   RAID 5 Controller suggestions
  I'm currently in the process of building a new computer but haven't been able to decide on a RAID5 Controller for my data drives.  My motherboard can do it but I don't want the CPU getting used for the parity/XOR tasks.My current requirements for the controllerPCI or PCI-Express (1x, 4x, 8x)Handle 4 SATA drives (250GB each in my case)Dedicated onboard RAM and CPU for any calculations (native RAID5, not CPU/software)Hopefully less than $300 USI am currently looking at the following controllersPromise Fasttrak S150 SX4, Cache memory not included :|HighPoint RocketRAID 1810A, not sure about this oneI've also looked at Adaptec but didn't find a controller that I liked (in my price range).I haven't seen any reviews on RAID Controllers, so any help/suggestions greatly appreciated.Thanks in advance   
  We (the ISP I work for) use nothing but 3ware (8000 series) Raid controllers. Mainly due to their great linux support.   ;  note the HighPoint controller you linked to is PCI-X, not PCI-Express. [oh]   ;  Hmm, yeah the HighPoint one is PCI-X (their 8 port one could do both) so that's out.I'm currently deciding on the followingPromise FastTrak SX4100Promise FastTrak S150 SX4-M (M model includes memory)Besides the 4100 being a smaller controller and supporting upto 1.6TB of space, I don't know if there are any other differences.  Haven't been able to find a review of the 4100 and the Promise site doesn't even list it under their product guide.I'll have a look at the 3ware controllers but I don't need Linux support at the moment.