DirectX 12 cuts power consumption in half and boosts FPS by 50%

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  3. DirectX 12 cuts power consumption in half and boosts FPS by 50%

User Info: Talk2DaHand

3 years ago#1
Microsoft has been touting the improvements which DirectX 12 will bring to the table. Listening to the claims of its creator is one thing, but seeing real-world tests on actual hardware is another. At SIGGRAPH 2014, Intel has demonstrated the performance and power benefits of DirectX 12 on a Surface Pro 3 (which uses the company's HD4400 graphics chip.)

The demonstration renders an asteroid field with 50,000 unique asteroids in it which equates to 50,000 draws per frame. Each asteroid is unique through procedurally-generating a combination of vertices, textures, and constants. To show the improvements, the demo is able to switch between DirectX 11 and 12 at the press of a button whilst locking the frame rate to keep the GPU workload constant.

When rendering exactly the same content, DirectX 12's power consumption was impressively over 50% less than its predecessor. A key improvement in DirectX 12 is its ability to intuitively share the workload across multiple cores, and the performance gains we are seeing here show this in action.

Reduced power consumption doesn't, of course, directly relate to increased performance. It does however lead to a much cooler device which as a side-effect allows the GPU to run hotter and faster. In a blog post on MSDN, Microsoft claims: "In some cases, DirectX 12 can take a game that’s otherwise unplayable on DirectX 11 without even increasing the power your device consumes!"

Intel demonstrated this through unlocking the frame rate in their demo to show a 50% increase in FPS (frames per second) using DirectX 12 - despite not drawing any extra power. Whilst not directly comparable, it could show promise to boosting the Xbox One's prowess.

Currently many game developers are choosing between a 1080p resolution at 30fps, or 900p at 60fps for their Xbox titles. The situation has been relieved somewhat through the June XDK which unlocked an extra 10% CPU power that was previously reserved for the Kinect peripheral. If a similar 50% power consumption reduction is possible on the console as found on the Surface Pro 3, then it too could see around a 50% increase in frame rate when DirectX 12 titles start hitting in 2015.

All of the gains displayed come directly from switching to DirectX 11 to DirectX 12. The API, through working with hardware partners, has lower-level access than ever before which significantly improves CPU utilisation. Even AMD, who has their own low-level API named 'Mantle', has put their support behind DirectX 12. Nvidia has announced all of its DirectX 11 GPUs will support the latest version.

User Info: InjusticeReborn

3 years ago#2
So, these improvements may see their way onto the Xbox One, but not as we see them here, as it's on a different device?
Soon to be PlayStation 4 owner.
"So you like the inferior console" - Izanaml

User Info: Warsuh

3 years ago#3
Hmm interesting. Sounds pretty cool that it can cut power consumption in half.

User Info: Warsuh

3 years ago#4
InjusticeReborn posted...
So, these improvements may see their way onto the Xbox One, but not as we see them here, as it's on a different device?

DirectX12 is coming to Xbox one but it probably wont be this powerful on there. We will just have to see. But if it can do the same results on Xbox one then damn.

User Info: Tenzhi

3 years ago#5
Interesting. But I won't get excited about it until I am impressed firsthand by a performance increase.
Cheating has gone hand-in-hand with gaming for centuries. Video games in particular often have cheats built right into the game.

User Info: Apex-Player

3 years ago#6
Say what you will but MS prioritize.

PC---Surface Pro---------?-xboxone.
Unbearable is it? The suffering of strangers, the agony of friends.
There's a secret song at the center of the world and its sound is like razors through flesh

User Info: a687947

3 years ago#7
There won't be a 50% increase in real world performance on any platform.

User Info: slowdog76

3 years ago#8
i cant pretend to understand all this stuff, but like someone else said, show me how it helps, if it helps, and then i will be impressed. im not going to speculate one way or the other without that
I hear and I forget. I see and I remember. I do and I understand.

User Info: Man_called_War

3 years ago#9
That's pretty interesting to hear. edit: nvm I was typing before my morning coffee.
Even a stopped clock, tells the right time, twice a day.

User Info: a687947

3 years ago#10
Man_called_War posted...
That's pretty interesting to hear. For anyone who know is the architecture of the consoles closer to integrated or discrete graphics cards?

they are integrated graphics on both systems, that's what an APU is.

"The most amazing thing that sets an AMD APU apart from traditional chips AMD(who bought ATI some years back if you remember) has combined the GPU and the CPU into one chip, or more precisely they have integrated a GPU into a CPU as from what I understand they are more stacked onto each other than just all melted into one. "
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