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Nvidia Explains Why Their G-Sync Display Tech Is Superior To AMD's FreeSync

Gregster said:
Great watch Gerard and clears up a lot. So it is clear from watching that, that G-Sync has a clear advantage with storing the last frame in the memory buffer for when the frames drop below the monitors refresh rate, so hence no stuttering or tearing but when the Freesync panel hits the monitors refresh rate, it is basically on its own and still tries to show 35fps when only 30 fps is being delivered as an example and this in turn incurs judder and tearing.

I love science :D
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Wow, seems a big flaw in Freesync then :eek:

Glad I didn't wait for one :D
 
PCM2 said:
whereas on FreeSync models it's up to the manufacturers own electronics to handle that. Nvidia is able to tune the pixel overdrive intensity 'on the fly' as refresh rate changes, whereas the manufacturer's solutions have only really been tuned with specific fixed refresh rates in mind (such as 144Hz).
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Not true, the scalers are able to go between what ever the minimum is to the maximum. For example my monitors minimum is 25Hz and maximum is 120Hz it could go to what ever refresh rate in between, there is only set options for different refresh rates in between because who wants to choose set refresh rates in increments of 1Hz. Doesn't not mean the scaler is tuned to these refresh rates just what has been set. The scaler however would have trouble changing on the fly to different refresh rates of such increments on the fly which is what has to have been changed. Especially when it starts reaching its minimum and maximum refreshes. This is what you are seeing.
 
andybird123 said:
Yeah because AMD are perfect and never run attack ads on nvidia stuff, lmao

In fact the only reason nvidia have run this piece is in direct response to attacks from AMD
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AMD concentrated on emphasising the 'free' AS delivery from their end, what were they meant to do?

The difference being AMD are upfront about it and just say it, they don't bankroll tech sites to do vid spreads like this one(as they did with CrossFire years ago) on Nvidia's shortcomings, coz their skint.:p

On a more serious note, the fundamental difference being FS is on it's initial driver and getting hitching, how many drivers has Gsync had and it's still hitching andy?

wunkley said:
Don't want to **** on your parade bud, but as a swift owner and stuttering in games elimination obsessive, gsync is not a magic bullet by any means.
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In this instance, Nvidia/AMD should concentrate on getting their techs optimised as much as possible instead of ******* on their counterparts tech.
 
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Gsync isn't hitching, it sometimes flickers white for a few seconds if I alt-tab out of a game and back in, but in normal useage it doesn't happen

It isn't just the "free" aspect that AMD have launched attacks on, they've been saying that freesync is by far and away the best solution across the board, specifically mentioning latency and ranges supported
 
If I recall correctly wunkley was using 780ti SLI when he said that and the stutter he was seeing would have been from that. It's a non issue on single cards and I bet even AMD have trouble on CF for freesync.
 
r7slayer said:
Not true, the scalers are able to go between what ever the minimum is to the maximum. For example my monitors minimum is 25Hz and maximum is 120Hz it could go to what ever refresh rate in between, there is only set options for different refresh rates in between because who wants to choose set refresh rates in increments of 1Hz. Doesn't not mean the scaler is tuned to these refresh rates just what has been set. The scaler however would have trouble changing on the fly to different refresh rates of such increments on the fly which is what has to have been changed. Especially when it starts reaching its minimum and maximum refreshes. This is what you are seeing.
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I think you misunderstood what I was saying. Just because you can set a monitor to a given refresh rate does not mean that the pixel overdrive algorithm is optimised for that refresh rate. Monitor manufacturers typically optimise (I use the term loosely in many cases) their pixel overdrive for the static maximum refresh rate of the monitor and sometimes make minor adjustments for other common refresh rates such as 60Hz and 120Hz. They do not have the same level of fine-tuning for every refresh rate that Nvidia's overdrive solution does. And it may not be necessary to do so, anyway.
 
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Promoting your product then, what's AMD meant to say, they didn't mention any flaws, from memory it was along the lines of 'open Vesa standard, 'free' AMD AS delivery from the handshake, supports less latency over the VRR and support down to 9Hz ?

Can you point me to articles where AMD came out within a week exposing AS flaws like hitching/stutter, flaws with Gsync, or is it just articles where they bigged up their end?

From what Iv'e read here, looks like a lot of anti AMD posters are confusing forum writers words as AMD employees.:(

:)
 
Ayahuasca said:
If I recall correctly wunkley was using 780ti SLI when he said that and the stutter he was seeing would have been from that. It's a non issue on single cards and I bet even AMD have trouble on CF for freesync.
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That was just to show that there can be issues, it's not an attack, no one in here has stepped up to say they have had issues(both sides) when there are reports out there that there is.

It's evident they both have flaws, and it will be very interesting to see if AMD can get mgpu enabled on the April driver as AMD are imo lacking on the delivery aspect at this moment in time.
 
I am looking forward to seeing PCM2's results/review and I trust his judgement over many others. I enjoyed the way PCPer did that article as well and it does define the difference between G-Sync and Freesync and how each deals with the lower frames (and let's be honest, we have all been there at one time or another).
 
Phixsator said:
What i have been wondering for some time now is what happens when you OC a freesync enabled monitor.. Lets say you manage to get the LG 34um67 from 75 hz to 85hz while freesync is enabled.. Does that extend the variable refresh rate range? from 48-75 to 48-85? or does it just leave it at 48-75 and go into 85hz mode the second you go over 75 fps? or does it totally invalidate the enabled freesync part of the monitor and leave it at 85hz even when enabled through catalyst?
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Freesync does work between 48-75, as PCPER tested , it can go low to 40ish. Everything out of this range will be just as regular as now on normal monitor.
 
tommybhoy said:
Promoting your product then, what's AMD meant to say, they didn't mention any flaws, from memory it was along the lines of 'open Vesa standard, 'free' AMD AS delivery from the handshake, supports less latency over the VRR and support down to 9Hz ?

Can you point me to articles where AMD came out within a week exposing AS flaws like hitching/stutter, flaws with Gsync, or is it just articles where they bigged up their end?

From what Iv'e read here, looks like a lot of anti AMD posters are confusing forum writers words as AMD employees.:(

:)
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The AMD FAQ was released right in the middles of the ROG Swift release, it specifically mentions gsync on cost and latency, the next question also references being licence free and the question after references ranges down to 9hz

If it wasn't an attempt to reference gsync why bother mentioning gsync at all? AMD could have posted that same FAQ and done the same interviews without mentioning gsync at all, they could have just said that freesync was licence free and low latency and left it at that.

I'm not even attacking AMD, nor defending nvidia, just I find myself yet again pointing out that both companies do the same things.

But its fine when AMD do it, and comment worthy when nvidia do it.
 
andybird123 said:
The AMD FAQ was released right in the middles of the ROG Swift release, it specifically mentions gsync on cost and latency, the next question also references being licence free and the question after references ranges down to 9hz

If it wasn't an attempt to reference gsync why bother mentioning gsync at all? AMD could have posted that same FAQ and done the same interviews without mentioning gsync at all, they could have just said that freesync was licence free and low latency and left it at that.

I'm not even attacking AMD, nor defending nvidia, just I find myself yet again pointing out that both companies do the same things.

But its fine when AMD do it, and comment worthy when nvidia do it.
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Both promoting tech is fine in my book, supplying the basis for mgpu analysis and DIY kits, two different tactics, it fair works though.:cool:

Which is neither here nor there, at the end of the day, AS tech is of far more benefit than the caveats they bring and open to access regardless the vendor now, which gets lost in these discussions.:)
 
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To be honest while gaming i rarely ever notice tearing on the screen, probably as I'm more focused on what I'm doing as opposed to someone standing watching a game specifically looking for tearing. If amd can get some kind of driver side fix implemented somewhere down the line then it might be worthwhile, but if its on a per panel basis then the "waiting game" again comes into play which will be a pain in the ass.
 

Right, so this is very raw and very rubbish recording but it shows what happens when G-Sync is running at around 25fps... I had to run 5K with DSR to get under 30 fps and this to me is completely playable. Very smooth and it easily feels like 50+ fps.

I had my Mrs hold my phone while I just flew about a bit :D

DM has no idea what he is talking about!
 
Gregster said:

Right, so this is very raw and very rubbish recording but it shows what happens when G-Sync is running at around 25fps... I had to run 5K with DSR to get under 30 fps and this to me is completely playable. Very smooth and it easily feels like 50+ fps.

I had my Mrs hold my phone while I just flew about a bit :D

DM has no idea what he is talking about!
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That looks darn smooth. Now I just need to find a decent 120-144hz Gsync 4K monitor (doubt there are any?) that isn't going to cost me a fortune.

My current 4K monitor is fine but I like running over it's refresh rate especially in FPS games. Vsync is turd and some games have very strange tearing ... :(
 
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