Offtopic: Thoughts on new gsync module with $2600 fpga and 3GB of DDR4?

[max.bo...@gmail.com]

Hey,

pc-perspective just tore down the UHD HDR 144Hz Gsync Monitor and took a look at the panel and the gsync module.

https://www.pcper.com/reviews/Graphics-Cards/ASUS-ROG-Swift-PG27UQ-27-4K-144Hz-G-SYNC-Monitor-True-HDR-Arrives-Desktop/Tea

What are you guys thinking about the RAM and the massively expansive fpga? Digikey

I am really confused by now. What is all that processing power needed for?

Do you think such a monitor can't be done with cheaper components?

This kind of destroys my hopes for a second generation ZisWorks driver with adaptive sync some day in the future.

Sorry if this is too off-topic.

Greetings,

Max

[ZisWorks]

Totally of interest, thanks for the link!

They must have cut a really good deal to be able to pull this off profitably.

There are cheaper ways to do it, but if you want local dimming and overdrive done well with a vrr signal, there is some effort to be done on a very high speed data stream. If thats the fpga that they chose, Im sure it isnt without reason.

It would be really interesting to generate a pinout and be able to make open firmware for it.

[max.bo...@gmail.com]

I would chip in 20 bucks for you to buy that Asus PG27UQ, but that isn't even 1% of the total price :D

So do you think freesync will never be able to support HDR with local dimming on the "cheap"?

And why do you think isn't Nvidia doing custom silicone?

[ZisWorks]

I'm surprised that they haven't done so already.  Gsync came out pretty quickly so having the first ones be FPGA based was reasonable, but they've been shipping for years in significant volume.  Really surprises me that they didn't make an asic for it.  Maybe it is something that they are working on already but haven't shown?  Dunno.

[rob...@swiecki.net]

Since somebody said the magical word "fpga" and some time ago I found this link - https://www.xilinx.com/products/intellectual-property/ef-di-displayport.html (DP1.4 decoder in FPGA): is this something that can be (even hypothetically) used to create DP2LVDS board supporting DP1.3/1.4? Could it be economically feasible?

[ZisWorks]

Yes, but I didn't go that route because of pricing and extra development work.  In the end, it was easier and cheaper to use dedicated DP receiver chips to reduce potential problems with a wide range of cables and sources to test against.

[max.bo...@gmail.com]

Another question:
Nvidia uses chroma sub sampling to get more than 120Hz out of DP.
Is display stream compression not an option at all for VRR?

[ZisWorks]

DSC is absolutely compatible with VRR.  DSC only operates on a two-line buffer.