Comments on: Radeon HD 5770 Has No Double Precision Floating Point Support

By: OpenGL 4.0 FP64 GLSL Shaders Will Run in Software Mode on Radeon HD 5700 - 3D Tech News, Pixel Hacking, Data Visualization and 3D Programming - Geeks3D.com

Wed, 17 Mar 2010 16:11:08 +0000

[...] this news we learnt that Radeons HD 5700 (HD 5770 and HD 5750) have no double precision floating point [...]

By: Athlonite

Athlonite — Tue, 22 Dec 2009 12:50:53 +0000

@ agendaFX you can’t make a rv830 chip out of anything other than an rv850

By: ATI GPUs - Seite 2 - SETI.Germany Forum

ATI GPUs - Seite 2 - SETI.Germany Forum — Mon, 30 Nov 2009 07:10:41 +0000

[...] da draussen, nein, die 5750 und die 5770 haben kein Double Precision! Siehe hier: http://www.geeks3d.com/20091014/rade…point-support/ Vergleiche das hier: http://www.amd.com/us/products/deskt…fications.aspx mit dem: [...]

By: agendaFX

agendaFX — Tue, 27 Oct 2009 09:02:52 +0000

It’s not so surprising at all considering rv740 was rv770 shrinkdown, while this rv840/Juniper is real budget-mainstream card just as rv730 (hd4600 series was). They gone down similiar way when poor old rv530/535 (and later rv630/635) has only 25% of texturing power of their top model.

So after all we get decent performing dx11 hype kind of chip that’s only half of gaming power of their bigger sibling. And good way to AMD to get rid of piled stocks of old chips like rv770, and rv790 especially.

By: HD5770 support Double Precision for Open CL applications - Overclock.net - Overclocking.net

Mon, 26 Oct 2009 22:44:24 +0000

[...] reports that the HD5770 doesn't support Double Precision for Open CL applications. Is this true? http://www.geeks3d.com/20091014/rade…point-support/ Where would this be useful? Is this feature important? Why would the HD5770 not include it when [...]

By: Jesse

Jesse — Thu, 15 Oct 2009 08:41:53 +0000

This is to be expected. Gamers don’t really need double-precision pipeline and I doubt many games will be written requiring double-precision, not even for game physics. Even nVidia has stated that the lower-end Fermi chips won’t have things like double-precision or ECC memory. This is just AMD playing it smart, they made it so that RV800 feature set more scalable so they can better target the different price brackets while maintaining the target margins.

By: SimTex

SimTex — Wed, 14 Oct 2009 20:57:21 +0000

Can hardly be marketing, this must enable them to use chips that otherwise would be defect.

By: FMoreira

FMoreira — Wed, 14 Oct 2009 19:37:49 +0000

to have -> double precision <- in your floating point calculations……

By: D3lta

D3lta — Wed, 14 Oct 2009 16:43:09 +0000

No DP in Opencl. DP for what?

By: _sampah_

_sampah_ — Wed, 14 Oct 2009 14:06:31 +0000

Yeah.. It’s marketing strategy