"Jon D" <jon_d@nomail.com> wrote in message
news:969E109E36ADF71E5D@66.250.146.159...
>> "Jon D" <jon_d@nomail.com> wrote in message
>> news:969DB17618C3771E5D@66.250.146.159...
>>>I am running a Duron Applebred 1800 in a Via 266 mobo by Syntax
>>> with 768 KB of 133 SD-RAM. CPU temp under load = 44 degrees C.
>>> Phoenix BIOS.
>>>
>>> My crappy mobo doesn't permit very many setting. (EG can't set
>>> cpu multiplier.)
>>>
>>> ---------
>>>
>>> Can I check with you guys about some basic stuff:
>>>
>>> If I slightly increase the cpu voltage from the 1.52 V at
>>> present (nominal voltage for my Duron 1800 is 1.50 V) then will
>>> that help increase cpu stabilty? I can increase by only 25 mV,
>>> 50 mV or 75 mV. I figured that 75 mV feels safe - QUESTION
>>> ONE: is this right?
>>>
>>> In the past with a slower processor, I increased the "CPU Host
>>> Clock" (which sounds to me like the FSB) from a starting value
>>> of 100 to 104 (an extra 4 %) or a slightly unstable 106. I
>>> think memory was the limiting factor for stability this time.
>>>
>>> I have currently got all the memory settings at what I believe
>>> is their most aggressive:
>>> SDRAM cycle length = 2,
>>> Trp = 2T,
>>> Tras = 5T,
>>> Trcd = 3T.
>>>
>>> QUESTION TWO: Should I be able to increase the FSB to about
>>> the same value as before because, presumably, the faster new
>>> processor (Duron 1800 versus old Duro 700) should have no
>>> effect on the FSB setting?
>>>
>>> QUESTION THREE: Would I be able to increase the FSB bus more if
>>> I made the above memory settings less aggressive? This would
>>> seem to be the only way to increase the CPU speed.
>>>
>>> Finally, is "Vcore 2" (reported by Motherboard Monitor 5)
>>> essentially only used by the CPU for I/O operations?
>
>
> On Sun 24 Jul 2005 22:41:19, Sleepy wrote:
> <news:3WTEe.6712$dN6.317@fe1.news.blueyonder.co.uk >
>>
>> This little program http://www.cpuid.org/cpuz.php will give you
>> a good idea of what settings your
>> RAM can handle and
>
> Nice program. Thank you for the reference.
>
>
>> you would probably have to ditch that RAM and
>> go for PC2700 to overclock
>> the FSB which is your only option on that board. And it would
>> have to be decent PC2700 as there isnt
>> much scope in the RAM settings. I have the same board
>
> Sleepy, as you have the same mobo then you know that the Syntax
> mobo will take SD-RAM or DDR.
>
> If I just replaced my 768 MB of 133MHz SD-RAM with the same amount
> of 333 MHz PC2700 memory, then do you think I would see a 10% (or
> better) improvement?
>
yes - you dont get a huge increase but that 10% is worth it.
> As you say, there is not much scope for overclocking so maybe I
> would just use DDR memory and use reasonable aggressive settings.
>
> What do you reckon?
If you overclock the FSB and you can do it easily in the Bios then
you get everything to run a little faster. Try 140mhz and your 1800 CPU
becomes
a 2000 and your memorys faster and the Hard Drive interface too. Bump the
CPU voltage
up a bit to keep it stable say 1.65v but as you increase voltage you will
increase heat too
so use Motherboard Monitor to keep an eye on temps. The 40-50 c range is
good and up
to 58 c on a hot summer day is what I get.
> You seem to be in the UK. The price of generic DDR memory (as I
> am not overlcoking) with CL=2.5 that might be ok at CL=2 is approx
> £40 + p&p. Do I get at least a 10% improvement for putting that
> memory in?
personally I went to 1gb from 512mb - running XP Pro and HL2 requires
that much RAM to run smoothly. Ive never worried too much about CAS
settings etc .. its the quantity of RAM that counts.
>> and 2
>> differant sticks of PC2700 - one stick will
>> overclock up to 150mhz which means Im o/c the FSB and everything
>> - the other stick wont o/c without
>> a TRAS setting of 7 which this board wont do. So choose your RAM
>> carefully - up the voltage on the CPU core
>> and make sure you have good cooling. Is it worth it ?
> 
Re: basic queries about overclocking 
Linear Mode
