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Celeron 2.4D - 3.2ghz max stable OC

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May 4, 2005 1:19:24 AM

I cant push my celeron 2.4D past 3.2ghz - whenever i stick it to 3.3ghz is posts until its time to load the os and stops. Iv tried the ram at 2.6v with crap timings (with the "266" ratio witch should still be hovering around the 360 - 380mhz ddr mark cause at FSB200/800 it will be at 200/400) aswell as crank up the vcore to 1.45 (seemed to help - loaded the hdd more but still retarted prolly from overheat). Im currently using stock cooling - the stock copper sprial hsf and after a few atempts i removed the cooler and cleaned and polished the base of the HSF and it still wont go past 3.2 (altho im now using cheap thermal paste by unick).

Would some better cooling help bring this chip to 3.6ghz as i want? Or am i forgetting something?

Current Overclock:
2.4 -> 3.2ghz / FSB178(712mhz) @ 1.4v (undervolts a little)

Celeron 2.4D (socket478) + Stock Cooling
ASUS P4P800-s (i848PE)
512mb DDR400 Kingmax TBGA (2.5-3-3-6@400)
Nvidia GeForceFX 5600 (standard)
Cheap 400w Omni PSU
Crap case but large powerful 9cm NMB fan over cpu
2 more case fans - one straped to the back of the PSU (to drag out more air) and one sucking in air and i cant fit anymore.
May 4, 2005 3:03:30 AM

more voltage on the cpu and ram will probably let you take it higher. you are probably nearing your apex with this chip so you should be upping your clock 2 to 4 mhz at a time to find your max stable speed. remember to up your voltage once after every stable point to make your next step up easier.
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May 4, 2005 3:25:09 AM

whats the max speed and voltage for stock cooling? or should i say currently at 3.2 and 1.4v im hitting around 57ºc encoding video - whats the temp limit before danger or would throttling help?
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May 5, 2005 3:42:19 PM

the max temperature before critical failure is eighty celsius but your system would stop posting way before that mark. if you take your voltage to 1.45 you can go past 3.8ghz BUT you should have very high airflow through your case first. I took mine to 3.8 with a 212mhz bus but my benchmarks dropped a lot so right now I am at 3.55mhz 1.435v with a 196mhz bus which is where my benchmarks apexed.

<P ID="edit"><FONT SIZE=-1><EM>Edited by tychoecho on 05/05/05 11:47 AM.</EM></FONT></P>
May 5, 2005 7:34:03 PM

Is the celeronD northwood or prescott based?
a b à CPUs
May 6, 2005 2:26:05 AM

its prescott based with 256k cache and yes it is hot - 4w hotter then a 2.6c northwood with twice the cache, HT and fsb800.

Mine wont remain stable at 3.3ghz at 1.45v - wont even get through loading XP but thats on stock cooling, could it be at the limit?
a b à CPUs
May 6, 2005 4:29:44 AM

tried some more overclocking with my 2.4d:
STABLE:
FSB 181 / 3240mhz @ 1.4250v
FSB 183 / 3294mhz @ 1.4750v
FSB 185 / 3330mhz @ 1.5125v UNSTABLE

this cpu wont budge past 3.2x!!!

im asking - would better cooling help overclock this celeron? at 3.25ghz it sits in prime95 at 62ºc max - too much?
May 6, 2005 1:16:44 PM

I had a similar problem with my 2.6Ghz P4c, it would not budge past 3.25Ghz even on watercooling.
May 7, 2005 2:13:15 AM

you have hit the wall as far as aircooling can go. a decent watercooling system is the coolermaster aquagate mini. they come in a 80mm and 120mm size and are self contained.
May 7, 2005 2:15:57 AM

have you tried skipping a few megahertz? try going straight to 200mhz see what you get out of that. some proccessors have a "clock hole" that they will not operate in.
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May 7, 2005 2:23:26 AM

my main system is a 2.6 and mine on stock cooling wont budge past 3.125g'z, 3.25 fails prime95 even at 1.7v, iv got it sitting at 2.8 thanks to DDR400.
May 10, 2005 11:09:32 PM

What stepping is that Celeron D? That is the main deciding factor in what kind of o/c you can expect. Also note that s775 chips tend to overclock noticably better then their s478 friends.

*Dual PIII-800 @900 i440BX, Tualeron 1.2 @1.6 i815, Celeron 2.6 330J @4.0 i915*
May 11, 2005 12:54:31 PM

That is because socket775 CPU's are prescott base and the majority of socket478 are northwood based (with the exeption of the late willamettes and early prescotts which were both pretty pants overclockers).
May 11, 2005 12:59:23 PM

What I meant was that the exact same core (ie: Celeron D 2.6 D0) tends to overclock better on s775 then on s478.

*Dual PIII-800 @900 i440BX, Tualeron 1.2 @1.6 i815, Celeron 2.6 330J @4.0 i915*
May 14, 2005 10:35:12 AM

Oh i see, I wonder why that is.
May 15, 2005 2:13:59 AM

The S775 probably has a better voltage regulation unit than most S478 boards. As far as I know, that ASUS board probably isn't too geared towards high power consumption procs anyways. The D0s are definitely better o/cers than the C0s though. I had a 2.66GHz Celeron D C0 stepper and it barely did 3.4GHz with an XP-90 while I see D0 stepping Celeron Ds doing 3.6-3.8GHz aircooled... :frown:

<A HREF="http://nfiniti.blogspot.com" target="_new">nfiniti plus one</A>
May 16, 2005 5:36:51 AM

Just a little question, can that 4G celeron beat a 1.4Ghz Dothan?
May 16, 2005 1:48:12 PM

I don't have a comparable Dothan system to test it against.

Would the Dothan be overclocked?

I would imagine an overclocked Dothan would win some benchmarks, and the Celeron would win others. IMHO the main problem is the lack of a decent chipset for Dothan. I don't mind the i855 but currently it's only paired with a cut down version of ICH4 - using the Asus adaptor you can get full ICH5(R) fuctionality but I'd like to see an ICH6 if not a ICH7 on a Dothan board.

I went with the Celeron because I wanted some of the features ICH6 brought to the table. This is actually my file server, and spends most of its time at stock speeds. <A HREF="http://img167.echo.cx/img167/8290/hdtachf0jf.gif" target="_new">http://img167.echo.cx/img167/8290/hdtachf0jf.gif&lt;/A>

Non overclocked I don't think a Dothan could make up the nearly threefold difference in clockspeed, even with its P6 roots.

*Dual PIII-800 @900 i440BX, Tualeron 1.2 @1.6 i815, Celeron 2.6 330J @4.0 i915*
May 16, 2005 3:10:37 PM

Non-overclocked i mean, the new i915M Avioso chipset is really nice BTW, I don't know i should do some benchies with the dothan and see how well it stacks up at 1.4Ghz
May 16, 2005 8:12:31 PM

For the most part, the Dothan would lose. Actually probably for almost everything the Dothan would be on the short end.

<A HREF="http://nfiniti.blogspot.com" target="_new">nfiniti plus one - my blog</A>
May 16, 2005 8:37:22 PM

You guys seems convinced about that, i really should buy a dothan system already, get a waterblock on and start overclocking. Most people say just on their notebook with a simple bios change, they have hit 2.4Ghz with the notebook cooling.
May 16, 2005 11:09:31 PM

I thought we were talkign about the Dothan at stock versus a 4GHz Celeron D...

Yes, the Dothan's can clock very well. Quite a few people I've read about have done a 1.6Ghz 400MHz FSB Dothan to 2.13GHz 533MHz FSB using the BSEL pin mod.

<A HREF="http://nfiniti.blogspot.com" target="_new">nfiniti plus one - my blog</A>
May 16, 2005 11:46:57 PM

Those are such efficient chips, i hope Intel stops being douches and release Yonah soon.
May 17, 2005 1:33:22 AM

I hope Intel stops being douches and releases the damn desktop version with no power consumption cap. That's what I'd really like to see.

<A HREF="http://nfiniti.blogspot.com" target="_new">nfiniti plus one - my blog</A>
May 17, 2005 1:45:27 AM

yeah seriously, did you see the power consumption on the new intel dual cores? it was like 200+ watts.
May 17, 2005 9:59:21 PM

And with a dual core merom/conroe it's probably gonna be like 60W. :tongue:

<A HREF="http://nfiniti.blogspot.com" target="_new">nfiniti plus one - my blog</A>
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