[Pc_Support] Re: Fastest Hard Drive Access for Large (Video) Files

[Bryan J. Smith]

On Tue, 2005-08-02 at 08:08 -0500, David Simmons wrote:
> googling and reading sites like Anandtech had alot of the info I was
> looking for...basically 300 MB/sec bursts

But the drives are no where near capable of that.  They are all under
80MBps these days.  So a SATA-150 can handle it easily.

Also note that 300MBps SATA is now known as SATA-IO or SATA-300, and
_no_longer_ SATA-II.  Just like USB 2.0, it's become a marketing gimmick
and doesn't necessarily mean that performance.

> Ok...so given that my motherboard already has a SATA connection...and
> (hopefully) it's on some kinda 'dedicated' or internal bus...

Many chipsets use one (1) PCIe channel with a dedicated, bi-directional
250MBps bus for the 2-4 SATA channels.

> then this seems to be the best cost/performance contender? (thanks
> Damien / Bryan)

_If_ you need lots of random seek.  If it is just raw, linear throughput
with sequential reads, then sometimes density is better.  It all
depends.


-- 
Bryan J. Smith   b.j.smith at ieee.org   http://thebs413.blogspot.com
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