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Will Radeon 4800 series support Dx 11
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tahirahmed
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Default Will Radeon 4800 series support Dx 11 - 09-28-2009, 20:39 | posts: 165 | Location: Dammam, Saudi Arabia

Hello all,

As the title says it all, I want to ask that will Radeon 4800 series will actually support new Dx 11 ? which is introduced by 5800 series. I am asking this because I purchased my 4870 about an year or so and so far the card is serving me greatly, with all my games running smooth as silk in solid resolutions. I don't really want to invest in a new graphics card just now but I also want to try out the new Dx 11 games in Dx 11 mode. So is my 4870 good to go with Dx 11 ?

Thanks folks.
   
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DSK
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Default 09-28-2009, 20:43 | posts: 17,954 | Location: Coldwells,UK

No.

but don't worry about DX11 either it will take a good like 6 months to pump a good few proper DX11 games out
   
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tahirahmed
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Default 10-01-2009, 17:18 | posts: 165 | Location: Dammam, Saudi Arabia

Alrightie thanks for the info maybe after 6 months or few more months the price of 5800 series will come down or maybe they will come down sooner than that as Nvidia will release something new.
   
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Funky Doodle
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Default 10-01-2009, 17:43 | posts: 792

but ati said that 2000, 3000 and 4000 will support dx11 too or that is already old info?
   
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Markgpl
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Default 10-01-2009, 17:56 | posts: 649

There's no way that older hardware support newer standard if doesn't have the hardware resources, as radeon 2xxx series can't support dx10.1 even if it's a small change.
   
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blinx
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Default 10-01-2009, 18:07 | posts: 1,022 | Location: SoCal

No mate not possible
   
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vbetts
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Default 10-01-2009, 18:44 | posts: 10,438 | Location: Toledo Ohio

Quote:
Originally Posted by Funky Doodle View Post
but ati said that 2000, 3000 and 4000 will support dx11 too or that is already old info?
It supports some basic features, but not real features that are the selling point of dx11 such as tesselation.
   
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Funky Doodle
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Default 10-01-2009, 19:03 | posts: 792

Quote:
Originally Posted by vbetts View Post
It supports some basic features, but not real features that are the selling point of dx11 such as tesselation.
yeah, i thought so.
   
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stormy
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Default 10-01-2009, 19:53 | posts: 2,534 | Location: Toronto, Ontario

Quote:
Originally Posted by vbetts View Post
It supports some basic features, but not real features that are the selling point of dx11 such as tesselation.
Actually they do,

Quote:
A beast called the tessellator has been added which enables games developers to create smoother, less blocky and more organic looking objects in games. This is the change you’ll probably be most aware of. And it’ll show up when you look at the silhouettes of hills and mountains or the profiles of characters in games. Where artists previously had to trade off quality for performance, now artists will have the freedom to create naturalistic scenery. We’ve gotten used to seeing strangely blocky ears and noses on our opponents. But the new generation of games should allow those opponents to scare the heck out of us instead. The tessellator represents a natural next step in gaming hardware (in fact the Xbox 360 graphics chip that AMD designed already has a tessellator, and AMD graphics hardware has featured tessellator technology starting with the ATI RadeonTM HD 2000 series right up to the latest ATI RadeonTM HD 4000 series cards today).
http://blogs.amd.com/play/tag/tessellation/

As to how well it will work remains to be seen.
   
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Markgpl
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Default 10-01-2009, 20:26 | posts: 649

That tesellation implementation differs from dx11 tessellation, so stays dormant in series 2000 to 4000, and will stay dormant forever now that has changed in r800.
   
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gamerk2
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Default 10-01-2009, 21:48 | posts: 2,104 | Location: Medford, NY

Quote:
Originally Posted by Funky Doodle View Post
but ati said that 2000, 3000 and 4000 will support dx11 too or that is already old info?
Wrong.

http://www.bit-tech.net/bits/2008/09...hat-s-coming/3

Quote:
Having spoken with both Microsoft's Kevin Gee and AMD's Richard Huddy, we managed to confirm that the Xbox 360's (and by extension the Radeon HD 2000, 3000 and 4000 series) tessellator is not compatible with DirectX 11, but the DX11 tessellator is a superset of what's already on the market. Another good thing is that the Radeon HD 4000 series tessellator did go through a few changes, giving developers access to the feature in DirectX 10 applications – this wasn't possible with the tessellation unit inside both the HD 2000 and 3000 series GPUs.
Nevermind the core changes that DX11 introduced (new shader model, etc). The 4000 series is 10.1, thats their max, period.
   
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TDurden
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Default 10-01-2009, 21:52 | posts: 1,799 | Location: LT

Guys don't forget Compute Shader
Radeon 4800 will support Compute Shader 4.1
Compute Shader 5.0 is reserved for "real" DX11 hardware though.
   
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sykozis
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Default 10-02-2009, 03:30 | posts: 16,426 | Location: US East Coast

MS claimed during the development of DX11 that DX9 and DX10 hardware would not prevent the use of DX11, though you'd see a performance penalty. MS claimed that all DX11 features would be available to those of us using DX9/DX10 hardware through the use of an emulation feature, which as they explained, would allow the CPU to handle the DX11 specific "features", while a DX10 capable GPU handles the DX10 features.....or the CPU would handle the DX10/DX11 features, while a DX9 capable GPU handles the DX9 features. Whether this is true or not....I don't know because there's no DX11 games for me to test with.

BTW, simply downloading the Aug 09 DX update, does NOT give you DX11. You need to go here to get DirectX 11 on Vista: http://support.microsoft.com/kb/971644
   
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