Jean-Luc,
I have exactly the same problem as you with my HD6850 card. Although having
1GB of RAM, for opencl only 512MB is available. This is an hardware/driver
issue. As Ulrich pointed me out several months ago, it seems to be an issue
of HD77xx and lower cards. If you will go for higher one, you should be
fine. But try to find more information to be sure. One possible source is
here:
http://devgurus.amd.com/thread/158397
Usermanual seems to be a bit obsolete regarding this topic.
Suni
2013/6/10 Jean-Luc Coulon <[email protected]>
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>
>
> Hi,
>
> I have a computer with an Athlon II 245 and 4Gb RAM.
> The video is an integrated attachment with a Radeon 4200.
>
> It just works but a bit long in reprocessing the pixelpipe.
> I plan to upgrade the computer but, for the moment, I would like to add
> a decent video card.
>
> But I'm a bit puzzled...
>
> In this thread:
> https://sourceforge.net/mailarchive/message.php?msg_id=30631920
>
> Ulrich said:
> >At the same time ATI's recent HD77xx or HD79xx are really fast in
> >computing.
>
> We can read somewhere that 1Gb+ or better is the choice.
>
> But, in the usermanual, it is told that ATI reports only 512Mb.
>
> Does this means than having more than 512Mb is useless on ATI?
> Or is it a difference between "reports" and "uses"?
> What is the more important: the GPU power or the internal RAM?
>
> Regards
>
> Jean-Luc
>
>
>
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