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View Full Version : [SOLVED] Newbie help: I overclocked T-Bird 900 and A7V to 1GH, but did I do it properly?


Slowpoke
04-14-01, 12:54 AM
Here's how I did it. First off, I didn't even touch the CPU and unlock the multiplier thingymajig with the pencil connecting the L1 bridge. Instead, I set the motherboard from JumperFree to Jumper Mode. Then I set the BUS Frequency Multiple to 10.0(10/1) using the DIP switches, according to the manual on page 23. I set the CPU Extenal Frequency Selection to CPU 100.00 MHz and PCI 33.57, according to page 22 (I assuming this refers to the PCI stuff running 1/3 the speed of the bus). Now, by changing the BUS Frequency Multiple to 10.0, did I in fact change the multiplier? Now I'm confused. Anyhow, I also upped the I/O Voltage Setting (p.21) from the default 3.56 Volt to 3.69. I read people increasing their voltage from like 1.75 to 1.80, etc. but where the heck in the BIOS can I do that? Currently, I've updated my BIOS to the most recent 1007. I downloaded WCPUID and got this information:

Internal Clock: 998.69
System Bus: 221.93
System Clock: 110.97
Multiplier: 9.0.

I've played UT for about an hour, looped the 3DMark 2001 three times and no crashes. Everything seems stable, but I'm wondering I actually overclocke the thing properly or am I setting myself up for a nasty surprise with those changes I made to the motherboard. Thanks in advance for any advice.

Nagorak
04-14-01, 02:11 AM
Your CPU really should ignore the multiplier changes unless it has been unlocked. Maybe it was already unlocked (a few Tbirds were sold unlocked).

Go to h-oda.com (http://www.h-oda.com) and download WCPUID. It will tell you how fast your processor is really running at.

Slowpoke
04-14-01, 02:26 AM
I'm using wcupid - that's how I got those info at the bottom of my post.

Nagorak
04-14-01, 02:31 AM
Should have paid more attention to your post. You overclocked by increasing the motherboard's bus speed. That's fine, just don't push it too much beyond what you have it at. You might want to make sure it really is stable at 110 MHz, because I never could get my A7Vs to be stable even as high as 105 MHz...

Now you need to unlock the chip and bump up the multiplier for some serious increases in speed. It might be wise to try to use the largest multiplier you can get the chip stable to, and then tweak a few more MHz out of it by increasing the FSB. KT133 boards can't go much beyond 110 MHz anyway, so it can't get you too far. It can give you a few extra MHz though after the multiplier has been exhausted.

Slowpoke
04-14-01, 03:13 PM
Nagorak, thanks for the input. I decided to do unlock the multiplier with the pencil. It's running at 9.5x107=1017 Mhz, using 1.60 volts. I'm using the Golden Orb which probably isn't the best, but I'm so far happy with the results. Ran 3dmark2001 10 times in a row with no lockup. BTW, my score is 2815 with a Geforce 2 64 MB, up from 2650 at default 900 speed. Using 6.50 Detonators. Damn, I need a Geforce 3.

kat
04-14-01, 09:55 PM
watch out !! that gorb is a bird killer and i believe its designed for an intel chip which has a lower profile you might be puting to much pressure on the die ;D