I would not recommend SSDs on a workstation unless you spend the bucks for the high-end SSDs, which blows your "on a very low budget" part. Honestly, Fenril is pretty much right about workstation and super-fast and low budget not being congruent. You can build a high-end "pro-sumer" desktop that qualifies as a lower-end workstation for about $1500-2000, though. Basically, a good motherboard, i7-960 or higher CPU, a good 2GB GTX470+ or Radeon 5870+ GPU, Velociraptor RAID-0 and 24GB of RAM. The GPU is where the trouble will be as the workstation-class cards are freakin expensive due to low volume. The CPUs/RAM are pretty much boilerplate. Disks you can get close on as SCSI isn't as much faster than SATA like it was back in the ATA-33/66 days.