SATA2 RAID controller Help!

[Jayos]

I currently have an Asus P5B Premium mobo.
This has a built in RAID controller. But I don't think it's SATA2 so my 2 Hdd's that are RAID 1 are only performing at standard SATA rates.

I also have 2 SATA2 Hdd's how much will performance increase if I were to use a dedicated SATA2 RAID controller (I am not looking at changing the RAID config.)

I am looking to spend approx £200 which should get me a 4 port card

 

[BillytheImpaler]

The P5B runs ICH8R which provides SATA2 RAID functionality/ You probably need to enable SATA2 operation on the drives by moving a jumper or some'at.

It won't make much of a difference anyway since no disk even comes close to exceeding SATA1 speeds in sustained transfer. The only thing effected would be burst speed.