Some people have used extra memory to set up RAM Disk. The thread also explains some of the mechaincs of why load times are bad.
Yes, Bioware's idiotic "read from disk, write back to disk, read from freshly-written disk" scheme will do horrible things to performance. I think somebody on the dev team has been working with cell phone and console apps for too long. Everybody should investigate that thread.
One more thing, if you are not using a 64 bit OS then you cannot use the 8GB of memory. The most a 32 bit OS can address is about 4GB.
If they have a processor with PAE
, then the OS can see beyond that limit even tho individual processes can only see a couple gigs at a time. The extra space can be used for -- say -- the ramdisk mentioned in the first part of your post.