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4870x2 and DX11

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#1
noticed in heaven bench i can use dx11 with my 4870x2, was wondering how, looked around the board not seen anything about this, didnt want to ask again. but i do wonder
 
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#2
i think its a bug of heaven bench, its impossible for a hd 4000 run dx 11
 
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#3
Your card cannot run Directx11 it's hardware limited. If you can select DX11, it's will work DX10 only.. Software bug..
 
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#5
ok thanks for that lads, i was wondering, not anymore :)
 
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#6
user21 u want a dump of it set on dx11 ?
np
 
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#8
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#9
upgrade to 6870X2 on newegg
 
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#10
two of these with no egg please

6950 OC Twin FrozR II 2048MB GDDR5
 
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#11
no eggs here bud , im in UK
 
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#12
Some DX11 games/applications can be run on DX10.1 hardware, but of course you won't get any tessallation; for example you cannot apply AA in Alien vs Predator if you run it on DX9, you need DX11 for that; however if you have a DX10.1 card you can apply AA by running DX11.
 
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#13
Wow, there sure are a lot of people here who really don't seem to know what they are talking about.

The assumption that people seem to be making is that because the 4870x2 is DirectX10.1 hardware, that means it won't be able to run DirectX11 games and benchmarks. That is simply incorrect and not the case at all.

The 4870x2 should have little if any issues running any DirectX11 game. This applies to all DirectX10 and 10.1 hardware.

DirectX11 is a strict superset of DirectX10.1, which itself is a superset of DirectX10. Compatibility is as simple as shedding the small subset of feature that are not present in DirectX10/10.1.

When a DirectX11 program is run, it will first make a quick query to determine your card's "feature level". There are separate feature levels for DirectX11, DirectX10.1, and DirectX10 hardware. Once it has made that determination, the game will continue to run, in DirectX11, making use of all the features in the highest available feature level.

There is even a separate feature level just for 10.1 hardware, instead of grouping it in with other DirectX10 hardware. That means DX11 games using the DX10.1 feature level will still be taking advantage of the advances DirectX10.1 made over 10 that were not taken advantage of in the past due to Nvidia's lack of 10.1 adoption, advances which ultimately became a part of DirectX11. It's also important to understand that a game running in DirectX11 using the 10.1 feature level is NOT the same as the game simply running in DirectX10.1, as there are numerous improvements in the DirectX11 API itself that are not dependent on the underlying hardware.

http://msdn.microsoft.com/en-us/library/windows/desktop/ff476872(v=vs.85).aspx

So while your card will not have all the benefits of a card using the DirectX11 feature level, running a DirectX11 game on 10.1 hardware is really not a bad place to be. The main noticeable feature you are going to miss out on is Tessellation, and when I say "noticeable", keep in mind that everything is relative...

Tesselation enabled (DirectX11)


Tesselation disabled (DirectX10.1)


So there are differences, but it certainly doesn't involve not being able to play DirectX11 games. I'm a proud current user of 2x 4870x2 in Quad Crossfire and it has held up with age so well that my Quad-GPU config is even competitive with a 7970 in certain situations. Almost all of the games I play are DirectX11, and they all run perfectly.
 
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#14
You are also keeping up with the entire East Coast on power usage :toast:
 
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#15
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#16
Wow, there sure are a lot of people here who really don't seem to know what they are talking about.

The assumption that people seem to be making is that because the 4870x2 is DirectX10.1 hardware, that means it won't be able to run DirectX11 games and benchmarks. That is simply incorrect and not the case at all.

The 4870x2 should have little if any issues running any DirectX11 game. This applies to all DirectX10 and 10.1 hardware.

DirectX11 is a strict superset of DirectX10.1, which itself is a superset of DirectX10. Compatibility is as simple as shedding the small subset of feature that are not present in DirectX10/10.1.

When a DirectX11 program is run, it will first make a quick query to determine your card's "feature level". There are separate feature levels for DirectX11, DirectX10.1, and DirectX10 hardware. Once it has made that determination, the game will continue to run, in DirectX11, making use of all the features in the highest available feature level.

There is even a separate feature level just for 10.1 hardware, instead of grouping it in with other DirectX10 hardware. That means DX11 games using the DX10.1 feature level will still be taking advantage of the advances DirectX10.1 made over 10 that were not taken advantage of in the past due to Nvidia's lack of 10.1 adoption, advances which ultimately became a part of DirectX11. It's also important to understand that a game running in DirectX11 using the 10.1 feature level is NOT the same as the game simply running in DirectX10.1, as there are numerous improvements in the DirectX11 API itself that are not dependent on the underlying hardware.

http://msdn.microsoft.com/en-us/library/windows/desktop/ff476872(v=vs.85).aspx

So while your card will not have all the benefits of a card using the DirectX11 feature level, running a DirectX11 game on 10.1 hardware is really not a bad place to be. The main noticeable feature you are going to miss out on is Tessellation, and when I say "noticeable", keep in mind that everything is relative...

Tesselation enabled (DirectX11)
http://gotnorice.no-ip.org/tesson.png

Tesselation disabled (DirectX10.1)
http://gotnorice.no-ip.org/tessoff.png

So there are differences, but it certainly doesn't involve not being able to play DirectX11 games. I'm a proud current user of 2x 4870x2 in Quad Crossfire and it has held up with age so well that my Quad-GPU config is even competitive with a 7970 in certain situations. Almost all of the games I play are DirectX11, and they all run perfectly.
It's just what I said. :D
 
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#17
its hardware limitation not driver ,run dx11 on hd 4000 is impossible,its not only tesselation,if you wanna have a dual gpu go for the 6870x2 made from powercolor ,you dont have only dx11 but low power consumption and much more features
 
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#19
all interesting posts chaps even the one about that guys mum... thanks
 
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#20
Locksmith, you are not missing out. There are very few true DX11 games, there isnt that many true DX10.1 games either. At the end of the day running a DX11 game in DX10 mode will still look great, you won't even notice the difference. Plus you benefit from increased frame rate. I would rather run a game in DX10.1 mode @ 60 FPS than DX11 mode at 40 FPS.
 
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#21
Locksmith, you are not missing out. There are very few true DX11 games, there isnt that many True DX10.1 games strangely enough etiher. At the end of the day running a DX11 game in DX10 mode will still look great, you won't even notice the difference. Plus you benefit from increased frame rate. I would rather run a game in DX10.1 mode @ 60 FPS than DX11 mode at 40 FPS.
Please post a list of successful games that ran on dx10 cards through dx11 executable.
 
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#22
I cannot tell the difference in real play; sometimes I think DX11 is just a gimmick. On the other hand have a look at games like Hard Reset, it's a DX9 game and looks great.
 
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#23

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#24
http://en.wikipedia.org/wiki/List_of_games_with_DirectX_10_support
http://en.wikipedia.org/wiki/List_of_games_with_DirectX_11_support

The DX10 game library is small considering that DX10 has been about since 2006. In truth most PC games fall within DX9.0c
you didnt get my point or it may be im getting you all wrong. You said a dx10 or dx10.1 card can actually run a dx11 game. BUT thats not possible you see a game comes with both dx9 or dx10 executable files and for dx11 there is a seperate exe file provided which wont let you play the game if you execute it with a dx10 card. it reverts back to windows
 
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#25
you didnt get my point or it may be im getting you all wrong. You said a dx10 or dx10.1 card can actually run a dx11 game. BUT thats not possible you see a game comes with both dx9 or dx10 executable files and for dx11 there is a seperate exe file provided which wont let you play the game if you execute it with a dx10 card. it reverts back to windows
I know there is two executables. Like Crysis would have the hidden DX10 .exe in the folder.

I didnt mean that DX10 could run DX11 games. I meant that most DX10 and DX11 games have DX9.0 support and it can look almost the same. Most people won't notice the visual quality difference so it isnt worth losing frame rate on small selection of games for effects you won't care about.