Info
about the original downloadable windows program is below:
What is it?
Quantispeed Calculator is a little program to help you work out
AMD’s theoretical “XP” or “Quantispeed”
(hereon referred to as QS) value in actual megahertz. As well
the other way round, converting a tangible megahertz value into
the corresponding “QS” value.
Why did I make
it?
My KK266 combined with my very poorly unlocked Athlon XP sometimes
generates its own seemingly random multiplier instead of the one
that I give it in the bios overclocking menu. This made for some
unusual guess work to find out what my actual multiplier is and
what its actual frequency because it reports a “QS”
value on post.
That combined with a curiosity
for what QS really is and laziness to actually wait for my computer
to get into windows and run WCPUID.
How was it made?
The program itself was programmed in Vb by a good friend of mine,
I gave him a quick outline of what I wanted, the input, process
(formula described below) and output I wanted. Gave him 10 minutes
and Beta1 was complete. If you are interested in any more specifics
or suggestions on the programming side of things you can contact
him at SHellcar@optushome.com.au
What is the actual
“QS” “formula”?
This was the hardest part of the whole process, but from my far
from exhaustive testing I think it is as good as, if not the same
formula that AMD uses.
I first assumed that it was going
to be a linear relationship and using the 2 points that I knew,
1600+ = 1400 & 1800+ = 1533, I plotted the points on an XY
graph with XP value on the Y axis and Actual Value on the X axis.
Drawing a straight line (yes just like in year 6) I then found
the X intercept, this was 500 and my c value in my y=mx+c formula
that would end up (in theory) the “QS” formula.
The next part was my m or gradient
value, this was done with a simple rise over run or 200/133 which
= 1.5 This left me with the formula f(x)=1.5x-500 where f(x) is
equal to the QS value and x is actual megahertz value. This of
cause worked with the 2 values that I used in my plotting and
further plugging of known QS values into the formula also rang
true.
1600+=1.5x -500
2100= 1.5x
1400=x
2000+=1.5x -500
2500=1.5x
1666=x
The equation can also be transposed
to find the QS value from an actual megahertz value.
How do I use it?
It's dead simple to use, simply enter in either the XP rating
or QS value into the left hand box OR the MHz value into the right
hand box and it will calculate the corresponding value in real-time.
Then simply fill an envelope with money and send it to us.
If the program
is so damn simple, why is it 40 precious KBs?
We thought we could indulge in the about page, a cut down 18KB
version is available upon request for the truly bandwidth tight,
but the email you have to send will probably negate any download
saving.
I am itching to
give my suggesting and take up room on the about page!
Sure, if you have a cool addition to the program email it along
to Avidin@groovekitten.com
and if it gets included in 1.1 you score your very own line in
the about page as well as fame and glory. If just want to say
G’day or say thanks you can also send it to the above address,
you don’t get a line in the about page though.
Any trademarks mentioned in here
are the property of their owners (probably AMD). Note that this
is simply an educated guess at the formula required and we make
no guarantee that it will be accurate in all situations. Finally
I would just like to thank Agg and OCAU for the exposure and hospitality.
Update:
Some users using Win98se have reported issues with a dll file
not being found. Simply place this VB file
into your C:\windows\System folder and it should fix the problem.
If it doesn’t, please mail me with any error messages outputted.
Thank you to Maelstrom who helped me resolve the issue.
Sabretooth notes that you may
need to register the DLL. Go Start->Run, then command.exe. In the DOS box that appears, enter:
c:
cd \windows\system32
regsvr32 MSSTDFMT.DLL
exit
All content copyright 1999-2002 James Rolfe.
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