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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > Pre-Santa Rosa MacBook question

Pre-Santa Rosa MacBook question
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Mac Enthusiast
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Nov 18, 2007, 07:24 PM
 
I know that the pre-Santa Rosa MacBooks could only address 3GB of RAM even if 4GB were installed. But, what about the video memory? Is the video memory taken from within the 3GB limit or from the 4GB that's actually in the machine?

Thanks.
Mac Pro 2.8x8 - 32GB - EVGA GTX285 - Apple Remote - Dell 3007WFP-HC
MacBook 2GHz - C2D - 4GB - GMA X3100
Mac mini 2.33GHz C2D - 4GB - GMA950 - 2 Drobos - SS4200 (unRAID)
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Posting Junkie
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Nov 18, 2007, 09:20 PM
 
The chipset can address ~3.1GB and OS X gives 3GB to the user, so I think the VRAM comes out of the difference, but I can't confirm it.
     
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Nov 19, 2007, 10:54 AM
 
@Mod: Move to MacBook/iBook forum.
     
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Nov 19, 2007, 11:09 AM
 
Ooops. Sorry. Posted in the wrong section...
Mac Pro 2.8x8 - 32GB - EVGA GTX285 - Apple Remote - Dell 3007WFP-HC
MacBook 2GHz - C2D - 4GB - GMA X3100
Mac mini 2.33GHz C2D - 4GB - GMA950 - 2 Drobos - SS4200 (unRAID)
iPhone 4 + iPhone 3G S⃣
     
Posting Junkie
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Nov 19, 2007, 12:28 PM
 
The 945GM chipset documentation probably answers your question, but I don't totally understand it. Either way, what's 80MB out of 3GB?
     
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Nov 19, 2007, 06:04 PM
 
Thanks, mduell!
Mac Pro 2.8x8 - 32GB - EVGA GTX285 - Apple Remote - Dell 3007WFP-HC
MacBook 2GHz - C2D - 4GB - GMA X3100
Mac mini 2.33GHz C2D - 4GB - GMA950 - 2 Drobos - SS4200 (unRAID)
iPhone 4 + iPhone 3G S⃣
     
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Nov 19, 2007, 06:12 PM
 
Moved.
Glenn -----
OTR/L, MOT, Tx
     
   
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