screen
Yes that has been confirmed.masterotaku wrote:So does it work with ULMB at 240Hz or not? It would be great to have G-Sync+ULMB at that maximum refresh rate.
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Re: Asus 240hz native new screen
How does strobe crosstalk look at 240Hz?
Full screen of TestUFO Alien Invasion is a good test pattern for verifying strobe crosstalk. It will probably be very bad at top/bottom edges and relatively clear (faint ghosts) in middle. Generally, the higher the refresh rate, the worse the strobe crosstalk is, depending on how the monitor has been optimized.
Full screen of TestUFO Alien Invasion is a good test pattern for verifying strobe crosstalk. It will probably be very bad at top/bottom edges and relatively clear (faint ghosts) in middle. Generally, the higher the refresh rate, the worse the strobe crosstalk is, depending on how the monitor has been optimized.
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Forum Rules wrote: 1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
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3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!