"100Mhz Assumed" Message at Bootup

[Guest]

Message upon bootup says "Serial Presence Detect (SPD) device data missing or
inconclusive. Properly programmed SPD device data is required for reliable
operation. 100Mhz assumed." I haven't noticed anything out of the ordinary
after bootup when I'm working in Windows, but the bootup process takes a
rather long time. Does this message mean that my system is only running at
100Mhz instead of the 600Mhz that it is capable of? What can I do to correct
this message?

 

[Richard Urban]

It means that your front side bus is running at 100 mhz, instead of the 133
mhz that it is supposed to be running at. This will slow down the computer
measurably.

--


Regards,

Richard Urban
Microsoft MVP Windows Shell/User

Quote from George Ankner:
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!

 

[Richard Urban]

Sorry!

To correct the problem, you have to find out what the specs of your CPU are.
What is it "supposed" to run at. Then you have to go into the computer bios
(read your manual), find the page where you can adjust this, and make the
adjustment. Then save and exit the bios.

Don't change anything that you are not certain about. You can turn your
computer into a large paper weight in a blink.

--


Regards,

Richard Urban
Microsoft MVP Windows Shell/User

Quote from George Ankner:
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!

 

[Jonny]

Go find Everest on the internet. It will tell what your RAM is in terms of
maximum memory bus capability, what the SPD capabilities are, and what your
actual memory bus speed is.

 

[Guest]

Jonny&Rich - Thanks for the response. First, Everest is discontinued; but I
chose and ran WinAudit to try to learn the info you suggested. Second-The
WinAudit report did not provide the 'maximum memory bus capability, nor the
SPD capabilities. But it did show me that the Memory Device 'speed' for each
of the three 128MB modules that I have in my system is 0Mhz. (Is this
'speed' referring to 'bus speed'?) I looked at every page of the audit
report and didn't see any reference to 'bus speed'. Shall I try another
audit report to attempt to get bus speed data? Thanks for your help.

 

[Jonny]

Its discontinued, but still available for download. Please do as I said.

 

[Guest]

Thank you. Even though Everest Home is discontinued, I was able to download
and run the program. Results show: Under Memory Bus Properties - Real Clock
100Mhz, Effective Clock 100 Mhz. <Does this identify the maximum memory bus
capability?> (Note: Front Side Bus Properties display the same.) Under
SPD:Memory Module Properties for DIMM 1 - Memory Speed PC100 (100Mhz) Under
SPD:Memory Module Properties for DIMM 2 - Memory Speed PC100 (100Mhz), but
SPD:Memory Module Properties for DIMM 3 - Memory Speed PC66 (66Mhz) <This is
the actual mem bus speed, right?> Not sure where to find SPD "capabilities".
Does this help? I did save the audit report. Thanks for your time.

 

[Jonny]

Your memory bus is running at 100 MHz. The SPD has only 2 capabilities for
bus speed. The highest normally used speed of the memory module design is
from checking the RAM module itself which should contain its specs for
memory speed and latency etc. in x-x-x-x format.

 

[Nick Goetz]

Thank you. Even though Everest Home is discontinued, I was able
to download and run the program. Results show: Under Memory Bus
Properties - Real Clock 100Mhz, Effective Clock 100 Mhz. <Does
this identify the maximum memory bus capability?> (Note: Front
Side Bus Properties display the same.) Under SPD:Memory Module
Properties for DIMM 1 - Memory Speed PC100 (100Mhz) Under
SPD:Memory Module Properties for DIMM 2 - Memory Speed PC100
(100Mhz), but SPD:Memory Module Properties for DIMM 3 - Memory
Speed PC66 (66Mhz) <This is the actual mem bus speed, right?>
Not sure where to find SPD "capabilities". Does this help? I
did save the audit report. Thanks for your time.

Looks like you have SDIMMs (RAM) with mixed speeds (2 at 100 and 1
at 66).

As you computers boots thru POST it checks for SPD information
physically located on a small chip on the SDIMMs and will set the
memory timings and speed accordingly. If that information is
inconclusive or not available, it seems to make an "educated
guess".

If you're not having problems, don't worry about it. Most SDIMMs
are conservatively rated and can be "overclocked". If you are
having problems, replace the SDIMM rated to run at 66Mhz with one
rated at 100Mhz.

Normally you'd try to place the slowest SDIMM into the Number One
slot. The system will usually set the RAM timings to the lowest
detected.

NG

 

[Plato]

Go find Everest on the internet. It will tell what your RAM is in terms of

http://www.lavalys.com/products.php?lang=en

 

[Guest]

Thank you. That makes sense. I think it may be time to upgrade my total RAM,
and in doing so do away with this conflict. I've checked RAM pricing and it
would be a good investment, I think.
One last question - the first system audit (WinAudit) stated under the
'Memory Controller' section that the "Max. Memory Module = 256MB". I
understand this to mean that any of the three memory slots can support a
256MB memory module. Is this a correct understanding?
Thank you all so much for your time and attention to my problem.