Archived from groups: alt.comp.hardware.overclocking (
More info?)
nondisputandum.com wrote:
> On Mon, 12 Apr 2004 21:37:45 -0700, "Jim" <null@null.com> wrote:
>
>
>>>Using only the multiplication factor, my P4 system 3.0 Ghz - 800 Mhz
>>>FSB now runs at 3.6 Ghz on an Asus P4P800-E Deluxe - EAY - 865PE.
>>
>>I assume by "multiplication factor", you mean you altered only the CPU
>>multipler?! But this can't be, since all P4 800's are multipler locked!
>>The only way to OC to 3.6GHz is to increase the FSB. So, like the others,
>>I'm confused.
>>
>>
>>>The RAM (400 Mhz) was downed to compensate the multiplication factor
>>>and thus clocks at 400 Mhz again...
>>
>>Huh? There's no relatioship between the CPU multipler and memory. The CPU
>>FSB * the multipler determine the CPU "speed". In your case, that P4 3.0GHz
>>is 200MHz FSB * 15 (stock). To run it 3.6GHz (OC), you'd need to change the
>>FSB to 240MHz (240 * 15 = 3600 = 3.6GHz), and perhaps more vCore (1.55v?).
>>If the memory is PC3200 (400MHz DDR), and is not overclockable (not likely
>>to 240MHz!), then you should be running w/ a 5:4 CPU/DRAM ratio (240 / 5 * 4
>>= 192MHz), or in Asus terms, DIMM Freq = Auto), which is perhaps what you
>>mean by "downed to compensate..."?! Yes, your memory would be underclocked
>>under this situation.
>>
>>Beyond that, I'm not sure what comments you are seeking.
>>
>>HTH
>>
>>Jim
>>
>>
>>"nondisputandum.com" <webmaster@ R E M O V E nondisputandum.com> wrote in
>>message news:a1ul70hoe3ljceob2q3a873adsk6ftv6c8@4ax.com...
>>
>>>Using only the multiplication factor, my P4 system 3.0 Ghz - 800 Mhz
>>>FSB now runs at 3.6 Ghz on an Asus P4P800-E Deluxe - EAY - 865PE.
>>>The voltage was upped to 1.55 V to compensate mild power drainage.
>>>The RAM (400 Mhz) was downed to compensate the multiplication factor
>>>and thus clocks at 400 Mhz again...
>>>There's & Coolmaster Gear ventilator on the processor,.. a ventilator
>>>on the chipset and a ventilator pulling fresh air in from the
>>>front,... processor temperature stays below 50 celcius and chipset
>>>temp below 45 degrees during XP stability test.
>>>
>>>Any comments?
>>>
>>>
>>
> PROCESSOR:
> As I said in another response,.. i'm not an expert but want to find
> out if my PC builder did a nice job,...
>
> I'll ad some datails below - your opinion is welcome:
>
> Miltipier: 15/1
This is what's confusing them. When you say "Using only the multiplication
factor" it implies to them that the 15/1 (the "multiplier") was changed to
something else; but it wasn't and, as people have noted, can't be changed
on P4s.
> Northwood P4N Petntium 4C 130 nm 1.6 - 3.4 GHz 1.475-1.575V
> Core voltage: 1.550V
> Stepping 2 / 9 (9)
> L2 cache multiplier 1/1x 3601MHz
> CPU core power estimated 95W
>
> MOTHERBOARD:
> FSB 4x240MHZ (960 Date rate)
This is where the overclock was done: increasing the FSB clock from the
standard 200MHz to 240MHz. I.E. Using the non changeable 15x CPU multiplier
shown above, it was originally 15x200 for 3,000 MHz and is now 15x240 for
3,600 MHz.
> CHIPSET1:
> Speed: 2 x 192 MHz (348 MHz date rate)
This is your memory clock from the ratio below. 4/5 of 240=192
Technically this is not being used to 'overclock'. It's being used to keep
the memory at a speed that will work with the CPU overclock and is actually
under clocking the memory by a small amount [((192/200)-1)*100 = -4%].
> Multiplier: 4/5x
> refrexh rate: 7.8
>
> Motherboard temperature (after several hours working): 28°/100.4F
>
> VOLTAGE:
> CPU: 1.57V
> Aux volt: 3.20V
> +3.3V: 3.31V
> +5V: 5.13V
> +12V: 9.55V
> -12V: -14.91V
> -5V: -7.71V
>
> System memory: 5991MB
> Physical memory: 2047MB
>
> CPU Arithmic benchmark:
> Compared to P4-C 3.2 GHz 512L2:
> WHetstone FPU/ISSE2 4095/7095MFLOPS
> Dhrystone ALU 9808 MIPS
>
>
>
>
>
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