could u help on overclocked 800EB?

[o770]

hello.
r 40ºC for an 800EB overclocked to 870MHz any good?
i have one noisy FOP38 and it was installed with some (silicon i guess, one of the most cheap) thermal paste. its running with 1.75V cuz BIOS and Sandra monitors showed it couldnt reach 1.70V when set to that, also all other voltages was lower. is that a good way to set the voltage when overclocking? its very stable even at the most critical burn-in tests.
should i expect lower CPU temp with the FOP38 and 870MHz of external frequency?
thanks for the attention.

[6502kid]

Otto.

I would recommend trying things with the voltage left at 1.65

Mine seems to run fine at default voltage at 133, 140 or 150fsb.

Playing with the various ram timming settings appeared to be
the main item I had to tweak.

Sometimes I think people are way too eager to crank the voltage
up, when that aint the problem in the first place.

Maybe I got lucky with my chip, but I figure why crank up the heat
any higher unless you are sure that will help....

[Mr B]

If you've got sufficiently adequate cooling, 1.85v for that chip should be fine. That's a pretty high temp for 1.75v though. I'm running a 600E (same 6x multi as the 800EB) at 954 MHz, and my temps never hit 40c under load. How much thermal compound did you use, and do you think the hsf is sitting level on the cpu die?

Does it run this hot constantly, or is this something that has gradually built up over time? Mine runs 3 to 5c cooler than that, and I'm pushing 1.95v thru it....

Mr B

[o770]

yes im a bit disappointed with that. have changed the intel retail hsf for the FOP38 and got also another better and roomer case, was very very careful on planning air flow inside it when installing everything.. i got a reduction of a few more than 10 degrees (ºC) for the CPU and mobo temp kept almost the same. im wondering about the lack of an exhaust cooler to be the main problem now. there r several little holes in the back panel but theres actually no exhausting device other than the PSU fan.

yes. have applied two thin coats of the thermal paste, one upper the CPU other on the heatsink base - it seems to be pretty well sat. 40ºC is the higher temp it ever reaches.
the most low voltage i can set is 1.70V for VCore - is it reasonable to increase it if monitors show the voltages under specs? CPU was supposed to work with 1.70V but setting it for 1.70 monitors show it keeps lower than that.
about the case, could an exhausting fan help on lowering CPU temp?
thanks.

[DocClock aka MadClocker]

You could make sure that your power supply fan is set to push air out the back instead of sucking it in...JUST make sure you unplug the power supply first before trying to take apart the supply.
Most fans have two arrows on one side of the fan housing to indicate airflow direction, and just make sure it points out the back, this will help if it hasn't been done already. If you look in the lower front of your case, there might be a plastic fan holder, and you could add a fan there.
40c is kinda high for an overclocked chip, but I say if it ain't broke, don't fix it...you seem to have it running stable, and if so, then I wouldn't worry too much.
I forgot to mention that putting thermal compound on both surfaces might be detrimental to the cause...I usualy put thermal compound on the cpu only..this might account for your high temps...but remember that it is summer, and your ambient temps will effect your ability to cool the inside also.
Many are clocking down their chips for the summer, because of heat issues...out here in the big valley of cal, it gets quite hot here...the last three days were 100f or above, and we are just getting warmed up...and so is our cpu's it can easily get to 105 to 110deg faranheight here, so I might have to clock down a couple of systems I have...I am already experiencing heat probs and will be working to NOT have to clock down..(I hate to go backwards)

[6502kid]

Thats strange that you cant set it lower than 1.7v

I thought 1.65 was the default voltage for the 800EB.

Mine seems to like it. Has the voltage changed with
stepping ? Mine is a Cb0

[o770]

ok. its installed a case fan and the PSU one is sucking air out the power supply room, thats how it cam installed. i thought on remove the PSU inside back panel or at least to enlarge its holes; i thought about to change its fan for another stronger one. once my case has no exhauster fan do u think that could help on sucking out the hot air? wouldnt the PSU components blow in even more hot air??
my bios settings have no option available to choose 1.65V for VCore.

what im mostly wondering about, is it ok to adjust the voltages using voltage monitors? as i said above, if monitors show the voltages below the specs is it reasonable to increase VCore value to work with 1.70V?

[Mr B]

oTTO (May 24, 2001 08:16 p.m.):
ok. its installed a case fan and the PSU one is sucking air out the power supply room, thats how it cam installed. i thought on remove the PSU inside back panel or at least to enlarge its holes; i thought about to change its fan for another stronger one. once my case has no exhauster fan do u think that could help on sucking out the hot air? wouldnt the PSU components blow in even more hot air??
my bios settings have no option available to choose 1.65V for VCore.

what im mostly wondering about, is it ok to adjust the voltages using voltage monitors? as i said above, if monitors show the voltages below the specs is it reasonable to increase VCore value to work with 1.70V?

Get a hold of one of those "slot type" fans (it mounts on an open expansion card opening in the back of the case) CompUSA has them for around $15 or so....I got mine cheaper thru e-BAY, but where you could use it NOW, as opposed to waiting for shipping......

Mine pushes 42 CFM of air out the back...I mounted it next to the Herc. 3D Prophet II MX...acts kinda like a fan for the card at the same time, sucking heat away from the GPU chipset sink (until I can get a Blorb). Great product, these fans....

Mr B

[o770]

ok. i thought on that fans, im concerned about noise now. will try look for one and check how much noisy it is. when i first thought on them the problem was the ability to suck all the hot air stuck at the upper portion of the case, now i got the FOP38 anything noisier is really a problem.
thanks for the advices.