Quote:
Originally Posted by sclitheroe
This is very incorrect. SC2 as a 32 bit application is limited to < 3 gigs of RAM (not 4 GB as others incorrectly state), but running it on a 64 bit system means all that other RAM gets used for superfetch, disk caching, etc. So while SC2 itself has no additional resources running on a 64 bit system, all of the supporting OS resources around it are beefed up.
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I think you misunderstood, I think the general statement was that a 32bit system can only recognize 4gb of memory. You're right that a 32bit application will only utilize 2gb of memory, the rest is set aside for system processes.
That being said, my point remains, 32bit applications in a 64bit environment will not utilize what you have. I have 6gb of ram on a 64bit system, when running SC2 under heavy load the highest my memory usage has every gone is 3.6gb. With 2gb being used by SC2 and 1.6 used by the rest of the system. I could achieve this performance with a 32bit system, whereas if SC2 was a 64bit application the performance would be much higher.