with the 64-bit program, only maximum usage of about 4.2-3 of the 16 GB RAM I have installed, 14+ or so usable.
Even people doing HD video encoding struggle to use more than 10 GB of ram, so I'd say it is normal.
Using a RAMdisk will surely increase the snappyness of your computer if you put temp files (both of system and browsers and applications) there, but hey, number-crunching is CPU-heavy and you won't change that. Stuff in a RAMdisk can be moved to the processor way faster than stuff in a hard drive (hence the increase of snappyness), but the processor is doing something with that, it isn't just looking at them zip by.
You could be right about cooling, stock ones tend to suck and if they suck too much the processor gets too hot under load and then downclocks itself to avoid meltdown (and the performance takes a big
hit when this happens), but the bottom line is that if you really want more performance you need a better processor. I'd frankly leave it as it is, because really, upgrading a processor for Calibri sounds a bit overkill, and even as your motherboard
can support better processors, their price is a bit high. (anyway, CPU benchmark
can help you see the processor's powers)
While it won't help for Calibre, purchasing a decent discrete graphic card to put in your PCIe slot will allow you to run GPU-accelerated programs without a lot of CPU load as they offload the serious number-crunching to the GPU that is a lot
more powerful than any CPU of its times.
3. Can anyone briefly tell me how I can do this? The library is on my C:\ drive and it is backed up on the G:\ drive external. The Calibre program is located, also on my C:\ drive.
You need softwares that create the ramdrive, by "stealing" some RAM from the available and creating a new disk in My Computer, then you transfer the files you want to work with into that, then you work on them like they were from a drive. THis thread
provides links and walkthrough and some comments.
THere are some programs that create dynamic ram drives (that use up ram equivalent to the size of their contents, not a fixed pre-determined amount, but aren't free.