AndyC, I am not savvy in Windows internals, in how it caches and manages file O/I. I came across this old article mentioning an anecdotal evidence of how people were able to significantly increase their Photoshop productivity with ramdisk http://www.pcworld.idg.com.au/article/73385/boost_performance_win_xp_pro_ramdisk/
Can you please elaborate on your point why "it won't ever be faster"? Please explain how is HDD I/O not holding up applications under no circumstances in WinXP for instance? I understand there is RAM caching of all file I/O in any modern OS, but is there no such use case when ramdisk really helps? I'm just confused by categorical "it won't ever be faster" and the article I referred to above.
Anyone who understands subject matter please share your knowledge.