The Truth about Dividers and Multipliers and why My fourth graderknows more about OverClocking than

A

Aaron Dinkin

I have a question that roots from a post in another group...

How, What... Could anyone please explain this in an OverClocking fashion??

Like, what is this about dividers, multipliers, CAS, DRAM timings and
such and how to understand the people on the OverClocking NewsGroups???

Thanks In Advance

~7~

--Snail



Divider needs to be "4" NOT 5

133 x 4 = 533
multiplier of 23 to get 3ghz""
 
N

Noozer

I would also like to know just how clock settings for CPU, DDR, AGP, PCI as
well as memory timing all affect the performance of my PC...

Especially since my memory is PC4200 (DDR533) stuff.
 
C

Chris Stolworthy

Aaron Dinkin said:
I have a question that roots from a post in another group...

How, What... Could anyone please explain this in an OverClocking fashion??

Like, what is this about dividers, multipliers, CAS, DRAM timings and
such and how to understand the people on the OverClocking NewsGroups???

Thanks In Advance

~7~

--Snail




Divider needs to be "4" NOT 5
Ok multipliers, multiplier is based off your computers front side bus.
http://www.tutorgig.com/encyclopedia/getdefn.jsp?keywords=Front_side_bus

You use the multiplier times the front side bus to get your processors
speed. Now here below they are talking about a pentium 4 processor (I
assume). Because the front side bus of some pentiums are "Quad pumped"
meaning the original FSB (Front side bus) X 4 = actual FSB. THen you take
your actual FSB and put it to a multiplier to get your CPU speed. Now the
thing to remember is that the FSB shuttles Data to and from the processor.
So having a 3ghz processor and a 100Mhz FSB wouldn't work, you wouldn't be
able to shuttle data fast enough! So as processors get faster so do FSB
speeds.
133 x 4 = 533
multiplier of 23 to get 3ghz""

Now CAS latency affects Ram and Data retrival speeds from it. SO ram with a
high cas latency 3ns is slow, where as a 2ns ram is much faster, which means
a lower CAS number = more money, but better performance.

DRAM timings have to do with how data is retieved form the RAM as well, the
motherboard typicaly needs to know what the CAS timing is on the ram, the
charge delays and etc. Think about it in the terms of a car, you can slpa
one together and it will run but not at its best. Instead you have to get
the timing right, so that everything works in harmony. A computer is much
the same, the closer to the actual specs you are when timing your ram, the
better the performance. Now overclocking comes of the fact, that most
computer hardware is released at specs that run it at less than its peak
efficiency. Why you ask? Take processors for instance. Hardocp.com ran a
test where they Overclocked 4 of the same processors, not all could go as
high as the next one, because of manufacturing defects, age...etc who knows
exactly. So the companies release a spec at the fast possible speed that
these parts will run stable. This is why OCing can cause system stability
problems, but if done correctly will give you a faster machine than what you
paid for. I myself have an Athlon Xp 2500+ that is OC'ed to a 3200+ and it
runs fine.

Hope this helps.

Chris
 

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