There are good news for SSD RAID0 users with an old Intel chipset.
It was again Dufus (aka CPL0), who has recently detected a new, simple and safe modification of Intel RAID ROM modules, which definitively enables the TRIM in RAID0 support for Intel 4-Series Chipset SATA RAID Controllers and maybe even for Intel P35 Chipset systems.
For further details you may look into
>this< thread.
Any feedback from SSD RAID0 users with an Intel 3-Series or 4-Series Chipset, who are trying to get TRIM in RAID0 support this way, is much appreciated.