I have built 3 systems for my own use in the last month, varying from current technology to several/many years old. When I spoke of mixed RAID/IDE I was not speaking of a PATA or ATA technology but a SATA drive defined in the BIOS to use/look like IDE. My new/main system is a Windows 7-Ult,Core I7-950,12GB-DDR3,now 2xRAID0-Setsfirstname.lastname@example.orgTB,Quadro4000. I also built a Windows 7-Pro,Core 2 Quad-Q9650,8GB-DDR2,1xRAID0-Setemail@example.comTB,Geforce8800(will be a Quadro2000 when I can afford another video card) and an WinXp-Pro,Pentium 670,2GB-DDR2,2xSATA@650GB,QuadroFx4000 as loner system. The Win-XP system is truely a spare parts box. Someone recently gave me a decent looking case for free so I thru it together. I did buy the QuadroFX and 1xSATA drive the rest I had in parts already. If you wonder why I buy Quadro cards, I do quite a bit of 2D and 3D cad work, modeling and detailing (Autocad/SolidWorks-structural stuff).