First Athlon OC - Tech Support Forums

**EvilRick** · May 2nd, 2002, 03:10 AM

Here are my first OC settings.

Athlon Thunderbird 1.2GHz
KT7-RAID
256MB PC133 Samsung
WD 20GB HDD
32MB ATi RageFury Pro 4X
SoundBlaster Live!
Pioneer 16X DVD
Yamaha 20X10X40X CDRW

**EvilRick** · May 2nd, 2002, 03:21 AM

2nd attempt. Gonna leave it like this for awhile.

**EvilRick** · May 2nd, 2002, 03:24 AM

Forgot the pic.

KenKun · May 2nd, 2002, 03:25 AM

Good job ER

You should keep an eye on your temps ... the older athlons run pretty hot and hot weather in here already .. so take care ...

Regards

**EvilRick** · May 2nd, 2002, 03:26 PM

Funny you should mention that. I'm having to run with case off for now. Need to move insides to different case. The HSF is just about 3/4" from the power supply so not enough air flow. With the case on and watching a DVD, there is so much heat generated the box reboots about 3/4 way through the movie.

One thing I thought was odd, the BIOS is showing that it's a "Mobile Athlon". Strange I think.

Now it's at 1400 (12.5X112). I had it at 1500 (12.5X120). It would get to the "welcome" screen in XP then lock up. I pushed the v's up to 1.65, but want to move it to a machine with more fans for cooling. Do they even make a 1.5GHz Thunderbird? I didn't think so!

If/ when it's stable, I'll post a shot.

**EvilRick** · May 2nd, 2002, 10:08 PM

Okay, I got it up to 1.5GHz but can't keep it running stable. It'll get to XP, I can start WCPUID and open up Paint. After I copy the image in and go to do "Save as..." it locks up.

I'm sitting @ 1.425GHz now, but I want the 1.5GHz.

Am I correct in changing the VCore up to try to gain stability, and, does uping the I/O help as well?

I had them set @ 1.65 and 3.4 to get the 1.5GHz where it was.

Help is much appreciated!

samwichse · May 2nd, 2002, 10:25 PM

I was under the impression that the stock voltage for that processor was 1.75V anyways... probably won't hurt to put it up to at least that

.

**EvilRick** · May 2nd, 2002, 10:52 PM

Hmmm...odd, the "default" setting is 1.55vdc. I will bump it up to that and see what happens. Seems the higher the core the more stable anyway.

jmichna · May 3rd, 2002, 05:31 PM

Quote:

Originally posted by EvilRick
Hmmm...odd, the "default" setting is 1.55vdc. I will bump it up to that and see what happens. Seems the higher the core the more stable anyway.

Be carefull... is it possible that you really have a "mobile cpu" and if so, did they run at lower vcores? The standard TBird runs at 1.75vcore default (my OC'ed one is at 1.80vcore). Also, remember, for a DC-powered device, the heat produced goes up by the square of the voltage e.g.,
overclocked heat (watts) = (stock heat output, watts)X(OC'd speed/stock speed)X(OC'd vcore/stock vcore)^2.

My 1.2gHz TBird running stock conditions puts out about 65 watts; with it overclocked to 1.4gHz at 1.8vcore, I'm putting out about 82.5 watts of heat. Just recommending to keep your cooling capacity in mind.
jmichna

**EvilRick** · June 23rd, 2002, 01:49 AM

Got it running STABLE at 1.5GHz!!!

I used a Dremel and cut a couple of holes in the back under the PSU beside the connector back plane. Had two small fans from two old PS/2 PSU's, they worked great.

I'm going to borrow a digi cam from a buddy on Monday to post BIOS pics. (For those of you that think I could actually use Photoshop to alter my screen shot

)

And yes jmichna, it is an Athlon Mobile 4. I've got the VCore sitting at 1.600 and left the I/O at 3.30 (default).

I will be putting it throgh it's paces to make sure it stays STABLE.