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Forums - Gaming - Understanding why Xbox One doesn't need GDDR5 RAM

disolitude on 26 June 2013
ethomaz said:

CGI-Quality said:

I must agree here, especially when I just did a test like this. I ran my most intensive game (no need to talk about my specs) and, at most, I used 3.46GB of my total RAM, and up to the 2GB of VRAM on the card.

You will start to see games for PC using more RAM now... the videoscards will have 3/4/6GB standard... no more 1/2/4GB.

It all comes down to how the video card drivers manage RAM usage. Nvidia has an advantage over AMD there. A game with a 7970 will use 2.5 GB of RAM while the same game will use 1.8 GB on GTX 770 and run better.

Forums are full of examples like that, infact most people think that Nvidia GK104 can't even untilize 4GB or RAM properly and that people buying 4GB 770s 680s 670s are just getting ripped off.

When Crysis 3 maxed out with every filter uses less than 2 GB or ram at 1080p, I think its safe to say that consoles with 5 GB of total memory are safe from running out of RAM.



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ethomaz on 26 June 2013

disolitude said:

It all comes down to how the video card drivers manage RAM usage. Nvidia has an advantage over AMD there. A game with a 7970 will use 2.5 GB of RAM while the same game will use 1.8 GB on GTX 770 and run better.

Forums are full of examples like that, infact most people think that Nvidia GK104 can't even untilize 4GB or RAM properly and that people buying 4GB 770s 680s 670s are just getting ripped off.

When Crysis 3 maxed out with every filter uses less than 2 GB or ram at 1080p, I think its safe to say that consoles with 5 GB of total memory are safe from running out of RAM.

That will change soon.

PC games are limited by Crysis (2007) level due the consoles... now with the new gen we will see again a leap like Crysis did.



disolitude on 26 June 2013
ethomaz said:

disolitude said:

It all comes down to how the video card drivers manage RAM usage. Nvidia has an advantage over AMD there. A game with a 7970 will use 2.5 GB of RAM while the same game will use 1.8 GB on GTX 770 and run better.

Forums are full of examples like that, infact most people think that Nvidia GK104 can't even untilize 4GB or RAM properly and that people buying 4GB 770s 680s 670s are just getting ripped off.

When Crysis 3 maxed out with every filter uses less than 2 GB or ram at 1080p, I think its safe to say that consoles with 5 GB of total memory are safe from running out of RAM.

That will change soon.

PC games are limited by Crysis (2007) level due the consoles... now with the new gen we will see again a leap like Crysis did.

That may be so as I don't know what future will bring.  All I know is that Cryengine 3 based Crysis 3 needs 1000 Watts of PC power and dual 400 dollar GPUs to run at 1080p maxed out at 60 fps.

Not sure how you expect this giant leap to happen considering Cryengine 3 and Unreal 4 will be the main engines of choice for next gen...



Hynad on 26 June 2013
disolitude said:
ethomaz said:

disolitude said:

It all comes down to how the video card drivers manage RAM usage. Nvidia has an advantage over AMD there. A game with a 7970 will use 2.5 GB of RAM while the same game will use 1.8 GB on GTX 770 and run better.

Forums are full of examples like that, infact most people think that Nvidia GK104 can't even untilize 4GB or RAM properly and that people buying 4GB 770s 680s 670s are just getting ripped off.

When Crysis 3 maxed out with every filter uses less than 2 GB or ram at 1080p, I think its safe to say that consoles with 5 GB of total memory are safe from running out of RAM.

That will change soon.

PC games are limited by Crysis (2007) level due the consoles... now with the new gen we will see again a leap like Crysis did.

That may be so as I don't know what future will bring.  All I know is that Cryengine 3 based Crysis 3 needs 1000 Watts of PC power and dual 400 dollar GPUs to run at 1080p maxed out at 60 fps.

Not sure how you expect this giant leap to happen considering Cryengine 3 and Unreal 4 will be the main engines of choice for next gen...

But developers can always keep assets readilly available in RAM to improve loading time. Not all of it will be used as frame buffer only.



platformmaster918 on 26 June 2013
sales2099 said:

DDR5 is the new CELL

same shit, different gen

yes we can't be excited for any tech in a new console because that means it's the new cell.  Devs have been praising the hell out of this system and the GDDR5 so I'll believe them.




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ethomaz on 26 June 2013

disolitude said:

That may be so as I don't know what future will bring.  All I know is that Cryengine 3 based Crysis 3 needs 1000 Watts of PC power and dual 400 dollar GPUs to run at 1080p maxed out at 60 fps.

Not sure how you expect this giant leap to happen considering Cryengine 3 and Unreal 4 will be the main engines of choice for next gen...

You know engines are scalable... the game and not the engine that defines how much resourse will be used.

The games will use more RAM for sure. 



Pemalite on 26 June 2013
ethomaz said:

CGI-Quality said:

I must agree here, especially when I just did a test like this. I ran my most intensive game (no need to talk about my specs) and, at most, I used 3.46GB of my total RAM, and up to the 2GB of VRAM on the card.

You will start to see games for PC using more RAM now... the low-end videoscards will have 2GB minimum... the high-end 4/6/8GB.


Low-end video cards as they are now, aren't capable of using 2Gb of Video Ram whilst sustaining any decent level of performance, might change in a few years, but next generation GPU's doesn't look like it will change that up.

disolitude said:

It all comes down to how the video card drivers manage RAM usage. Nvidia has an advantage over AMD there. A game with a 7970 will use 2.5 GB of RAM while the same game will use 1.8 GB on GTX 770 and run better.

Very true, AMD caches stuff like geometry data inside the Ram next to the graphics chip, nVidia throws it into the GPU's caches, so AMD generally has higher video memory consumption for some things.
Whether that will change though as AMD is re-writing the memory management software in the drivers remains to be seen.




www.youtube.com/@Pemalite

SlayerRondo on 26 June 2013
disolitude said:

Everyone knows GDDR5 RAM is more beneficial for GPU memory. System memory however is actually better off with DDR3 RAM due to sligtly lower latency. 

 

In terms of next gen console GPUs, below are the specs:

PS4 GPU Cores - 1152

Xbox One GPU Cores - 768

and

PS4 Peak Shader Throughput - 1.84 TFLOPS

Xbox One Peak Shader Throughput - 1.23 TFLOPS

 

Xbox One GPU has 33% less cores and 33% less peak shader throughput. Due to this, it needs less video bandwidth than PS4.

This leads us to video RAM:

PS4 Video Memory Bandwidth - 176 GB/s

Xbox One Video Memory Bandwidth ( DDR3 + sRAM cache) - 102 GB/s

 

Xbox One would not benefit at all from having 176 GB/s GDDR5 bandwidth due to lower GPU throughput. If they gave the Xbox more GPU cores it would be a different story however its RAM bandwidth is perfectly proportional to the GPU performance.

Its no secret that Xbox One has a less powerful GPU, but because it skipped on GDDR5 memory it can enjoy better system RAM, much less power consumption and heat, and cheaper manufacturing cost.

Just an FYI to those that say Xbox One is at a disadvantage for not having GDDR5 RAM.

Hush Child.

The Xbox One is weaker than the PS4, you must reconcile yourself with these facts if you intend to find peace.



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Where you either win

or you DIE

disolitude on 26 June 2013
SlayerRondo said:
disolitude said:

Everyone knows GDDR5 RAM is more beneficial for GPU memory. System memory however is actually better off with DDR3 RAM due to sligtly lower latency. 

 

In terms of next gen console GPUs, below are the specs:

PS4 GPU Cores - 1152

Xbox One GPU Cores - 768

and

PS4 Peak Shader Throughput - 1.84 TFLOPS

Xbox One Peak Shader Throughput - 1.23 TFLOPS

 

Xbox One GPU has 33% less cores and 33% less peak shader throughput. Due to this, it needs less video bandwidth than PS4.

This leads us to video RAM:

PS4 Video Memory Bandwidth - 176 GB/s

Xbox One Video Memory Bandwidth ( DDR3 + sRAM cache) - 102 GB/s

 

Xbox One would not benefit at all from having 176 GB/s GDDR5 bandwidth due to lower GPU throughput. If they gave the Xbox more GPU cores it would be a different story however its RAM bandwidth is perfectly proportional to the GPU performance.

Its no secret that Xbox One has a less powerful GPU, but because it skipped on GDDR5 memory it can enjoy better system RAM, much less power consumption and heat, and cheaper manufacturing cost.

Just an FYI to those that say Xbox One is at a disadvantage for not having GDDR5 RAM.

Hush Child.

The Xbox One is weaker than the PS4, you must reconcile yourself with these facts if you intend to find peace.

But thats exactly what my post says... reconciliation already took place. We are just ironing out the details of why its weaker...



Player1x3 on 27 June 2013
ClassicGamingWizzz said:
sales2099 said:

DDR5 is the new CELL

same shit, different gen


the new cell is the infinite power of the cloud


fixed