10GB vram enough for the 3080? Discuss..

Grim5 · 5 Mar 2021 at 19:16

I don't see how RT performance is at all related to infinity cache, infinity cache helps normal games cause they can get bandwidth starved with rdna2 cards slower vram - but RT tends to be less affected, its performance is more or less directly related to how many RT cores you stick on the card

Mesai · 5 Mar 2021 at 19:27

ASMB said:
I would not expect much more of an increase in 6000 series ray tracing than we have now because of infinity cache. What will make an impact is upscaling which is yet to be used on the 6000 series, then we will get a good idea how the 3000 series and 6000 series compare

It has been said that AMD has provided their current code for upscaling to some game developers. https://youtu.be/LZC3wxwMY_U?t=679

I expect the Radeon 7000 series to be much better at ray tracing than the 6000 series with better hardware support in the gpu

I can’t see AMD doing well on AI upscaling (compared to Nvidia), although by the time it’s usable and more widely available we will have the new series, likely with some dedicated hardware.

ASMB · 5 Mar 2021 at 19:43

Grim5 said:
I don't see how RT performance is at all related to infinity cache, infinity cache helps normal games cause they can get bandwidth starved with rdna2 cards slower vram - but RT tends to be less affected, its performance is more or less directly related to how many RT cores you stick on the card

Sorry but did you read the thread

"Ray tracing basically works by having dedicated hardware perform calculations of how the light rays behave, using a technique known as bounding volume hierarchy (BVH) traversal. Performing that task is very memory-intensive, which is why VRAM demands leap up when you enable ray tracing in a game. AMD says it’s able to keep “a very high percentage of the BVH working set” directly inside the Infinity Cache, reducing latency and improving overall performance."

Grim5 · 5 Mar 2021 at 19:51

ASMB said:
Sorry but did you read the thread

"Ray tracing basically works by having dedicated hardware perform calculations of how the light rays behave, using a technique known as bounding volume hierarchy (BVH) traversal. Performing that task is very memory-intensive, which is why VRAM demands leap up when you enable ray tracing in a game. AMD says it’s able to keep “a very high percentage of the BVH working set” directly inside the Infinity Cache, reducing latency and improving overall performance."

Interesting. Why didn't AMD give infinity cache to the consoles though, will any developers bother optimising for a piece of hardware a small handful of pc gamers have and no one else

ASMB · 5 Mar 2021 at 20:21

Grim5 said:
Interesting. Why didn't AMD give infinity cache to the consoles though, will any developers bother optimising for a piece of hardware a small handful of pc gamers have and no one else

I am sure anyone pc gaming for any length of time will have heard of poor ports to PC of console games, lets hope that the developer tools make it easy for the infinity cache to work well. I suspect that the infinity cache was not in the PS5 to keep costs down as it takes up a significant amount of die size

4K8KW10 · 5 Mar 2021 at 21:18

Grim5 said:
Interesting. Why didn't AMD give infinity cache to the consoles though, will any developers bother optimising for a piece of hardware a small handful of pc gamers have and no one else

Because the consoles chips are semi-custom, while the GPUs are inside job.

Semi-custom means that Microsoft and Sony decide what they need, not AMD, AMD only gives the desired IP that's needed and insures that the chips can be made.

Richdog · 6 Mar 2021 at 05:17

ASMB said:
Sorry but did you read the thread

"Ray tracing basically works by having dedicated hardware perform calculations of how the light rays behave, using a technique known as bounding volume hierarchy (BVH) traversal. Performing that task is very memory-intensive, which is why VRAM demands leap up when you enable ray tracing in a game. AMD says it’s able to keep “a very high percentage of the BVH working set” directly inside the Infinity Cache, reducing latency and improving overall performance."

What AMD say in their blurb and what is actually working well in practise are two different things.

Purgatory · 6 Mar 2021 at 19:27

CuriousTomCat · 9 Mar 2021 at 17:42

A modder has upgraded his 3070 to 16Gb

https://www.pcgamer.com/uk/modder-gives-rtx-3070-a-16gb-upgrade-before-nvidia-has-the-chance/

GAC · 9 Mar 2021 at 17:45

Purgatory said:
jays 2 pence snipped

got a feeling he will be making a follow up to that video as im sure others have proven afterburner memory measurement's arnt that accurate for whats actually being used. something to do with how games load in to gpu memory rather than how its actually used.

LtMatt · 9 Mar 2021 at 20:29

GAC said:
got a feeling he will be making a follow up to that video as im sure others have proven afterburner memory measurement's arnt that accurate for whats actually being used. something to do with how games load in to gpu memory rather than how its actually used.

Care to expand on this?

Grim5 · 9 Mar 2021 at 20:59

GAC said:
got a feeling he will be making a follow up to that video as im sure others have proven afterburner memory measurement's arnt that accurate for whats actually being used. something to do with how games load in to gpu memory rather than how its actually used.

It was a very basic quickly thrown together video from Jay, not well thought out and not actually testing vram properly

gpuerrilla · 9 Mar 2021 at 21:01

Grim5 said:
It was a very basic quickly thrown together video from Jay, not well thought out and not actually testing vram properly

Sounds exactly like Jay then..

Richdog · 10 Mar 2021 at 05:22

Grim5 said:
It was a very basic quickly thrown together video from Jay, not well thought out and not actually testing vram properly

Im surprised people watch this guy, he is not a knowledgeable hardware guru and he doesn't make good technical videos.

GAC · 10 Mar 2021 at 09:32

LtMatt said:
Care to expand on this?

from my limited understanding (and jay sort of mentions it in the video) afterburner measures the loading of stuff in to memory and then sits there rather than showing a live memory usage, and theres something about how games/drivers pre allocates how much memory it needs and if its at certain limits the software blocks stuff rather than the game running then stuttering, i think doom eternal did this not sure if there's ways around it though now. again this is from my limited understanding, think gamers nexus or digital foundry said it originally a month or so ago.

oguzsoso · 12 Mar 2021 at 15:18

Here comes a question about Afterburner;

Now this got me confused. Which one is allocated, which one is actually used? I gather "dedicated" is actually used, but is it or is it not?

Task manager reports Crysis Remastered uses 7.7 GB of dedicated memory. Afterburner per process dedicated memory says 5.2 GB. Afterburner also tells me a total of 7.6 of dedicated vram usage. So I gather 7.8 gb total me usage, and 0.2 gb of allocation.

Yet, there's inconsistency between task manager's dedicated Crysis stat and ab's dedicated Crysis stat? Is the 2.5 GB difference actual allocation?

Can someone clarify what is actually used and how much is allocated?

morta · 12 Mar 2021 at 16:54

so...is 10gb enough

the_chez · 12 Mar 2021 at 17:36

I would be curious to see a poll in this thread on how many have a 3080. Of those who have one, how many experience that they've maxed out the GPU in terms of VRAM.

I have one and for 1440p and the games that I play I would never need more than 10gb. That's just me though.

oldestgregg · 12 Mar 2021 at 18:22

My real world experience was the 3080 was that personally never had any issues with VRAM not being enough at 4k. Not once. I sold it and got a 3090 for the frames not the VRAM as it never once worried me it wouldnt be enough.

Would it be nice to have it? Sure, more is always better (unless you are talking years in prison

) but I genuinely think its not an issue and wont be for a while. Looking at it from the other side though, it IS cutting it a little close to the bone and while it may be enough now its not giving you enough of a buffer to be comfortable. We ARE talking ifs and buts there though at the end of the day.

gpuerrilla · 12 Mar 2021 at 21:02

oguzsoso said:
Here comes a question about Afterburner;

Now this got me confused. Which one is allocated, which one is actually used? I gather "dedicated" is actually used, but is it or is it not?

Task manager reports Crysis Remastered uses 7.7 GB of dedicated memory. Afterburner per process dedicated memory says 5.2 GB. Afterburner also tells me a total of 7.6 of dedicated vram usage. So I gather 7.8 gb total me usage, and 0.2 gb of allocation.

Yet, there's inconsistency between task manager's dedicated Crysis stat and ab's dedicated Crysis stat? Is the 2.5 GB difference actual allocation?

Can someone clarify what is actually used and how much is allocated?

7.7 is what you have after windows has done its borg thing. The game is using 5Gb. The difference is what is not being used. That's how I interpret it.