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Hi Charles,
The AMD Athlon CPU is shipped from AMD 'Locked', that is, the chip has
physically been set at the correct speed, and will not allow you to increase the
speed above a certain maximum - in your case 750MHz.
At startup, the BIOS 'reads' these settings off the CPU, and runs at that speed.
It is possible to 'unlock' the CPU, so that the BIOS can override the
manufacturer set clock speeds, this involves connecting a set of gold 'bridges'
on the surface of the CPU, to allow the BIOS to recognise the CPU as being a
faster model.
It is possible that your supplier has mistakenly shipped a slower CPU to you.
It is also possible, depending on the Heatsink/Fan unit which is installed, that
your CPU is overheating, which would cause random lockups and other oddities.
In general with the AMD CPU's, the BIOS is right when it detects the CPU Speed -
however if you want to be absolutely certain, the best way is to remove the
Heatsink/Fan assembly. However, if you do this, be sure to have some thermal
compound (Arctic Ice is good), available, carefully clean off the thermal
compound from the CPU and Heatsink before reattaching the HSF unit. And be
careful with the HSF Unit too - it's not uncommon to crush the core of the AMD
CPU's by accident when fitting them.
Regards,
Mike Insch - IT Engineer, CCA, DipHE
SFS Creative Business Solutions Ltd - http://www.sfs-creative.co.uk/
Tel: +44 (0) 1224 624 014 Fax: +44 (0) 1224 218 318
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Charles Tubbs
<[EMAIL PROTECTED] To: Multiple recipients of
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Sent by: cc:
screwdriverlis Subject: From The Screwdriver List: CPU
speed
[EMAIL PROTECTED]
05/09/01 04:15
Please respond
to
screwdriverlis
t
Grab your Phillips, it's...
The Latest from The Screwdriver List!
Hi List,
I purchased an Abit KT7A Motherboard with 1 gig AMD mounted and
operational with fan. When I finally watched the BIOS run on startup, it
claimed the processor to be a 750 mhz Athalon. I contacted the vendor and
was told to set the BIOS to the 133 mhz bus and multiplier to 7.5 giving me
a 1 gig speed. When I do this the machine runs and then freezes up
shortly. (one hour to three hours) When I restart the computer, the BIOS
resets to the 750 mhz setup. Even if the machine does not freeze and shuts
down normally, the Bios tends to reset to the 750 speed. When I run CPUID
and Belark Advisor, both call the CPU either a 750 at the slow bus or a 1
gig at the higher bus. My question, is there any way, short of dismantling
the fan-CPU combo, of determining correctly what speed the CPU actually is?
Thank you for any help. This list is a God send with some of the most
knowledgeable people around.
Charles E. Tubbs
145 Medye Lane
Murray, KY 42071
[EMAIL PROTECTED]
270.489.2484
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