Two Lane Highway
The Federal Express agent handed the box over as I initialed my signature. It had taken OWC just three days to ship the RAM for Snow White, who had been hungry for that most basic and cost-effective of upgrades. Random Access Memory.
Highway expansion tools.
The current generation of iMacs are powered the 64-bit Intel Core 2 Duo "Merom" CPU slotted on the Mobile 945GM Express 'Napa' chipset. One of the main features of this chipset is the asynchronous 667MHz bus that addresses all available system RAM as a contiguous array. Apple states that when two pieces of RAM of the same capacity are installed, the interleaving function improves performance.
All that Memory Interleaving Goodness!
Why is this significant? By having the interleaving function enabled, applications that require a lot of memory access will perform faster. However the liability of the "Napa" chipset is that it will only recognize a maximum capacity of 3.3GB of RAM. Apple has taken the high road of limiting it to 3GBs. MacUsers who pursue the option of installing two 2GB matched pairs of RAM will see 4GBs of RAM listed. However, only 3GBs will be accessed by the system, leaving 1GB unused.
The good news is that Intel's up-coming Mobile 965 Express Chipset will give MacUsers the full benefit of the 4GB RAM headroom on their MacBooks, MacBook Pros and iMacs.
posted by Teutoburg @ 6:20 PM
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