I need STABLE bios settings...help?

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q9400 cpu, gigabyte ga-ep45-ud30 rev 1 motherboard, 4 gb of ddr2-1066
ram, using 700 watt PSU and using VISTA.

The CPU is defaulted to 2.66Ghz but I can't get it to even go beyond
1.99 Ghz or it will not boot or when it does boot it loads windows but

Multiplier ranges are from 6 or 7 or 8, nothing else

I'm needing a good Combination of multiplier and cpu freq to get a
stable computer.

if you can help me i appreciate it a lot.

Re: I need STABLE bios settings...help?

Robert Blass wrote:
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333MHz x 8 = 2664 MHz.

FSB1333 divided by 4 (for quad pumped), gives 333MHz as the
nominal CPU input clock.

And 8 is the proper multiplier for the rated core speed,
based on that.

The multiplier variation is for the purposes of EIST
or Enhanced Intel Speedstep. When EIST is enabled,
the OS can adjust the FID and VID according to system
load. That means the core clock changes while the computer
is running (the multiplier is re-programmed). Disabling
EIST in the BIOS, should result in the processor running
at nominal speed (2.66GHz) all the time.

Now, how does your experience differ from that ?
Are you pushing your RAM so hard, that the system
is falling over due to a RAM error. Have you
accidentally set some clock to double its normal
setting ? You must have done something to upset it.
Perhaps you should try "Load Setup Defaults" from the
BIOS, assuming such an option is available in
the Exit menu.


Re: I need STABLE bios settings...help?


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I did 8x333 and have no TOUCHED the ram settings and this thing is as
unstable as nitro.....

Am I going to have to UNDERclock this to make it work?


Re: I need STABLE bios settings...help?

Robert Blass wrote:
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Have you located any private forum discussing your motherboard ?

Is there any possibility this is BIOS version related ?

It takes about five BIOS releases, before most of the
bugs are worked out. Some users discover that one BIOS
release, is much better than a more recent release. So
the latest one may not in fact be the best one.

You can try dropping the speed of the memory, such that
memory is not a limitation to the operation of your
system. Then, you can experiment with the processor and
see what it will take. Once you've characterized the
processor (determined what voltage is needed for what
level of overclock), you can go back to working on the

While working on the processor problems, I'd use one or
two sticks of RAM. Not four sticks to start. Again,
my emphasis would be to take the pressure off the memory
subsystem, while trying to figure out what the problem is
with the processor.

Memory is powered by Vdimm. The memory packaging may
have had a recommended voltage to meet timing. Use
that value in the BIOS, to help prevent memory problems
initially. You can dial down the memory voltage settings,
and retest with memtest86+ from memtest.org, to see how
much voltage is really needed to do the job.

Note that, when you overclock the processor manually,
the memory frequency goes up as well. The BIOS may not
be clever enough to adjust the CAS, tRCD, and that other
jazz, when that happens. It requires the brain and the
cunning of the operator, to compute correct values
for tCAD, tRCD and so on, based on the final expected
memory operating conditions. Otherwise, you could have
too tight a set of timings on the memory, by accident.

While some motherboards do set everything up nicely,
out of the box, as a system builder, you do have to
be prepared to get into the BIOS and adjust stuff, when
there is trouble. The purpose of that, is as much to
determine whether the motherboard should be returned
under warranty, as anything else.


Re: I need STABLE bios settings...help?

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Does the POST screen shoe the correct CPU model? If noy, you need latest
BIOS update, or you take it off AUTO and manually set bus speed to 133 and
check that you have correct voltage to CPU. Have you checked temp of CPU in
BIOS, at idle, should be below 40C. If too hot, your heat sink is NOT fitted
correctly. remove, clean and use fresh thermal compound. Check you did
remove any protective cover on bottom of heatsink.


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