Archived from groups: alt.comp.hardware.overclocking,alt.comp.hardware.overclocking.amd (
More info?)
It appears that you have a standard stock aluminum (al) heat sink (HS) with
a stock fan. The al heat sink will have a differential temperature in
degree Celsius per wattage rating (C/W), which determines it's ability to
remove heat per power generated by the processor. The differential
temperature is the temperature difference between the core temperature and
the air intake temperature at the fan. At this point you can't change that
much without changing the heat sink. The C/W of the HS is limited to the
material, which was used to build the HS and the fin design (exposed area to
dissipate heat).
1. You can move more air across the heat sink with a higher air flow (cubic
centimeters per minute), which decreases the differential temperature across
the surface of the HS material lowering the C/W.
2. You can increase air flow in the case, which also decreases the
differential temperature by lowering the processor fan intake temperature
lowering the C/W.
3. You can use a different HS made from copper changing the material
composition, which lowers the C/W value by allowing more heat to be adsorbed
by the material and dissipated.
Ref. 1 replace the current HS fan with a high velocity/volume HS fan. Look
for a higher rpm fan of the same size.
Ref. 2 add additional fans at the case intake and the case exhaust or add
high volume fans at the case intake and case exhaust or both.
Ref. 3 replace the HS with a copper unit.
If it is in your budget try apply all three references above. A discussion
of dynamics involved with heat removal at the processor is beyond the scope
of this email and requires a vast knowledge of thermal dynamics. What I
have stated above are some general principles to follow for good pc cooling.
There are also voltage limitations to the processor when over clocking that
have nothing to do with the temperature. A higher voltage will produce a
higher wattage
(voltage x current = power (watts)).
A higher wattage produces more heat like a light bulb but the internal
voltage in the processor does not produce the heat. The heat is generated
as a result of the electrical current through a given restricted path called
voltage. The higher the restriction the greater the heat and the power
requirements to move the current. Think of it like a water hose where
pressure is the power needed to move water through a restriction. When you
restrict a water hose the pressure increases at the restriction. At some
point you can restrict the water hose to a point that the pressure at the
restriction decreases and the pressure behind the restriction increases (no
flow of water). This is similar to what happens by increasing the voltage
in the processor. At some point you reach a limit and the system will
become unstable and damage will occur, for a Athlon processor this is around
1.85 volts but varies from processor to processor based on manufacturing
process and the wafer material used.
In very simple terms, by lowering the processor temperature you effectly
change the limit at which you can increase the voltage with out damage
(pressure build up behind the restriction). Note: damage can occure by over
heating, over voltage, or both. This will yield a higher stable over clock
for the processor by increasing the supplied power to the processor.
For a in-depth study of what happens when you start to over clock your pc
search the web. I don't have a specific web site because there are a large
number of site that deal with this issue and explain what is taking place.
Some web sites will say not to, others will say go for it, and some will
just state the facts. Personally I don't have allot of money to spend on
the latest and greatest stuff, so I over clock all my personal systems to
extend the life of the product a few months/years depending on the life
cycle at that time, which is getting shorter every year. I have been over
clocking since the 486 processors were released and have had only a few
component failures, mostly video cards and mother boards.
On older mother boards you could not lock the ISA, PCI, APG clock
frequencies so when you over clocked the cpu bus you over clocked everything
else. Check the manual and see if the PCI and APG frequencies are locked
apart from the cpu FSB if not find out what the dividers are for the given
FSB. Increase the FSB and lower the cpu multiplier if possible and make
sure that memory is running at the same frequency as the FSB for the AMD
processor. If the APG and PCI buses are not locked do not exceed 72 Mhz on
the APG bus, it will result in possible video card failure. Do not exceed
67°C load on the CPU motherboard temperature resistor it will result in a
early cpu death (short life). Take the fsb as high as it will go with out
exceeding the above parameters by lowering the cpu multiplier. Once you
have a stable system try increasing the cpu muleteer at the stock voltage
once it becomes unstable increase the voltage in smallest step possible
until cpu is stable continue this process until it gets to hot under a load
of becomes unstable. Use prime95 to test for cpu / memory stability and
mark3d for apg bus stability.
http://www.a7vtroubleshooting.com/info/cpu/
http://hardware.mcse.ms/message84522.html
"Strider" <email.given@thepoint.youasknice> wrote in message
news:MPG.1bd12e68231e8dd498a419@news-text.blueyonder.co.uk...
> Hi there,
>
> I really can't afford to upgrade and because my PC is a gaming rig I
> need to squeeze the last ounce power out of it because I just bought
> CS:Source and it's very demanding.
> First, my rig with as much detail as I can master.
>
> AMD XP 2700 (2.2ghz)
> Asus A7v333-X
> FSB 333
> 1.5gb 333 RAM
> Gainward Geforce4 ti4200
>
> I don't know how to accurately understand motherboard monitor so I've
> took a screen shot: stri.no-ip.com/temp/mm.jpg
>
> If I spent say, £20 on cooling how much (if any) improvement could I get
> from CS:Source?
> My current CPU temp, is that good, bad? what would be the average?
> And lastly, if I can overclock, does anyone have any safe guides for
> overclocking.
>
> Forgive me if I've broken any of the rules of this group. Any help in
> overclocking, especially if I can improve performance would be
> immeasurably helpful!
>
> Thanks
>
> --
> AGHL IRC Room:
http://stri.no-ip.com/irc.php
> Clan Deleterious: www.deleterious.tk
>
> "After unloading around seventy-five new plants from
> the car, she hunts me down; finding me, by a fluke,
> sitting in front of the computer."
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