daviddschool wrote:
> Ok. I do have the BLACK EDITION 65W Brisbane, but finding out which
> one is problematic for me (revision G, G2?). I used AIDA32 , but it
> doesn't tell me the make of it in detail like you listed here :
>
> http://support.asus.com/cpusupport/c...us&model=M2N-E
>
> So I went into the BIOS and tried to find it there but couldn't
> either. So when it comes to flashing the board, I am not ready yet
> because I can't figure that part out.
>
> The Black 5000 X2 box says : 2.6 GHz 1 MB L2 Cache
> Aida32 say : L2 512KB (on-die, full speed)
>
> Now, I am looking at the BIOS and have this
> CHIPSET :
> CPU <-> MCP55 HT Speed 5X
> CPU<-> MCP55 HT width 16^ 16/
>
> Where would I find the HT multiplier or is that what I have found?
> The speed or the width?
>
> My motherboard looks like revision 0502. The person at the ASUS forum
> is using 1202 or something, the newest revision is up to 1401. So
> should I use the older one? There is also a utility that will flash
> the bios, I am wondering if I should go about it that way or just use
> the 1401?
>
> Ok, that is enough questions for now. I hope I have added all of the
> relevant info.
The answer to the BIOS is simple. Go to the vip.asus.com forums. Look
for comments about the latest BIOS versions. If the users comment that
the latest one is not a good one, and they liked the release just before
that one, then you know which one to select.
The information on the CPUSupport web page is all fine and good, but
you don't have to settle for some middle release BIOS, when there are
later ones.
As for flashing method -
1) Check the manual. All the methods will be listed, such as DOS boot
floppy plus flashing program, data floppy or USB stick plus "Ezflash"
(a flashing program built into the BIOS), or the third method might
be Asus Update, a Windows based program. For safety, it is best if
you've already got the file stored on disk, before using a Windows
based approach. And to make it easier to read the manual, download
the PDF version from the Asus download page on support.asus.com .
Reading the included paper copy is no fun.
2) Check the warnings on the Asus download page for your motherboard.
For example, if the BIOS tab says "Do not use Ezflash", then you'd be
down to two methods. In some cases, Asus has a special download package,
which is used on a DOS floppy, when the other methods aren't going
to work. If you ignore the advice on the download page, some of these
problems are guaranteed to brick the board (you end up with no valid BIOS).
3) Of the three methods mentioned above, I rate the Windows method as
theoretically worst, due to the fact that so much stuff is running
in the background. Asus Update consults the web page, for some info
about the BIOS releases, but the data file it uses, doesn't always
match the actual files available (for my motherboard, it doesn't offer
me the latest BIOS releases, through the Asus Update interface).
When DOS is running, there is much less going on. And even then, a
DOS level flash can screw up for a number of reasons. So flashing is
not without some level of risk.
And a floppy based method is only going to work, if the BIOS fits on
a floppy. There are now a couple motherboard BIOS that are 2MB in size,
and for those, you're looking at some other kind of storage solution,
such as USB flash or some other kind of removable media.
*******
HT Speed 5X is the Hypertransport multiplier. CPU_input_clock times
that multiplier, gives the HT bus clock. Say that the bus clock spec for
a given processor is 1000MHz. Then 200x5 (the nominal value( is OK.
If you increased the CPU input clock to 223, then you'd select
HT_Multiplier = 4, as then 4 * 223 = 892MHz, which is less than 1000MHz
and is OK. You don't want the HT to run significantly faster than the
rating. (It affects bandwidth to the PCI Express video slots, but it
isn't a big deal if it runs at 892 instead of 1000.)
If you're changing the CPU multiplier (on a black edition say), and
keeping the CPU_input_clock fixed at 200MHz, then the HT multiplier
doesn't need to be adjusted. (Because 5 would still be a good value.)
I don't know if I've got the right equation for RAM. It used to be
something like CPU_input_clock * CPU_multiplier / memory_divider gave
the memory speed. And the memory_divider was selected, so that the
memory would not be run over its rated speed. (In some cases, that meant
a DDR2-800 stick, would run at DDR2-750, as the memory_divider didn't
have fine enough resolution to give exactly 800, and AMD didn't want
the DDR2-800 memory running at something like DDR2-842 or whatever.)
You can use a program like CPUZ, to observe what is happening. For
example, here is the CPUZ tab for the CPU core. It shows 200 x 11 = 2200
for a core.
http://www.tbreak.com/reviews/imageview.php?image=11105
The memory (DDR2-800 module) is running at "CPU/6" or 2200/6 or 366.7MHz.
Times 2, that is DDR2-733, or a little slower than the rating of the module.
http://www.tbreak.com/reviews/imageview.php?image=11105
The Hypertransport bus speed is shown in the CPUZ report summary
(you can generate a report while in CPUZ). (At least the screenshots
I could find, didn't show it, but the report summary seems to.)
So using CPUZ, when you're in Windows, you can see what has changed
when you adjusted the BIOS. By taking small steps, you can see how
the settings affect more than one thing or not.
http://www.cpuid.com/cpuz.php
Bumping up the CPU_input_clock, increases CPU_core, HT_bus_clock,
and memory_clock, as that clock feeds everything either
directly or indirectly. So you could do one experiment, where
you increase the CPU clock by 5 MHz (200 to 205 MHz) and
look at what has changed. Then go back to 200MHz, and change the
CPU multiplier by 1, and see what clocks changed in that case.
That will help you understand how they work. By keeping the
changes small, I'm hoping you wouldn't need to adjust anything
else.
Another thing, is the CNQ (Cool N' Quiet) setting. Maybe Wes can
comment on what to do with that one. I'm not sure it always works
right when you're overclocking.
Paul
>> Multiplier is locked unless you have a black edition. If you want to
>> overclock it, set HT multiplier to 4x, lower base ram speed 1 setting, and
>> raise FSB (system bus) from 200 to 233MHz or whatever.
>>
>> --
>> Want the ultimate in free OTA SD/HDTV Recorder?http://mythtv.org
>> My Tivo Experiencehttp://wesnewell.no-ip.com/tivo.htm
>> Tivo HD/S3 comparedhttp://wesnewell.no-ip.com/mythtivo.htm
>> AMD cpu helphttp://wesnewell.no-ip.com/cpu.php
>
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