I've been using RamDisk for just under a year now on a fairly decent desktop:
i5 2500k
8GB DDR3 1600 (16GB Now)
GTX 560ti
240 GB Crucial M500 SSD
1TB Samsung Spinpoint F3 HDD
I previously kept my client on the Crucial M500, but I still had the camera flipping issue, which is supposedly caused by others zoning into your current zone. If you're a bard trying to level up via swarm kiting, that's game breaking. I guess for a wizards and druids trying to quad it could be a pita too. Other than that, it's just super annoying, especially when it makes you double zone. Anyhow, RamDisk fixes that. As for zoning in general, a lot of the time it's instant for me, but there are still several occasions where it takes 10s or more to zone. RamDisk isn't going to completely eliminate zone times, it's going to reduce or eliminate your HDD/SSD as a factor in zone times.
If you want to try it out, and have a 64bit system with 6-8GB, you should be fine, but I wouldn't recommend it on a system with less. Just be wary of how much ram space you're actively/normally using, which you can view via the windows resource monitor. You only need an approximately 2GB RamDisk for P99, so if you observe plenty of headroom, go for it.
To get your P99 EQ Client under 2GB, you just have to create an EQLite version, which will remove anything past Velious, and still leave you room to run the higher res textures. You can find the EQLite instructions here:
https://www.project1999.com/forums/s...ead.php?t=7186
For the RamDisk software, I like Softperfect Ramdisk, which I've linked below. I previously used DataRam's free version, but the new versions limit it to 1GB. Softperfect actually benchmarks significantly higher, it's free, and it comes with no size or feature limitations. The downside is that it's a little more complicated to setup your disk. You have to create the 2048MB NTFS image first, and then add the 2048MB disk that uses it.
https://www.softperfect.com/products/ramdisk/
Here is somewhat of a tutorial on setting up the Softperfect RamDisk. You can also view their online manual from the link above as well.
https://www.youtube.com/watch?v=R_R2uyuqVxw