Replace hd4850 with hd6850

Goomba said:

Hello,

I want to upgrade my hd4850 512mb with a hd6850 1gb. Because i'm always using 2 monitors now, and I also want to connect it to my tv to run xbmc on over there and I don't want to switch the cable over and over again.

But to the case, i've got a running hackintosh on 10.7.4, for getting the hd4850 i've installed the kexts via multibeast. Will I have problems replacing the card? They say the hd6850 works OOB. Or do I have to make a clean install, or just delete those kexts?

Maybe this question is stupid, but I couldn't find any guides on replacing video cards.

Thanks in advance,

Goomba

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reichleyusaf said:

6850 will work OOB but requires small tweak to chameleon.boot.plist. You will have to add a few ATI strings...

<key>AtiConfig</key>
<string>Bulrushes</string>
<key>AtiPorts</key>
<string>4</string>
<key>Darkwake</key>
<string>0</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>Kernel Flags</key>
<string>arch=x86_64 npci=0x3000</string>

And make sure the Darkwake, GE, and Kernel flags are set to the values above.

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MacMan said:

The only time you would have to edit the boot.plist if you have an unsupported card, otherwise the 6850 works OOB in Lion.

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gotosleep said:

MacMan said:

The only time you would have to edit the boot.plist if you have an unsupported card, otherwise the 6850 works OOB in Lion.

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What if it's not working correctly? I've got no HDMI video, a horizontal line that scrolls up or down the screen and a low xbench OpenGL score.

Should I do the above edit?

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