My experience has been limited to Gigabyte
motherboards, but here's my take on the two models
I've used that have HPET BIOS settings:
GA-P35C-DS3R 
Very fast, apparently stable, but I've had TWO of
these fail under normal use. The first one stopped
booting, and wouldn't even POST. It failed after 34
days, and was repaired by Gigabyte under warranty.
The second one started acting "weird" after about
three weeks, and would sometimes not recognize the
hard-disks, or access them very slowly. I pulled it,
and I'm not sure what I'm going to do with it.
GA-P35-DS4
Also very fast, and rock-solid stable. I bought one of
these to build a new gaming rig for my son, and he
hammers it mercilessly! It's performed flawlessly for
several months now. After the second GA-P35C-DS3R
started acting up in my Linux workstation, I replaced
it with one of these, and it's been running solid for
two months now.
Both my Linux machine and my son's Windows machine are
almost identical. Running a 3GHz Core 2 Duo E6850, 4GB
of G.SKILL memory, EVGA 8800GT PCI-E video cards, and
500GB Seagate SATA drives. The cases are Lian Li, and
both have a 750 Watt PC Power and Cooling supply.
I'd recommend the DS4 motherboard in a heartbeat, and
also tell you to stay away from the DS3R equally fast!
Hope this helps.
73, Jim  KQ6EA
--- Steve Kallal <[EMAIL PROTECTED]> wrote:

> Let me restate my earlier HPET question. Hopefully I
> will be a little
> clearer this time.
>  
> I want to use the High Res option in the Keyer setup
> screen. There are some
> dual core motherboards out there with Intel chipsets
> that DON'T have a BIOS
> option to enable or disable HPET. I do need to
> restrict my purchase to a
> motherboard with an actual HPET option to enjoy the
> benefits of the High Res
> option.
>  
> Tim W4TME privately sent me a link to utility that
> checks the actually
> checks timers. The link eventually took me to
>
http://www.grahamwideman.com/gw/tech/dataacq/skedgran/skedgran.htm.
> I don't
> know how to interpret the tool, or if the tool
> really tells me if the High
> Res option will work on my system.
>  
> I am ready to buy a new dual core system and want
> some accurate info to help
> me in my desicion.
>  
> 73,
> 
> Steve N6VL
>  
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