While this kind of trade-off sounds inevitable, the latest ImDisk Toolkit shows it doesn’t have to be that way. New dynamic memory management support means that RAM disks will only consume the memory they actually need. If you’ve a 512MB RAM disk with 10MB of files, say, then memory consumption will be only a fraction above 10MB: the remaining 500MB will be available for other applications.
There’s a down side to this flexibility, of course. If memory is being freed up to give back to the system, then it must also be reallocated as necessary later, perhaps with some performance impact (especially if other RAM is sent to the paging file)
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