Re: AMD 890GX vs 6Gbps SATA?

[Stan Hoeppner <stan@hardwarefreak.com>]

Huang, Shane put forth on 11/16/2010 4:04 AM:

> Since your CAP.ISS is set to 0010(3Gbps), most likely you'll
> have to ask your BIOS vendor to enable 6Gbps in one release.
> Some BIOS vendors may set the max speed to Gen2 to save power.

Unless you have a PMP on the other end of that SATA link with a bunch of
striped drives, or an expensive SSD, you won't notice a performance
difference between 3 Gb/s and 6 Gb/s link speed anyway:  no single mech
drive on the planet can come close to pushing 300 MB/s let alone 600.
The fastest 15k SAS drives are peaking at around 200 MB/s IIRC.  And
there are few [affordable] SSDs that will saturate a SATA II link, let
alone a SATA III link.

My advice, FWIW, is to simply ignore this, unless you plan on attaching
a device in the near future that can actually exceed 300 MB/s.
Currently the only way to do this is with striped mech drives on a PMP,
or with a $500+ SSD.

-- 
Stan