2.8c HELP!! I can't get past 240FSB

[jhurst]

But what I have always heard is that the 12V rail is much more important in OC'ing P4 systems compared to that of AMD. Just what I've heard....

 

[l31itz]

Honestly, I think my cpu could hit 250FSB if I had a better PSU. After running prime95 and watching the 12volt rail dip to 11.4 before it crashed, I'm confident that it is a power issue. However, the CPU hits 70C so the issue is also cooling. Therefore, I'm going to say screw it and throw in the towel at 240FSB. =)

Man, my room is freaking hot. -_-

Maybe I should invest in several case fans to take the heat away.

 

[superHARD]

If the psu isn't controling the rails then it must be the mobo doing it...put some ram sinks on the voltage regulators on the mobo!!!

 

[Zap]

Originally posted by: l31itzMan, my room is freaking hot. -_-

Maybe I should invest in several case fans to take the heat away.

Heh, I have a 120x120x38mm fan that pulls 1.2 amps on 12 volts (14.4 watts). That puppy moves almost as much air as 12" desk fans. It's a monster. In a system it will cause reverse air flow through the power supply. For sale, if anyone wants it.

Back to the original problem, I'd say before wasting a single cent more on power supplies or MOSFET heatsinks and such, lower the memory multiplier as LOW as it will go. Take it totally out of the equation. Don't matter how great it is supposed to be, if that one thing isn't tried... So simple, just a few reboots to find out if it is the RAM or not.

Another thing to try is to take the side cover off and point a desk fan into it on "high." That's just to take possible overheating out of the equation.

Finally, perhaps it is the motherboard or indeed the CPU that won't go that high.

Like Sherlock Holmes once said, "When you have ruled out the alternatives whatever remains, no matter how improbable, must be the truth." The important thing is "ruled out the alternatives." If you don't give lower memory multipliers a shot (or the desk fan) then you haven't ruled out anything. You'd be wasting your time and money on other possibilities.

 

[jhites]

Originally posted by: l31itz

Originally posted by: jhites
Are you running your ram using 1:1 or 5:4 memory ratio?

If your are running 1:1 you may be maxing your memory.

I'm running 1:1 but it's PC3700. I didn't think it would have that much trouble going from DDR466 to DDR500

You will never know if it is the ram, cpu or ps until you change the multiplier to 5:4 and/or run MemTest86. You must rule out the ram when you are overclocking the cpu. The new psu will most likely contribute to overall stability but some chips will run 3.5 and some will not. My Tru480 psu runs the 12v rail at 11.74v and that is with my 2.8C at 3674Mhz.

 

[Budman]

You did plug in that 4 pin 12v power connector to the motherboard right?


Just asking....

 

[Pilsnerpete]

70 Centigrade sounds really, really hot for a cpu equipped with a Zalman. Where do you live, Death Valley...or Palm Springs? My 2100b starts flaking out past 50c--freezups and stuff. I would definitely invest in a cooler environment.

Set the ram/cpu ratio to 5:4 and crank it up, as has been mentioned.

 

[jhurst]

70C is too hot, even for an Abit board. Might make sure and see that the HS is sitting squarely over the CPU, and that the retention rail things (the 2 silver things can poorly slide through the MB retention posts) haven't slid out of place. Zalman needs to get that redesigned.

 

[imported_mystro]

Originally posted by: l31itz
OK, so major bummer. Aparently the power supply doesn't do jack for Overclocking.

You are so right..I'm always surprised at how little users really know about PSU's. I always suggest they read Tom's hardware PSU FAQ or the Anandtechs. Any quality PSU in the 300-350 will run solid numbers on the average across the board with room to spare on mid-high level systems ..a 400w *quality* PSU will run any high end system. I've checked this many times..the hype on getting bigger PSU's is just that..pure hype and most people grab the biggest,cheapest PSU they can and it won't do near as well as a lowly 350w quality PSU across the rails.









.

 

[imported_mystro]

Originally posted by: Zap

Originally posted by: l31itzMan, my room is freaking hot. -_-

Maybe I should invest in several case fans to take the heat away.

Heh, I have a 120x120x38mm fan that pulls 1.2 amps on 12 volts (14.4 watts). That puppy moves almost as much air as 12" desk fans. It's a monster. In a system it will cause reverse air flow through the power supply. For sale, if anyone wants it.

Back to the original problem, I'd say before wasting a single cent more on power supplies or MOSFET heatsinks and such, lower the memory multiplier as LOW as it will go. Take it totally out of the equation. Don't matter how great it is supposed to be, if that one thing isn't tried... So simple, just a few reboots to find out if it is the RAM or not.

Another thing to try is to take the side cover off and point a desk fan into it on "high." That's just to take possible overheating out of the equation.

Finally, perhaps it is the motherboard or indeed the CPU that won't go that high.

Like Sherlock Holmes once said, "When you have ruled out the alternatives whatever remains, no matter how improbable, must be the truth." The important thing is "ruled out the alternatives." If you don't give lower memory multipliers a shot (or the desk fan) then you haven't ruled out anything. You'd be wasting your time and money on other possibilities.

At last someone who really has some insite on OCing basics..thx