A7N8X-X : S2K Bus Disconnect?

  • Thread starter Thread starter Alain
  • Start date Start date
Alain,
I've read through your link and it appears there would be a substantial
reduction of heat dissipation with the S2 feature enabled. It mentions only
5 mobos that have it enabled at that time a few months ago so things should
be looking up with newer board revs. My rev1.04 does not support it but I am
not sure if a bios upgrade in the future would enable the feature or if it
needs mobo support.

David
 
David

Thanks

Alain,
I've read through your link and it appears there would be a substantial
reduction of heat dissipation with the S2 feature enabled. It mentions only
5 mobos that have it enabled at that time a few months ago so things should
be looking up with newer board revs. My rev1.04 does not support it but I am
not sure if a bios upgrade in the future would enable the feature or if it
needs mobo support.
Click to expand...

I was hoping there where already more asus mobo supported it. Strange
that it's not even mentioned on the ASUS A7V8X mobo page, which should
support it. This is significant to make a quieter pc...


Alain
 
Alain,

I have the A7N8X Deluxe Ver.2, and I was able to enable S2 using
WPCRSET. It is not enabled in the BIOS by default but by using
WPCRSET, it will automatically change the register to enable S2 every
time Windows starts.

Enabling the S2 dropped my idle temps by about 8C, an impressive
reduction. My Barton 2500, overclocked to 205 x 10.5, idles at about
33C and rarely gets over about 37C in normal use.

I'm out of the country for the next couple of weeks so I don't have
access to my machine to be able to tell you which register needs to be
changed and the proper value, but you should be able to do a Net
search and find info on it. The only caveat is that the A7N8X-X has a
slightly different BIOS than the A7N8X-D and the register location may
be different.

Good luck,

Doug
 
Alain,

I have the A7N8X Deluxe Ver.2, and I was able to enable S2 using
WPCRSET. It is not enabled in the BIOS by default but by using
WPCRSET, it will automatically change the register to enable S2 every
time Windows starts.

Enabling the S2 dropped my idle temps by about 8C, an impressive
reduction. My Barton 2500, overclocked to 205 x 10.5, idles at about
33C and rarely gets over about 37C in normal use.

I'm out of the country for the next couple of weeks so I don't have
access to my machine to be able to tell you which register needs to be
changed and the proper value, but you should be able to do a Net
search and find info on it. The only caveat is that the A7N8X-X has a
slightly different BIOS than the A7N8X-D and the register location may
be different.

Good luck,

Doug
Click to expand...


In WPCREDIT set offset "6F" from its default value to "1F".

Cheers,
Ed
--
btw, I made a little program that loads WPCREDIT makes the changes and
then closes it. I guess using WPCwrite(spelling?) would do the same or
better, I just didn't want to install it. ;p

' Visual Basic Code for WPCREDIT 6F setter by Ed Wilk.
'
Sub Main()
' Using basic built in Sendkeys commands.
DoEvents 'Start your engines!
x = Shell("WPCREDIT.EXE", vbNormalFocus)

Start! = Timer
Do Until (Timer - Start!) Mod 86400 > 30 ' 30 second max wait!
DoEvents
H = FindWindow(vbEmpty, "WPCREDIT for WIN32")
If H <> 0 Then Exit Do ' Found it!...Exit Do Loop...
Loop

On Error GoTo NotFnd
DoEvents
AppActivate ("WPCREDIT for WIN32"), False
DoEvents ' OK All systems GO!
' ***************************************************
' SEND REQUIRED KEYSTROKES TO CHANGE OFFSET 6F to 1F
' ***************************************************
For x = 1 To 15
SendKeys "{RIGHT}", True ' right arrow
DoEvents
Next x

AppActivate ("WPCREDIT for WIN32"), False
For x = 1 To 6
SendKeys "{DOWN}", True ' DOWN arrow
DoEvents
Next x

AppActivate ("WPCREDIT for WIN32"), False
SendKeys "{ENTER}", True
SendKeys "{UP}", True
SendKeys "{LEFT}", True
SendKeys "1", True
SendKeys "{ENTER}", True
DoEvents
AppActivate ("WPCREDIT for WIN32"), False
SendKeys "{ENTER}", True

Start! = Timer
Do Until (Timer - Start!) Mod 86400 > 1 ' 1 second max wait!
DoEvents
Loop

AppActivate ("WPCREDIT for WIN32"), False
SendKeys "%{F4}", True ' CLOSE IT

AllDone:
Exit Sub 'Elapsed CODE time on A7N8X Barton @2.3GHz, 0.171 seconds.

NotFnd:
MsgBox Error$
Resume AllDone

End Sub
 
Hi Ed

In WPCREDIT set offset "6F" from its default value to "1F".
Click to expand...

Is this with a A7N8X-X or a A7N8X Deluxe Ver.2 ?? The -X version has a
nice price and I don't need the dual-channel "speed-enhancement".

Thanks for the info.


Alain
 
Hi Ed



Is this with a A7N8X-X or a A7N8X Deluxe Ver.2 ?? The -X version has a
nice price and I don't need the dual-channel "speed-enhancement".

Thanks for the info.


Alain
Click to expand...

I did a quick search on Asus FAQ page and all I got back was this....
Q: Do you know whether a7n8x support "S2K bus disconnect" feature?
A: Only A7N8X R2.00 (C18D)?has "S2K disconnect." support.

I first read about it in one of the nforce forums, seems to be working
on the Abit nF2 boards as well.

btw, I have the A7N8X v2.00 Standard (No "-X" or "Deluxe" stuff), and it
works real nice, 110% stable with S2K enabled or not.

Cheers,
Ed
 
Alain,

As I said at the beginning of my message, I have the A7N8X Deluxe Rev.
2 board, not the A7N8X-X. For the A7N8X Deluxe, you need to change
register location 6F from it's default value (sorry, don't remember
what it was) to 1F.

Here's what I would recommend. Start Windows and use WPCREDIT to
change the default value of register 6F to the new value of 1F. Then
using Mother Board Monitor or Asus Probe, see if your idle temperature
drops. If it does, then you can use WPCRSET to make the change
permanent.

If it didn't work or locks up your machine because the register
location or value are different on the A7N8X-X, then simply reboot and
the value will return to the default value again. WPCREDIT allows you
to change values but they return to the default when you reboot (great
for testing) while WPCRSET loads the new values every time Windows
starts (great for making the change "permanent".)

Good luck,

Doug
 
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