[SOLVED] over clocking Pentium dual core e5300 with biostar g31 m7 ta 6.7 very help me

[mascarad ninja]

I decided to over clock my cpu cpu se that what I did
multiplyer to 280
so the clock now is 3.6 ghz
and ram is 9xx mhz but the performance is worst than when I reach 3.3ghz what should I do to get better performance
since I can't go higher for cpu clock and can't choose taiming or ram frequency freely
I don't what that is but my fsb is 1120

 

[BFG-9000]

Amazingly, that motherboard actually has voltage controls, even if it is only Default / +10% / +25% / +35%

E5300 is a 45nm chip so maximum safe voltage is 1.45v. There's a "Hardware Health" page in the BIOS that should show what the default voltage of your chip is (obviously when the voltage is set to "default") so you can select the overvoltage setting that comes closest to this maximum without going over. And I would set it at the maximum because even at 4GHz a dual-core will only draw 100 actual watts, which even a stock quadcore cooler will handle fine.

G31 chipset has a maximum rated speed of 4 x 333 =1333FSB so I would just set it there. As 3.6GHz is working fine I would just set the multiplier at 11 for 3.67GHz to start with, or 12 for 4GHz.

With FSB is there can be a latency penalty if you run the memory at an asynchronous speed so first try the synchronous 667MHz DDR2 setting, then the asynchronous 800MHz (check with your favorite memory latency benchmark to see which is faster). The thing is, with no Static tRead Value (tRd) adjustment in the BIOS, asynchronous may actually be faster depending on what values the BIOS is programmed to set for them, so you have to try them both

If you like to tinker, 4 x 400 = 1600FSB is also an option with multipliers 9 or 10.

 

[mascarad ninja]

the for the help but:
I can't go over 180 multiplier (3.65ghz)
evan that my cooler is very cable of it (1.45v which is the maximum 15%)
ram frequency can't be Manuel selected .at 3.65ghz it give me two choices 950mhz or 1120mhz
it change every time I change the core clock
I can't control fsb
so is there what I can do

 

[BFG-9000]

The "CPU Frequency Setting" is actually the FSB. 4 x 280 = 1120FSB

If you cannot change the CPU multiplier then you are stuck with the default, which is 13x for E5300. That's too high, because Core 2 performance is very dependent on high FSB and 13 x 333 = 4.33GHz which is unlikely on such a board.

In the early days of overclocking, Tom's found that circuits designed for 66MHz were more stable at 83MHz than 75 because resonances were damped better at 1.25x of the design frequency than in-between ones. In your case though I'm certain some strap change occurs between 250 and 280 which slows things down

 

[mascarad ninja]

so what should I do

 

[BFG-9000]

Your system is 14 years old. If it performs better at 3.3GHz than 3.65GHz then I would just leave it at 3.3GHz.

On another board I would suggest spending the $5 for a quadcore (none of which have such high multipliers) but G31 can only address at most 3.25GB of RAM due to a chipset limitation so nowadays even this small sum would be better spent toward another system.

I am not aware of any hard mod for multiplier reduction, as the popular tape and defroster grid paint pad mods are to change BSEL default FSB or VID voltage. It may be possible, but is probably undocumented

 

[mascarad ninja]

thx you really did help I appreciate it