Upgrade AMD-K6 233MHz to AMD K6-3 400+MHz ? - Advice req.

Don't ask how to over-clock.
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HeraclesMk
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Posts: 11
Joined: Sat May 04, 2002 11:43 pm
Location: Amsterdam

Hello (again) friends. :)

I want to upgrade my CPU without changing mobo.

I want to replace my AMD K6 233MHz to a faster AMD K6-3 450MHz.
I don't know what's the maximum CPU speed I could get away with, considering my mobo is a few years behind, but I read that 400 or 450MHz is not impossible.

I just need some hand holding...

Specs:

Mobo Mfg : ASUS TX97-XE
BIOS Mfg : Award Modular BIOS v4.51PG
BIOS ID : 11/24/98-82430TX-TX97-XE_C-00
BIOS OEM Signon : #401A0-0112xe-1
Chipset : Intel Triton 430TX rev 1

On the mobo, I have jumpers to set the "CPU External Frequency":
- 50, 55, 60, 66 or 75MHz

I also have jumpers to set the "CPU Bus Frequency Ratio"

- Intel Pentium P54C 1.5x (3/2) 2.0x (2/1) 2.5x (5/2) 3.0x (3/1)
- Pentium P55C-MMX 3.5x (7/2) 2.0x (2/1) 2.5x (5/2) 3.0x (3/1)
- AMD K5, K6 3.0x (3/1) 2.0x (2/1) 1.0x (1/1)
- IBM/Cyrix 6x86(L)(M1) 3.0x (3/1) 2.0x /2/1) 2.0x (2/1)
- IBM/Cyrix 6x86MX(M2) 4.0x (4/1) 4.5x (9/2)

And lastly, jumpers to set "Voltage Regulator Output"
- 1.8V, 1.9V, 2.1V, 2.5V, 2.7V, 2.8V, 2.9V, 3.2V, 3.4V or 3.5V


Also, where could I get such an AMD K6-3 (new or used) on the net or in Holland?


Any help would be appreciated.

Thanks!
Mark T.
=====
HeraclesMk901237@yahoo.com
(to contact me, subtract numbers from email)
georgep
BIOS Rookie
Posts: 39
Joined: Sat May 11, 2002 10:07 pm

You should be able to run a K6-x/K6-x+ CPU from 400 to 500 MHz. I am curently running a K6-3+450 at 500. Jan Steunebrink has a patched BIOS that displays correct CPU frequencies above 400 MHz and allows recognition of K6-2+ and K6-3+ CPUs. http://web.inter.nl.net/hcc/J.Steunebrink/k6plus.htm

As to where to find them in Europe...no idea.

There used to be a page devoted to the TX97-XE with all kinds of good info, at http://home.worldonline.dk/Ken69/Pages/ASUS-TX97.html but that site has been gone for a couple weeks.
HeraclesMk
New visitors - please read the rules.
Posts: 11
Joined: Sat May 04, 2002 11:43 pm
Location: Amsterdam

Hi guys.

Thanks for the help. I've been doing some independent research, and found this nifty site listing all possible jumper permutations for CPU frequency, Bus frequency and core voltage:

http://www.lairdslair.com/TX97E.shtml


What I have to do is change the bus jumper to 75 MHz and see if my CPU overheats or my system freaks out. If not, I can use a 450 MHz CPU, otherwise a 400 MHz.

I discovered it's possible to kick the mobo in overdrive (83 MHz, undocumented) and use a 500 MHz CPU -- which supports GeorgeP --, but many have tried and apparently the system becomes too unstable. So I'll have to try it to see...

I'm optomistic about an upgrade to 450 MHz, but pessimistic about a 500 MHz (but hey, if it works...).

Thanks again.
Mark T.
=====
HeraclesMk901237@yahoo.com
(to contact me, subtract numbers from email)
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