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Guru3D.com » News » Both Mantle and DX12 can combine video memory

Both Mantle and DX12 can combine video memory

by Hilbert Hagedoorn on: 02/03/2015 03:33 PM | source: | 48 comment(s)
Both Mantle and DX12 can combine video memory

Robert Hallock (Head of Global Technical Marketing at AMD)  shared something interesting on Twitter earlier on. You guys know that when your have a GPU graphics card combo with dual-GPUs that the memory is split up per GPU right ? 

Thus an 8GB graphics card is really 2x4GB. As it stands right now, this will be different when DirectX 12 comes into play and apparently already is with Mantle. Basically he states that two GPUs finally will be acting as ‘one big’ GPU. Here's his complete quote:

Mantle is the first graphics API to transcend this behavior and allow that much-needed explicit control. For example, you could do split-frame rendering with each GPU ad its respective framebuffer handling 1/2 of the screen. In this way, the GPUs have extremely minimal information, allowing both GPUs to effectively behave as a single large/faster GPU with a correspondingly large pool of memory.

Ultimately the point is that gamers believe that two 4GB cards can’t possibly give you the 8GB of useful memory. That may have been true for the last 25 years of PC gaming, but thats not true with Mantle and its not true with the low overhead APIs that follow in Mantle’s footsteps. – @Thracks (Robert Hallock, AMD)

There is a catch though, this is not done automatically, the new APIs allow memory stacking but game developers will need to specifically optimize games as such. An interesting statement.

Keep in mind though, this is a marketing rep talking ... 



Both Mantle and DX12 can combine video memory




« Ubisoft Enabling Fraudulent Far Cry 4 Keys For Customers Already Playing · Both Mantle and DX12 can combine video memory · Lawyers homing in on Nvidia after GTX 970 Memory allocation Claims »

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jimdove
Senior Member



Posts: 345
Joined: 2010-12-04

#5006714 Posted on: 02/03/2015 03:36 PM
o-O

if true this will make SLI users cream :)

vbetts
Moderator



Posts: 15142
Joined: 2006-07-04

#5006716 Posted on: 02/03/2015 03:37 PM
If this is true and not just a marketing ploy, wouldn't this also work on any crossfire or sli setups done with two physical graphics cards?

fantaskarsef
Senior Member



Posts: 14163
Joined: 2014-07-21

#5006720 Posted on: 02/03/2015 03:41 PM
Oh, now they want to bring in their hbm and dual gpu cards I think. 295 sales might gain a bit momentum and, who knows, maybe a 385x or something.

We will see if this really works the way he pointed out.

DeskStar
Senior Member



Posts: 1307
Joined: 2011-01-11

#5006728 Posted on: 02/03/2015 04:00 PM
Bring it!!

Quad TITAN's standing by to stack some memory.....! Just hope they don't pull one over on us about how this is just for the newest brands and no backward compatibility with us guys with the older hardware.

Please do not be another marketing rep blowing smoke attempting to rattle the cages of us hardware freaks that are out there.

hapkiman
Member



Posts: 66
Joined: 2014-12-22

#5006736 Posted on: 02/03/2015 04:09 PM
We shall see if what he says really works. I've seen a lot of claims over the years by different companies that turned out to be BS. Cautiously optimistic.

:banana:

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