having trouble getting my mobile 2400 past 2300

[Tyson82]

So I bought this 35w 2400 mobile used here on the forums. Guy didnt make any claims about its performance, so Im not complaining about him or anything.

When I first got it, I could only get it up to 2.2. (200x11) It wouldnt run stable beyond that. Either multiplier or FSB.

Tried again after a few days, and it went to 2.3 (200x11.5) and is 3d mark stable. I havent Primed it out yet. Ive been running 2.3 for about a week with no problems.

I cannot, however, go any higher than 2.3. Not with multiplier or FSB changes. I can get 2.3 in a number of ways. 210x 10.5 or 200x11.5 without a problem, but if I go even 10mhz over 2300 it looses all stablity.
211x10.5= 2310 isnt stable, 202x11.5=2323 isnt either. Voltage doesnt change anything, Ive underclocked my RAM, dropped the memroy settings, nothing helps.

Maybe this is normal, I dont know. But it just seems odd that I cant even get close to stable over 2300, but am completely stable at 2300.

Im running water cooling so that isnt the problem either. CPU block and Northbridge, and I have a heatsink on the southbrige.

There isnt a lock on some of these or anything like that, is there?

Any thoughts?

Oh, and its the system in my sig, my temps are 72F system and 105F cpu. And Im running Win98SE

 

[Spikesoldier]

whats the stepping?

id say if the guy didnt claim anything, that its probably the worse core of the two, which is AQYHA.

ALL barton mobiles came with either two core steppings: AQYHA and IQYHA.

AQYHA is good up to about 2.3 like you said, i have one myself.

IQYHA is the core that you see getting up into the higher speeds - 2.4, 2.5, sometimes with modest voltage increses or at stock, and even higher when you throw it on water or phase change.

it really is luck of the draw, but you can bet that the AQYHA's kinda hit a brick wall at 2.3, no matter what kind of voltage you throw at it.

my chip hit 2.3 also, but using 1.725V. i figured it was too hot (58C under load) and eventually i started bluescreening when it was stable a week before. now i am running 2260 on 1.6V, and much cooler, on a Zalman CNPS 7000A AlCu. when i dropped the voltage, my temps dropped about 8-10C under load.

i suggest if you really want performance to ditch the socket-A platform, there are better platforms for you to use that watercooling system on. with the options you have now, i think socket A is a waste if you want true raw, all-out performance.

edit: some things for readability's sake

 

[Tyson82]

so then it isnt just me , huh? Well Ive never had a proc that just stopped overclocking like this one. I looked at the stepping before I installed it, but forgot to write it down. Ill have to pull it later on and look.

As far as the platform goes, 2.3 on this system is giving me what I need for the money right now. Im kinda cheap sometimes, and I dont feel like going through all the work either. hehe

Is there a prog that read the stepping?

 

[fbrdphreak]

CPU-Z i believe tells u stepping

 

[Hyperlite]

Tyson what is the stock frequency on your RAM?

 

[Tyson82]

the RAM is pc3200

and unfortunatley CPU-z isnt giving me stepping. It has a place for it, but no information is presented. Guess Ill have to pull it.

 

[Concillian]

I have a 35W 2400+ that I have to run at 1.775 volts to be stable at just below 2400 MHz. Not all mobiles are 2500+ MHz monsters

 

[Fern]

Since you're not running P95, how can you tell it's "unstable". Does it refuse to boot?

What vcore are you using to get 2.3mhz? And are you reading it from the BIOS or MBM5? Remember the NF7 undervolts vcore.

Did you find any glitch in the 98se version of the install proggie for the chipset drivers? I sure did, took me while to figure it out, hehe.

Fern

 

[Tyson82]

Originally posted by: Fern
Since you're not running P95, how can you tell it's "unstable". Does it refuse to boot?

What vcore are you using to get 2.3mhz? And are you reading it from the BIOS or MBM5? Remember the NF7 undervolts vcore.

Did you find any glitch in the 98se version of the install proggie for the chipset drivers? I sure did, took me while to figure it out, hehe.

Fern

I know its unstable because I cant run a single loop on 3dmark 2001. Sometimes it wont even boot all the way to Windows.

Im running 1.725v on the core right now. That is the setting in BIOS and the MBM agrees with it.