Overclocking my P3 800e

[#3# RIP]

Hi everyone
I love to tweak my computer and spent the last couple months reading posts on here before I attempted it myself.

1---> 8x105--1.65v---MB temp-33c--CPU-33c--Load--42c
2---> 8x110--1.65v---No change on temps
3---> 8x112--1.65v---Under a load hit 43c
4---> 8x115--1.65v---No change on temps
5---> 8x120--1.75v---Up till now everything I did was a no brainer. Heres where I learned something. In order to achieve 8x120 I had to up my core to 1.75v, (here's was learning part) Evidently running my Micron memory @
cas 2-2-2 wont work at these higher bus speeds. Another point of interest for me was my CPU temps went no higher....33c(idle)---42-43c(under full load).My apartment is very warm sometimes but when I am able to bring the MB temps down the CPU does a little better(obviously). I am new to this and was wondering if I missed anything? My system specs are in my signature...Thanx

[Mr B]

#3# RIP (Apr 15, 2001 08:07 a.m.):
Hi everyone
I love to tweak my computer and spent the last couple months reading posts on here before I attempted it myself.

1---> 8x105--1.65v---MB temp-33c--CPU-33c--Load--42c
2---> 8x110--1.65v---No change on temps
3---> 8x112--1.65v---Under a load hit 43c
4---> 8x115--1.65v---No change on temps
5---> 8x120--1.75v---Up till now everything I did was a no brainer. Heres where I learned something. In order to achieve 8x120 I had to up my core to 1.75v, (here's was learning part) Evidently running my Micron memory @
cas 2-2-2 wont work at these higher bus speeds. Another point of interest for me was my CPU temps went no higher....33c(idle)---42-43c(under full load).My apartment is very warm sometimes but when I am able to bring the MB temps down the CPU does a little better(obviously). I am new to this and was wondering if I missed anything? My system specs are in my signature...Thanx

It's refreshing to see someone who's researched things BEFORE diving in.

Those temps seem a bit high. Both my Celeron and P/// usualy max out between your idle and load temps.

First thing I'd do is to try to drop those temps a bit. Have/did you;

1) lap the hs and or cpu?
2) use Artic Silver thermal compound?
3) what do you have for a case fan arrangement?
4) what fan is on the hsf now?

If you can get the temps down a bit, then we can bump up the vcore a bit more, which I think is the other key to the situation. 1.8/1.85v might get you a Gig. Temps first though. With the added vcore, those temps are going to go up slightly higher. A lot of people notice these chips getting a bit "flaky" around 45c, and you are close to that now.

See if you can "borrow" some PC133...that could be it, as well. I've got a stick of generic PC100 that will run up to about 133. 120 might be too much for yours, though.

Mr B

[#3# RIP]

It's refreshing to see someone who's researched things BEFORE diving in.

Those temps seem a bit high. Both my Celeron and P/// usualy max out between your idle and load temps.

First thing I'd do is to try to drop those temps a bit. Have/did you;

1) lap the hs and or cpu?
2) use Artic Silver thermal compound?
3) what do you have for a case fan arrangement?
4) what fan is on the hsf now?

If you can get the temps down a bit, then we can bump up the vcore a bit more, which I think is the other key to the situation. 1.8/1.85v might get you a Gig. Temps first though. With the added vcore, those temps are going to go up slightly higher. A lot of people notice these chips getting a bit "flaky" around 45c, and you are close to that now.

See if you can "borrow" some PC133...that could be it, as well. I've got a stick of generic PC100 that will run up to about 133. 120 might be too much for yours, though.

Mr B




Thanx

1) What is lap your HS or CPU??
2) Arctic Silver......Done
3) Case arrangement not up to snuff. I have 3 fans one pushing out two pulling in. When the side of my case is removed I see the kind of temp range you mentioned. 24c (Idle)----35c (Full)
4) My CPU fan is a VOS32 with two 60 x 25mm fans. The fans are Global Win
5) The Ram i can do. I was looking some Mushkin 133 2-2-2 rev 3. I wonder if it would be better to go for some 150?

[Mr B]

"Lapping" the hsf and cpu refers to sanding with extremely fine sandpaper the mating surfaces to get them as close to perfectly flat as possible.

Any scratches on the surface of the sink where the cpu die sits will cause an air pocket, which in turn, will raise temps. The A.S. fills in those scratches, but if there aren't any to begin with, and the two surfaces are perfectly flat.....

I "lapped" a Gorb I used to have on a Celeron 600, lapped the cpu as well. Temps dropped around 4c by doing this. There's a lot of good info on the front page regarding this, in the "Tips and Techniques".

Some people don't recommend lapping the cpu itself. If done very lightly, and very carefully (key word VERY) it can help.

Case fans.....ok, this will help you NOW. Case cooling works best when you have equal or more EXAUST fans. More intake fans pressurize the case, and the air heats up before it can be exausted. There's an old car analogy I usualy use where if you put a bigger carb and high rise intake on an old Camaro, but leave the wimpy stock exaust on, you won't see the increase in power because of backpressure from the small exaust pipes and muffler. Works the same for case cooling. The faster you can get the hot air out, the faster the cool air can go in. Turn one of those fans around to exhaust, and I bet your case temps drop immediately.

Try that PC133, and see if that helps out too. I've never had PC150, but the PC133 I've got now runs fine at 159 FSB. (really good generic stuff?!?)

Start with turning around a fan, and look into lapping the hsf. Also read thru the posts in the "Cooling" topic here in the forum. Lots of posts in the past on "how to" lap the sink and/or cpu.

Mr B

[[OC]_SR20DE]

while your case side(s) is open, take a house hold fan and blow at it. that will help bring the temp down even more for right now.

I had mushkin PC150's before and after I tried the Mushkin PC133 Rev3's, they allowed me to overclock more stable and farther@ cas222.(strange aint it)

[*spazzed*]

Mr. B.......this isn't related to o/cing, but is that why catback exhaust systems are popular??lol

[Mr B]

spazzed86 (Apr 15, 2001 12:36 p.m.):
Mr. B.......this isn't related to o/cing, but is that why catback exhaust systems are popular??lol

Precisely...that's why the parts stores sell so many "Turbo" mufflers to all the gearheads....less backpressure.

Mr B