I don't really see the point of a ramdisk now that we have modern OS's with buffer cache. Get lots of system RAM, enable deep delayed writes, and pre-load your cache, and bingo you've got all the speed of a RAM disk without any of the hassle. More speed even... system RAM is faster than video RAM because of the PCIe bottleneck. It works automatically, so why pre-allocate cache manually and do a worse job than the system already does?
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