Intel PAT

[Zucarita9000]

According to Intel, enabling PAT on i865PE chipsets (undocumented feature?) is not recommended nor aprooved by them. However, Asus motherboards, such as the P4P800 series, do have some sort of PAT feature.

I'd like to know if it's the same as Intel's PAT or is it some propietary version and if it is safe to enable (Turbo mode).

I have a few PCs using P4P800-series motherboards, all with Kingston ValueRAM memory (PC3200 400MHz C3).

I've enabled it in one system, and it seems to be stable. Sandra's memory benchmark went from 4120 MB/s to 4740 MB/s.

 

[Navid]

There is a lot of data published on this, which you can find by doing a Google search.
This is one example.
http://www17.tomshardware.com/motherboard/20030603/index.html

Edit:
If you overclock, PAT is automatically disabled. But, there is a BIOS hack that allows you to keep it active even when overclocked.

 

[Zucarita9000]

Oh, I see. So Asus's Hyper-Path is actually Intel's PAT with a different name. Thanks.

 

[The Pentium Guy]

What exactly IS turbo mode? I have a P4P800-e Deluxe and I'm not too sure what Turbo Mode is. I'm wondering if it just keeps overclocking it ?

 

[Navid]

Originally posted by: The Pentium Guy
What exactly IS turbo mode? I have a P4P800-e Deluxe and I'm not too sure what Turbo Mode is. I'm wondering if it just keeps overclocking it ?

It sets aggressive memory timings I believe. You are better off setting the memory timings carefully yourself instead of using the turbo mode.

 

[Zucarita9000]

Originally posted by: The Pentium Guy
What exactly IS turbo mode? I have a P4P800-e Deluxe and I'm not too sure what Turbo Mode is. I'm wondering if it just keeps overclocking it ?

I made a mistake, the Turbo setting in the P4P800 motherboards has nothing to do with PAT, just some sort of light overclocking or something along those lines.

Intel PAT (or Hyper-Path) has to be enabled under Advanced > Chipset > Enable Memory Acceleration Mode. There is a small performance improvement. Sandra benchmarks are higher (from 4200 MB/s to 4900 MB/s in my case).