Just wanted to share my experience utilizing ramdisk software to play runescape. It works really freaking awesome . The worst zoning/lag spikes are dropped to the barest of moments. GE is a sliver from instant on the worst server and everything else is perfectly smooth now. Turn up max settings and enjoy
Requirements:
1.) NTFS formatted C:\ drive, so basically Vista or higher Operating System
2.) 850MB or more unutilized RAM when your PC is under regular RS gaming load.
3.) Ramdisk software
4.) Runescape desktop client installed
Make a ~850MB Ramdisk drive named A for example and format NTFS. Not many people will have floppy drive conflicts I hope The file that will be copied over is about 800MB but there needs to be some headroom for the NTFS formatting you need to do on the drive. If there isn't 800MB left to the drive after formatting then you need to allocate a little more memory.
Cut and paste your jagexcache folder to drive A. If you have windows Vista/7/8 then you'll find it in your C:\Users\YOURaccountNAMEhere\jagexcache Just cut and paste that over to A:\
Now you need to make a junction point of the folder back onto your C:\ drive in your C:\Users\YOURaccountNAMEhere\ folder. So just press WindowsKey+s and type CMD into the search bar that pops up. Right click the Command Prompt.exe and run as Admin. After your command prompt opens you have to use the mklink.exe to make the junction point. There are several other options to get this done so google if you want but I think you should just use the following mklink command.
> mklink /j "C:\users\YOURaccountNAMEhere\jagexcache" "A:\jagexcache"
so in the above command: the first windows directory address creates a jagexcache folder that links to the folder jagexcache on drive A.
Now that all that is done all you have to do is use the shortcut that the installation of the Runescape Windows Client put on your desktop. You have to run Runescape from the shortcut, nothing has changed here. It gets confusing if I have to explain how to make your own shortcut in case the default one is deleted. Just google how to add launch options to a shortcut and add runescape as a launch option to the new shortcut you make yourself. jagexcache\jagexlauncher\bin\jagexlauncher.exe is the file you want to make a shortcut out of
Wish you all the best, this is totally worth the effort if you play runescape a lot!
EXTRA:
You could just throw jagexcache\runescape\LIVE folder onto a ramdisk for basically the same performance but it only cuts 80MB from the requirements.