Caching IDE RAID controllers

[PowerHungry]

I was wondering if anyone knows if there is much of a difference between a caching IDE RAID controller and a regular IDE RAID controller, performance wise? (Like the Promise FastTrak 100 or thier SuperTrak6000) I would like to upgrade my current POS Highpoint to one of Promises, like the SX6000. I really am looking for a RAID 5 card, and this one happens to cache. Here is my story about my current card http://forums.murc.ws/showthread.php?s=&threadid=29265

I haven't looked at the price yet, but I am sure it is more than I am willing to spend retail.

[CHHAS]

Take a look here

[Dr Mordrid]

For max throughput in a 4 channel card vs. cost you can't beat the Promise Fasttrak TX4.

One master channel per drive, PCI/33 and PCI/66 support, dual ASIC's and it'll run under any Windows OS (not true for many of the other cards mentioned because of their use of i20). The dual ASICS improve performance with arrays with >2 drives.

My results with four IBM 75GXP's (pre-problem builds);

unbuffered sequential writes: >90 mb/s
unbuffered sequential reads: >100 mb/s

both using PCI/33. More than enough throughput for video, or anything else.

Dr. Mordrid