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post #161 of 422
Quote:
Originally Posted by Seronx View Post

You can deploy the firmware via the dispayport cable(or even via the USB hub). It is actually quite easy to upgrade 1.2/1.2a to 1.2a (AMD Refresh-Sink Enabled).

are newer MST hubs required than what's available right now?
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post #162 of 422
Quote:
Originally Posted by Ultracarpet View Post

are newer MST hubs required than what's available right now?
What you need:
GPU with the Sea Islands instruction set. (Hawaii, Bonaire, Kaveri, Kabini)
DisplayPort cable.
Monitor with DisplayPort (2011 and newer).

Then a firmware uploader from the monitor manufacture or chipset manufacture.
Edited by Seronx - 4/6/14 at 7:08pm
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post #163 of 422
Quote:
Originally Posted by Seronx View Post

What you need:
GPU with the Sea Islands instruction set. (Hawaii, Bonaire, Kaveri, Kabini)
DisplayPort cable.
Monitor with DisplayPort (2011 and newer).

Then a firmware uploader from the monitor manufacture or chipset manufacture.

..No hub in between?
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post #164 of 422
Quote:
Originally Posted by Ultracarpet View Post

..No hub in between?
Quote:
Originally Posted by Ultracarpet View Post

are newer MST hubs required than what's available right now?

You would still require a hub, in the theory crafting that is going on.

The issue you may run into, something Nvidia touched on briefly, is latency and the overall timing. Someone with more knowledge than I might correct this, but if you are using a hub in the middle you introduce (or don't get rid of) latency.

One of the big points with G-Sync is you get V-Sync smoothness, without the added latency that V-Sync puts in. A hub in the middle isn't able to do this, and it is part of the reason the G-Sync module has 768MB of RAM on it.

Basically, Nvidia didn't go the hub route, even though easier, because it didn't achieve what they were going for. It didn't allow them to get the smooth motion without latency.
    
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post #165 of 422
Quote:
Originally Posted by Ultracarpet View Post

..No hub in between?
You don't need a hub unless multi-monitor and you only have one DisplayPort output.

---
The MSA TIMING PARAMETER IGNORE, allows these to be ignored:
HTotal -> Total number of pixel in a horizontal line.
VTotal -> Total number of lines in the video frame.
HStart -> Start of active video pixels relative to HSync.
VStart -> Start of active video lines relative to VSync.
HSyncPolarity/HSyncWidth
VSyncPolarity/VSyncWidth

Normally, the sink(the monitor in this case) must be able to read all of the MSA packets. The extended ignore means that the sink ignores all of the MSA packets and must regenerate the video feed itself. It basically forces the monitor to have the same frame rate as the GPU.
Edited by Seronx - 4/6/14 at 8:16pm
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post #166 of 422
Quote:
Originally Posted by Seronx View Post

You don't need a hub unless multi-monitor and you only have one DisplayPort output.

---
The MSA TIMING PARAMETER IGNORE, allows these to be ignored:
HTotal -> Total number of pixel in a horizontal line.
VTotal -> Total number of lines in the video frame.
HStart -> Start of active video pixels relative to HSync.
VStart -> Start of active video lines relative to VSync.
HSyncPolarity/HSyncWidth
VSyncPolarity/VSyncWidth

Normally, the sink(the monitor in this case) must be able to read all of the MSA packets. The extended ignore means that the sink ignores all of the MSA packets and must regenerate the video feed itself. It basically forces the monitor to have the same frame rate as the GPU.

So the purpose of NVidias ASIC is what? I thought that an SST or MST hub would be the ASIC much like the gsync module.... I am so confused.
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post #167 of 422
Quote:
Originally Posted by Ultracarpet View Post

So the purpose of NVidias ASIC is what? I thought that an SST or MST hub would be the ASIC much like the gsync module.... I am so confused.
The G-Sync ASIC pairs the frame time of the GPU and the scan rate of the monitor. The ASIC has to be fairly powerful to actually do this.

AMD's implementation doesn't require an ASIC and can use the existing parts in monitors. The implementation is close to an enhanced DDM(Direct Drive Monitor) via DP and eDP.
Edited by Seronx - 4/6/14 at 9:54pm
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post #168 of 422
Quote:
Originally Posted by Seronx View Post

The G-Sync ASIC pairs the frame time of the GPU and the scan rate of the monitor. The ASIC has to be fairly powerful to actually do this.

AMD's implementation doesn't require an ASIC and can use the existing parts in monitors. The implementation is close to an enhanced DDM(Direct Drive Monitor) via DP and eDP.

hmm... and the plot thickens.
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post #169 of 422
Quote:
Originally Posted by Ultracarpet View Post

hmm... and the plot thickens.
G-Sync = GPU frame rate and Monitor refresh rate are synchronized via the ASIC.

Before G-Sync
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_Tearing-1024x468.jpg
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_Stuttering-1024x467.jpg

With G-Sync:
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_G-Sync-1024x438.jpg

If the monitor is 60 Hz and G-Sync enabled, and you are playing Quake Live in which you are getting 300+ fps. The G-Sync ASIC is probably blending the frames down to 60 Hz/60 fps. If the monitor is 60 Hz and G-Sync enabled, and you are playing Crysis 4: The Slowdown with variable FPS between 30 to 60 fps. The G-Sync ASIC is actively changing the refresh rate of the monitor to match the GPUs displayed FPS.

AMD's/VESA's implementation = GPU frame rate and Montior refresh rate are coupled via the lack of MSA Timing packets.

If you have a 60 Hz monitor with DisplayPort and an AMD graphics card with ignore MSA timing. In which you are playing Crysis 4: The Slowdown with a variable FPS between 30 to 60 fps. The monitor is slaved to the FPS being outputted by the GPU, FPS = Hz. In the case of above 60 Hz with a 60 Hz monitor, it would probably function much like the G-Sync but the GPU is doing the blending.
Edited by Seronx - 4/6/14 at 11:19pm
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post #170 of 422
Quote:
Originally Posted by Seronx View Post

G-Sync = GPU frame rate and Monitor refresh rate are synchronized via the ASIC.

Before G-Sync
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_Tearing-1024x468.jpg
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_Stuttering-1024x467.jpg

With G-Sync:
http://www.blurbusters.com/wp-content/uploads/2013/12/FrameDeliveryGraphic_G-Sync-1024x438.jpg

If the monitor is 60 Hz and G-Sync enabled, and you are playing Quake Live in which you are getting 300+ fps. The G-Sync ASIC is probably blending the frames down to 60 Hz/60 fps. If the monitor is 60 Hz and G-Sync enabled, and you are playing Crysis 4: The Slowdown with variable FPS between 30 to 60 fps. The G-Sync ASIC is actively changing the refresh rate of the monitor to match the GPUs displayed FPS.

AMDs/VESA implementation = GPU frame rate and Montior refresh rate are coupled via the lack of MSA Timing packets.

If you have a 60 Hz monitor with DisplayPort and an AMD graphics card with ignore MSA timing. In which you are playing Crysis 4: The Slowdown with a variable FPS between 30 to 60 fps. The monitor is slaved to the FPS being outputted by the GPU, FPS = Hz. In the case of above 60 Hz with a 60 Hz monitor, it would probably function much like the G-Sync but the GPU is doing the blending.

Ok this makes sense. So essentially we are waiting for firmware updates for dp 1.2 on monitors and sea island cards, and a driver implementation? Also do you believe there be a performance hit/latency increase
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Overclock.net › Forums › Components › Monitors and Displays › [Hardware.fr] AMD FreeSync ': Proposal adopted by VESA