Don't know why people think it's crazy. You can get 16 GB for like $100.
Get a 8 slot X79 with 64 GB, build a 48GB RAM drive, and write a startup script that loads all your most heavily used games and applications to the 48 GB on boot from a 2+ GB/sec SSD RAID-0 and symlink things like the config files and save dirs to actually write back to the SSDs.
You could use sleep mode 99% of the time and keep RAM alive in combination with a UPS, and worst case scenario if you lose power you only have a 20 second boot time including streaming compressed image data from the SSD RAID to the RAM drive at 2+GB/s. Would be totally worth it. I'm spoiled by SSDs, I need faster now. Primary storage latency must die in a nuclear holocaust if we truly want to see the greatest revolution in the computer since the invention of the microprocessor. We need this BAD. We can't keep upgrading to 900 GB/sec processors and memory buses and quadrupling our file sizes and data quantity every year and still moving GBs and TBs of files at 2,500 Kilobytes / sec random access speeds like it's the 1960s.
Yeah. I'm done with shitty spinning magnetic "tape" garbage. Anything with read/write heads belongs in the garbage next to the floppy disk and VHS tape, not in a modern PC circa 2011. Memory gap is too wide now. People didn't stop and think advancing computers exponentially for the last 50 years "hey how are we going to store and retrieve the data for this new 2345897349857349 TFlop CPU to access??"
1:1 CPU

rimary storage is where it's at.
Yeah... there you go, perfect use for excessive amounts of RAM. I want such a truly zero wait state computing experience that the hourglass and progress bar APIs can be safely removed from the OS forever. Like those computers you see in sci fi movies that never have load times for anything and move exabytes of data in the push of a button. Full virus scans that take all of 3 seconds to check 20 million files, etc.
This is the next best thing until a true universal memory like STT-MRAM or FRAM takes off. Imagine 256GB of non volatile RAM that is both your "RAM" and "storage device" at the same time, that's as fast as SRAM, infinite rewrites, doesn't require power to retain data forever, instant on/off, no loading ever because everything is already just... there... directly addressable by the CPU at all times. "loading" would become synonymous with "installing" where you upload the program and data from external media to "RAM" one time. Screw the ball and chain of hard drives.
Until then, there is 64 GB of RAM backed by generous quantities of RAIDed NAND flash SSDs.