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Help - O/C Probs With Mobile 2400+

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dennisjai215

Banned
ok look..

i just recieved my Mobile 2400+ W/ Abit "NF7" (yes the regular one)

i am having some problems overclocking.. please help me out..
when i clear my bios.. my comp runs at 100x5 ....
so i o/c it... to 166x13 which runs fine.. but low clocking speed
i try 144x15 which again is fine... but i wanted higher speeds
if i try 166x15 it wouldnt boot
if i try 150x15 it still wouldnt boot...
sometimes i even have the BLUE screen after the WINDOWS XP Screen..
help diagenose please..

EARLIER when i first recieved it.. it wouldnt get past windows XP screen
so i reformatted because earlier i was using an ECS Motherboard
but i thought everything should be fine now..
help please!
 
dude, 166x15 = 2.5ghz

thats way to high to start off. use some intuition. and set the clock in your bios if you want the correct time,duh!
 
im only using pc2700 corsair ram so i doubt i'll get 200 fsb.. higher multiplier is good because that way i dont need such a high fsb..
 
You state you succeeded at 13x166 and 15x144.

A quick look at the calculator shows that:
166x13=2158Mhz
144x15=2160Mhz

Those are pretty much identical, but note that the first one has a higher bus speed. Therefore, why'd you even bother with 144x15?

What you want to do is see if you can handle 166x13.5 or 166x14. Since you are limiting yourself by a 166FSB, you might as well stick your bus as high as you can then push your multiplier to the limit. The really nice overclocks on those chips are coming at high bus speeds. Since you don't have PC3200 (and you don't want to run asynchronously) you have to be happy with what your hardware can do at PC2700. Remember to watch your voltages and temps - don't fry your CPU.

Once you find what's the highest 166x multiplier you can handle, you could try moving up your FSB a little to see what the cap is on your RAM. You might be able to squeeze out a few more Mhz that way. But unless you had some DDR400 or better, you won't be able to see what your CPU could really do. 166x13 might be the limit for you now, but your CPU might be able to do 200x12 or better with faster RAM.
 
ok so i've tried 13.5x166 wont boot up..
im using corsair 512 pc2700 ram...
if i upgrade to a mushkin pc3200 512mb ram .. would i be able to clock higher?
if so.. estimate about how high?
 
2200-2400 (11x200 or 12x200) is what I've heard most people hit with the 2400+, assuming you have the hardware to do it (ie decent cooling, mobo that officially supports a 200Mhz bus, and DDR400). What you'd actually get may or may not be the same.
 
Originally posted by: Markfw900
Your memory is holding you back. Get some PC3200 or PC3500
Click to expand...

the corsair should have been able to take 150x15 just fine. it isn't the ram.
 
Up the memory voltage ?

I highly suggest you invest in some PC3200 or 3500 Ram

Yes, I know you can achieve the same CPU speed with lower FSB and higher multiplier but it will be faster with higher fsb and lower multiplier ( even at the same speed ).



 
I would try 11.5x200 and call it good. Thats still faster than a XP 3200+. (assuming its stable at that speed)
 
Originally posted by: XBoxLPU

Yes, I know you can achieve the same CPU speed with lower FSB and higher multiplier but it will be
faster with higher fsb and lower multiplier ( even at the same speed ).
Click to expand...

is this true? a higher fsb / lower multiplier > lower FSB / higher multiplier at the same MHZ?

 
yeah, if you can achieve a higher fsb (assuming the CPU frequency is unchanged) you will receive increased performance. Basically, it just improves access time to the memory. HOW MUCH performance improvement you get varies based on chipset. But always go for HIGHER FSB/Lower multiplier rather than Lower FSB/Higher Multiplier.
 
Originally posted by: dennisjai215
well i got to to 200x12@1.8v.. but the thing is.. i ran prime95

got a error in 19 minutes.. =(((((( how to get it stable?
Click to expand...
Anytime an overclock isn't stable, your two choices are raise vcore or lower overclock.
 
Originally posted by: myocardia
Originally posted by: dennisjai215
well i got to to 200x12@1.8v.. but the thing is.. i ran prime95

got a error in 19 minutes.. =(((((( how to get it stable?
Click to expand...
Anytime an overclock isn't stable, your two choices are raise vcore or lower overclock.
Click to expand...

yeah.. i had an error from prime95.. but i never restarted my computer to fix anything.. right now its still running at 2.4ghz.. and i dont have any problems with it.. should i still lower it and run prime95 again?
 
yeah.. so right now im on my crapcomputer..

i lowered my o/c to 11.5x200
2300mhz is ok.. i guess
i've been running prime95 for 2 hours with no errors
should i be satisfied that i clocked 1.8ghz to 2.3ghz?
and how long should i keep running prime95 i wanna use my computer =X
 
Originally posted by: dennisjai215
yeah.. so right now im on my crapcomputer..



i lowered my o/c to 11.5x200

2300mhz is ok.. i guess

i've been running prime95 for 2 hours with no errors

should i be satisfied that i clocked 1.8ghz to 2.3ghz?

and how long should i keep running prime95 i wanna use my computer =X
Click to expand...

Just let P95 run in the background while you are trying out your new computer for a week or two or you could let P95, 3dmark2k1 (or 2k3) and some other benchmark programs (Sisandra) run on your computer while you are asleep. If there are no errors for over 12-24 hours it should be stable.
 
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