Jump to content
  • Advertisement
Sign in to follow this  
hpdvs2

900 Hz Monitor? would it matter?

Recommended Posts

There isn't a hardware forum, and this seems the closest in relation to what I'm doing. 

I know we typically lose the ability to see past a certain FPS, but I'm working on a 3D tech, where the monitor will spin at 1800 RPMs, (30 / second) for an event.   This means that any side you look at will start to define the shape from that angle.  I've found some screens that claim 900hz, and I have some light weight renderings on my machine processing at well over a thousand FPS.  

Before I go and purchase the hardware, I'm wondering if the hardware can actually do it.  (forget about wires and such, those issues are already solved.)  my issue is whether or not, say a GeForce GTX 1080 ti could even output 900 hz.  900 FPS is easy, but it doesn't mean that the signal to the monitor is anywhere near that close.

This is also an experimental tech, so assuming I can even get everything working as planned, it doesn't mean it will look good at all.  I'd appreciate any knowledge on the 900hz/900fps issue, and also welcome frank discussion around the nature of this tech.

 

Also, I don't need this to be 4K, not even 1080p.  A 640x480 resolution could work, if we have a bandwidth issue over HDMI cables.

Share this post


Link to post
Share on other sites
Advertisement

I would start by taking a look at the data rates you'll be able to get from the various protocols (hdmi, dvi, displayport). Then look for monitors that could even support that kind of refresh rate

Looking at it, it looks like DVI can do up to 4.95Gb/s.

HDMI can do up to 18Gb/s, which means at 4k it can do 60fps.

DisplayPort is quite a bit better, so would probably be your best bet. right now, version 1.4 can do up to 32.4Gb/s, which looks like it can do 4k at 120fps. i'm sure you won't be using 4k, but these are just examples.

the next version of displayport is supposed to be able to do up to 40Gb/s, and eventually it hopes to get to 64.8Gb/s

These are just things i thought about to google. As far as monitors go, I'm only able to find them up to 240 Hz, but you'd probably be able to find something more by googling or talking to a company that makes monitors

I like the idea of a spinning monitor, If you get this working please post some videos

EDIT:

Quick search, looks like the nvidia gtx 1080 and 1070 only support up to 240Hz

Share this post


Link to post
Share on other sites

Well if you're using a digital output I should think you'd bypass any RAMDAC limitations.  HDMI 2.0 has 18Gbs bandwidth and 640*480*24*900= approx 6.7 Gbs so that should be OK.  Gaming monitors that are 240hz available IIRC.  So I would say it might be possible but I'm not sure... maybe there's a driver limitation or EDID (i think thats right) problem.

Also out of curiousity what will you be doing in regards to a standard cable twisting if the display rotates in a circle?  Whatever solution you come up with would have to handle hdmi2 bandwidth/noise standards.

Share this post


Link to post
Share on other sites

Are you planning to rotate around the screens center of mass? Otherwise i'd stay faaar away from an installation slinging otc screens around at like hundreds of km/h.

However, i read about 480hz display controllers. Check out zisworks for the x28, 28"  580p @ 480hz they say. They also sell just the controllers i think - so you could try to build your own from the panels and controllers. Just in case that x28 separates into pieces at 1800rpm... ;)

Maybe interesting to you, these guys: https://www.blurbusters.com/4k-120hz-with-bonus-240hz-and-480hz-modes/
Bunch of nerds obsessed with trying to get high frame/refresh-rates to reduce visual blur. That's where i found that monitor btw.

EDIT: also could try to put 2 or 3 of these back-to-back or in outward-facing triangle to reduce need for 900hz. would need to sync that so the screens are a frame apart. would increase G on the whole thing tho probably.

EDIT2: also making rotating-adapter for 3 hdmi (or the like) cables plus power... ugh... 

Edited by ninnghazad

Share this post


Link to post
Share on other sites
5 hours ago, ninnghazad said:

Are you planning to rotate around the screens center of mass? Otherwise i'd stay faaar away from an installation slinging otc screens around at like hundreds of km/h.

However, i read about 480hz display controllers. Check out zisworks for the x28, 28"  580p @ 480hz they say. They also sell just the controllers i think - so you could try to build your own from the panels and controllers. Just in case that x28 separates into pieces at 1800rpm... ;)

Yeah I hadn't even thought of that in my response... the structural integrity of the monitor might break down at such a high speed of rotation.  Thirty revolutions per second seems insane.

Oh and to the OP since this seems to be a professional project I would directly reach out to Nvidia and AMD and ask about frame rate limitations and bypassing them for your project.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!