G-Sync is a con?

kee · 29 Jan 2015 at 11:15

http://gamenab.net/2015/01/26/truth...using-vesa-adaptive-sync-technology-freesync/

Finding it a bit hard to parse the writing, but my understanding after reading that page is that

1) Gsync is just a hardware module that says 'yes this is a gsync display'
2) The technology is standard and exists in any DP1.2 display, implementation is at the driver level
3) Just spent 500 quid on a display that is functionality identical to the 300 quid model without the gsync stamp on it

How can Nvid/OEMs get away with this?

Martini1991 · 29 Jan 2015 at 12:01

Pretty sure this was debunked as a hoax.

I'm finding it very interesting that there's many sub 100 post users with such anti-Nvidia posts.

kee · 29 Jan 2015 at 12:11

No conspiracy from me, just dropped a grand on nvidia-related kit, just wondering if I've been duped

andybird123 · 29 Jan 2015 at 12:14

this was posted a few days ago and thoroughly debunked, looks like the thread was deleted though

basically all the guy has done is hacked his drivers to enable a tick box, but the tick box does nothing without a gsync display connected as can be seen by the stuttering in his "gsync on" vid

kee · 29 Jan 2015 at 12:37

Fair enough, apologies for contributing to the FUD!

Reading around it seems like there's plenty of opinion on what is / isn't part of Gsync. Would be handy to have a trusted party tear it down and debunk this guy beyond 'your vid doesn't look any better'.

ICDP · 29 Jan 2015 at 12:40

Yep, hoax thoroughly debunked.

kee · 29 Jan 2015 at 12:44

http://www.overclock.net/t/1538208/nvidia-g-sync-free-on-dp-1-2-monitors/10#post_23466190

We started looking into this over at PCPer. There are some glaring issues with this guys thinking / results:

He claims the Altera FPGA was chosen because of its 'security features', but it's really nothing more than a SHA-1 engine that could be enabled (an FPGA is meant to be a programmable device with all sorts of uses, and some of those uses might include wanting hardware SHA-1 processing). GSYNC doesn't SHA-1 encrypt the bitstream and these GSYNC FPGA's are very likely not touching that optional portion of the chip.

His first 'proof' video was shot with a game running in a window. G-SYNC / adaptive sync doesn't work that way (full screen only).

Aside from the fact that it is very hard to actually show differences between VSYNC-on and GSYNC when pointing a camera at a PC display, closely examining his second video shows the same type of VSYNC judder present when he selects VSYNC or GSYNC.

Comments are disabled for both of his videos.

It looks like this guy just tweaked the drivers to let him enable GSYNC in software, regardless of the connected display, but it doesn't seem to actually be doing anything different in the end.

Not sure if I'm able to delete this thread, so please do so mods - sorry for flapping so easily guys - took the bait like a chump!

Scramz · 2 Feb 2015 at 00:42

G-Sync Mod/Hack

This fellow is claiming that you can bypass the G-Sync module with a modified driver allowing you to use Nvidia card with an Adaptive V-sync (Also Freesync) monitor.

Not sure how much weight there is to this but it is interesting.

http://gamenab.net/2015/01/26/truth-about-the-g-sync-marketing-module-nvidia-using-vesa-adaptive-sync-technology-freesync/

MOOGLEYS · 2 Feb 2015 at 01:36

I'm running G-Sync on my Asus G751 980m laptop and it works fantastic tbh.

I used a modded driver and set the screen to 100Hz. It only works on laptop screens using eDP connections as far as I'm aware.

The difference it makes turning it on and off is quite big tbh. Dying light is perfectly smooth with G-Sync on even if it drops into the 30fps levels. Turn it off and it's a bit stuttery even at 100Hz.

Perfect_Chaos · 2 Feb 2015 at 01:43

nevermind

CapitalOne · 2 Feb 2015 at 04:22

MOOGLEYS said:
I'm running G-Sync on my Asus G751 980m laptop and it works fantastic tbh.

I used a modded driver and set the screen to 100Hz. It only works on laptop screens using eDP connections as far as I'm aware.

The difference it makes turning it on and off is quite big tbh. Dying light is perfectly smooth with G-Sync on even if it drops into the 30fps levels. Turn it off and it's a bit stuttery even at 100Hz.

Hi - looking to pick one of these up so just to be clear you do mean the laptop panel and not an external screen?

Thanks

Father Torque · 2 Feb 2015 at 05:45

Confirmed. Tech site PcPer tested the leaked driver and says it runs smoothly and GSync is enabled without a special module. They even have the reply of NVidia on the matter:

http://www.pcper.com/reviews/Graphics-Cards/Mobile-G-Sync-Confirmed-and-Tested-Leaked-Alpha-Driver

Edit: More sites are on the subject. Extreme tech has a special report too: http://www.extremetech.com/extreme/198603-leaked-nvidia-driver-offers-taste-of-mobile-g-sync

Orangey · 2 Feb 2015 at 05:57

andybird123 said:
thoroughly debunked

No? They ARE doing sync without the module.

Final8y · 2 Feb 2015 at 06:02

Orangey said:
No? They ARE doing sync without the module.

Indeed, but it seems some dont know about the 2 different situations.

MOOGLEYS · 2 Feb 2015 at 07:39

CapitalOne said:
Hi - looking to pick one of these up so just to be clear you do mean the laptop panel and not an external screen?

Thanks

Yes the laptop display. I have it running at 100Hz with G-Sync enabled.

andybird123 · 2 Feb 2015 at 07:58

Orangey said:
No? They ARE doing sync without the module.

Gamenab said he had gsync working on desktop monitors, and in windowed mode at that

ubersonic · 2 Feb 2015 at 09:00

If you cast your minds back, when AMD first demonstrated Adaptive Sync running on laptops, Nvidia said at the time that Adaptive Sync was much easier to do with laptops than desktop displays due to their design, that's probably why the upcoming G-Sync laptops don't use a module and current laptops with compatible GPU's are mostly compatible.

The module is still required for desktop systems.

D1craig · 2 Feb 2015 at 09:02

I thought the AMD stuff was exactly the same. The hardware is already in the monitors but needs something to be enabled for it to work...

Gregster · 2 Feb 2015 at 09:39

Orangey said:
No? They ARE doing sync without the module.

Final8y said:
Indeed, but it seems some dont know about the 2 different situations.

Right guys, the reason that was debunked was G-Sync needs to be in Full screen mode to work and not windowed mode (as shown in the video). I do wish people would listen when told about these things.

tommybhoy · 2 Feb 2015 at 09:48

ubersonic said:
The module is still required for desktop systems.

Of course it does, Nlieia wouldn't lie to the target audience.