P4P800 - PAT (Hyperpath) Configuration

[Buy-N-Sell]

I recently read the following article regarding PAT acceleration on the
P4P800 Boards.
http://www.xbitlabs.com/articles/mainboards/display/asus-p4p800.html

According to this article (page 8 in particular), the general notion that
enabling PAT is done by setting the Memory Acceleration Mode in BIOS Setup
(Advanced/Chipset section) to Enabled is incorrect. Apparently the highest
memory performance is achieved when we set Memory Acceleration Mode to Auto
and Performance Mode to Turbo (Performance Mode is under Advanced/JumperFree
Configuration).

They have some scores to demonstrate this. I'd be interested in hearing if
anyone else's best performance comes under this setting as well.

 

[harry wong]

You're better off raising the FSB if you're looking for performance
inhancements than playing around with PAT at a FSB of 200 (eg- a 2.6C at fsb
of 250- PAT disabled- will smoke the same at a FSB of 200 with PAT).

 

[Buy-N-Sell]

Thanks Harry, but I not interested in discussing overclocking as much as
discussing what I actually wrote about in the first place. I realize you
can seriously overclock the C rated P4's by raising the bus speed.

 

[harry wong]

In that case- When I first got the board I was aware of the article and
tried various settings vs Sandra benchmarks. For me, although there did seem
to be a slight improvement (sorry- but my initial benches are long gone) of
less than 5% (this much I do remember) it didn't seem to be statistically
significant. Depending on the RAM however, one may see some improvement as
you are forcing the settings at 2,2,5.

But again I raise my point- why would you want to run a CPU at stock speeds
when you can increase the FSB significantly without any increase in voltage
and without any increase in CPU or MB temp?

 

[jaeger]

@twister01.bloor.is.net.cable.rogers.com>,
(e-mail address removed) says...

They have some scores to demonstrate this. I'd be interested in hearing if
anyone else's best performance comes under this setting as well.

PAT is either on or off. IMO the Best setting is MAM Enabled and
Performance at Standard. Turbo-like settings are best left off, since
you have no idea what it's doing...probably lowering a timing that your
RAM may be able to handle but may not. And look at the scores...half a
frame in RTCW? That isn't significant.

 

[Darkfalz]

I recently read the following article regarding PAT acceleration on the
P4P800 Boards.
http://www.xbitlabs.com/articles/mainboards/display/asus-p4p800.html

According to this article (page 8 in particular), the general notion that
enabling PAT is done by setting the Memory Acceleration Mode in BIOS Setup
(Advanced/Chipset section) to Enabled is incorrect. Apparently the highest
memory performance is achieved when we set Memory Acceleration Mode to Auto
and Performance Mode to Turbo (Performance Mode is under Advanced/JumperFree
Configuration).

Turbo Performance mode crashes for me unless I overclock. Yes, unless I OVER
clock.

Very strange...