Hi, I'm from Argentina and I'm trying to get back to OverClock. In the past I overclocked Cyrix PR300, Intel Pentium1, AMD K6-2, etc. Now, I have an ECS K7S5A Pro rev. 5 with Honey-X bios upgraded. A Duron 1300 with Titan cooler and a Specteck PC-333 256 mb.

I wanna know how can I overclock this, the limits and please a very fast introduction to overclock in this mothers without jumpers. Thanksss.

I don't know about the pro version you have but I had the original K7S5A myself.

Checkin your bios if you're able to change the FSB in small steps in your bios. If you can raise it by about 5MHz and run a benchmark like 3DMark 2001 or 3DMark 03 to see if it's still stable. If it is raise it another 5MHz and so on.
You PCI clock is 1/3 of the FSb and it shouldn't go above 37,5MHz. If the bios allow it change the divider if you reach this area or even better would be a pci lock which would keep the pci at 33,33MHz at all times.
If you encounter graphic errors in the benchmark the cpu gets unstable. If you can try to raise the FSB one step and check again. Just don't go too high becasue the more power the cpu gets the hotter it will become and finally die!

With my original K7S5A I never had that option. It was a present from someone who upgraded his system and had a Athlon TBird 750MHz on it. As I didn't really needed it I just tried to raise the FSB from 100 to 133MHz in one step and I was lucky. The Athlon still works totally stable with 1GHz for well over a year now.
As your Duron should be based on 100MHz too you should be able to try that too but be aware that this may damage or destroy your CPU if you're bad on luck.
I see a problem there because the 1,3GHz Duron is the last one with the Morgan core so it may be around the maximal possible speed already!

I hope that helps a bit!
All this will be on your own risk so good luck!

Hi, thanx for asking... the problem that I'm having is I can't change the FSB as I want. I downloaded a few bios like Cheepo or Honey-X and that unlocked some frequencies. I tryed a few ones and this is what I get:

107/107 Works (1400 Mhz)
112/112 Works (1467 Mhz)
124/124 Not working
110/110 Works (1450 Mhz)
100/133 Works (1333 Mhz)
133/100 Not working
110/147 Works (1450 Mhz)
133/166 Not working
138/138 Not working

Some of that frequencies are not stable and crashes sometimes with the Cheepo bios. The CPU temperature working at 1450 Mhz are between 48º and 49º C

If someone sees anything that I should know please let me know. Sorry I'm a really bad english writer xD

With 124MHz FSB it's definately a PCI clock problem because between 100 and up to just below 133MHz the PCI clock is normally calculated by dividing the FSB by 3. Around 133MHz it will switch to 4. This means at 124MHz FSB you get a PCI clock of 41,33MHz and your PCI parts will never work at that. The maximal PCI setting to run more or less safely is up to 37,5MHz so with the 112MHz FSB you're quite near there with 37,3MHz. Abouv you would be quite lucky if it still worked.

133/100 will not work because you're running the ram below the FSB. Even it it worked you shouldn't do that.
With 133MHz FSB you would be running the Duron at 1729MHz (13x133MHz) anyway and I think that is a bit too much for that one. If that Duron Morgan core would be able AMD would have sold a 1,4 to 1,6GHz model of them! ;)

Are you able to get 112MHz FSB with a ram clock of about 149MHz ???
That might be that fastest possible for you. The only problem is if it's really faster than 112/112MHz because the asynchronous clock also eats some of the additional performance. Check it out with a benchmark program or if you don't get that setting try 112/112 and 110/147 to see which is faster!

BTW:
Are you able to change the Multiplier or know how to unlock it ?
You might be able to reach real 133MHz FSB and 166MHz Ram by lowering that Multiplier to 12 or 11!

Well... after a few bios resets, I think I have found my FSB. I'm using 107/107/36 (36 is the PCI) and I get 1400 Mhz, nothing, but more than 1300. Using 110/110/37, 112/112/34 and 110/147 the system halts when I run Winning Eleven 8 or GTA: San Andreas. The temp is not a problem, now running at 1400 Mhz is 43º and the chipset is 28º. When I benchmarked fastest config was 110/110 using Honey-X bios (3.301 MWIPS, 4.289 MDIPS at 1432 Mhz) but the system halted a lot of times. So, I finally decided to use 107/107/36 with a new bios that I found on Inet (http://p199.ezboard.com/fk7s5amotherboardforumfrm6.showMessage?topicID=1118.topic)
and the results was 2.172 MWIPS, 4147 MDIPS at 1393 Mhz. Using this config the system is perfectly working, no halts, no high temps, nothing.

I never was able to modify the multiplier, but using this bios there is an option "CPU Auto Config" or something like that enabled, but when I tryed to change it wasn't able. Maybe there is a way to unlock it, I don't know. Thanks a lot for your help. Matias.

Another link to the file: http://members.home.nl/jsruisch/BIOS%20ROM%20IMAGES/K7S5A900.rar

I never got much past your numbers on my Duron1300 sitting in a MSI K7T Turbo 2 either...don't worry about it. The motherboard and the cpu are both holding you back. As I recall, 108 or 109 Mhz was the best I could do and keep it stable. My favorite setting was 104Mhz and undervolted to 1.650v to keep it running cooler.

That said, even a 100Mhz oc does a great job of waking up most Morgan core systems and they will still serve as a solid rig today. Mine walked all over 2.0/2.2Gig celerons and most P4's under 2.0Ghz...I had some really irritated neighbors who spent more and got less. I think I paid 109 bucks for the motherboard/processor combo when I bought it about 4 years ago. That combo was an awful lot of bang for the buck then and I never looked back. The board is still running with a 2400+ slightly oc'd to 2133Mhz 2600+ specs; and, I gave the Duron1300 to a guy in Canada.

Use it, enjoy it, and pass the rig on to someone who needs a solid system when you're done with it.

Ya did good.

Skip

" I gave the Duron1300 to a guy in Canada." jajajaja nice jajaja

Thanx for the data