FWIW KG7 / AMD 761 was a tough animal to tame.

- CPU limit - apparently a 1333's limit is a rather unimpressing (at least to me) 1.5GHz. The one thing that helped a lot on my T-Bird is the multi being "Free Bird".
- stability - seems to take a nuclear reactor type voltage to stay stable. Mind you - I was having the CPU at 1.85V (the utmost high the BIOS allows me to run on it), RAM at 3V (yes, DDR at a whoopin' 3v!!!!!!) and the I/O voltage at 3.65v. Despite all this, it took me several tries until I could get a stable 3DM01 run.
- GPU - not really sure what was going on here because everything I knew with the ST6 overclocking went totally OUT THE WINDOWWWW - with i815 I at least knew that nVidia doesn't care about AGP overclock while Radeons are highly fussy about it. The COMPLETE OPPOSITE has happened here - I could not get a single nVidia card, from as old as Ti4200 to as new as 7800GS (G70), to even run stable. Dropped a 9800XT, a 9800 Pro and even a X850XT, and the further I went in generations the stable it'd get (with X850 being THE most stable out there.), which can be seen above with the X850 scoring about 10k @ 1.5GHz.

I spent at least 4 hours total on that (including figuring whether I was doing something wrong or not!) and figured the 761 is just that quirky. But hey, at least I can brag about having a less common chipset among a sea of nForces 🤣

I feel you. Just played a little with my K7S8X and a poor XP2400 Thoroughbred-B - Had two different approaches: One with stock multiplier and just FSB + voltage and one with multiplier lowered to 11x.

First the 150MHz FSB run..

Then the 189MHz FSB run..

Something feels off here.. I can see a very hard frame-drop at 3DMark01 car chase, the time the robots shoot their lasers I get a drop down to 8 (!!!) FPS on high and 38 FPS on low. Changing the driver version did not change anything. I did not run with a different card so far.. Next try would probably be a X800GTO - but I think I tried that 2 days ago and the dips were the same.

Anyone else having the same? The score appears little low to me from the gut.

I haven't checked with my Bartons yet..

That’s very similar to the behaviour my attempt to run above 233fsb went. For the most part it seemed correct, but the occasional “blip” in framerate, far below expected framerate dragged the average well below where it should have been.

Case in point the first scene of “Nature” I was expecting framerates to fluctuate between 320 and 340 but had a half second or so blip down to the high 100s at 234fsb that simply wasn’t present at 233fsb.

You should get Athlon XP 2500+ Barton (333FSB, AXDA2500DKV4D) with 11x multi and run it at 400 FSB to reach 2200Mhz. Then see if it runs at 420-440FSB.

If you want higher OC, you get AMD Athlon XP 2600+ Barton (333FSB, AXDA2600DKV4D) with 11.5multi. You get 2.3Ghz at 400 FSB.

Athlon XP 3000+ Barton is the best silicon, but only useful if you want to do world records. More of collector's item.

Beware that TDP is dependent exponentially on voltage and linearly on frequency. You can easily exceed it by 50%.

AlexZ wrote on Yesterday, 14:51:

You should get Athlon XP 2500+ Barton (333FSB, AXDA2500DKV4D) with 11x multi and run it at 400 FSB to reach 2200Mhz. Then see i […]
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You should get Athlon XP 2500+ Barton (333FSB, AXDA2500DKV4D) with 11x multi and run it at 400 FSB to reach 2200Mhz. Then see if it runs at 420-440FSB.

If you want higher OC, you get AMD Athlon XP 2600+ Barton (333FSB, AXDA2600DKV4D) with 11.5multi. You get 2.3Ghz at 400 FSB.

Athlon XP 3000+ Barton is the best silicon, but only useful if you want to do world records. More of collector's item.

Beware that TDP is dependent exponentially on voltage and linearly on frequency. You can easily exceed it by 50%.

Don't mind the voltage etc. The setup will be watercooled soon enough. I have a barton 2800, 3000 and 3200 in the lab, just started with the 2400 to test the setup.

Scores are updated and brakets for different cores added. Dont for get guys with dual socket motherboards can play along with cpumark 99.

Well my X1950XT is 100% dead so no attempts with that, but I do have an X1950PRO that works. Going to give that a whirl and see what difference (if any) it makes. At stock clocks the Radeon should be slightly faster, but the 7900GS was quite a good overclocker, so I’m not so sure it will be anything other than a side-grade.

tehsiggi wrote on Yesterday, 13:50:

I feel you. Just played a little with my K7S8X and a poor XP2400 Thoroughbred-B - Had two different approaches: One with stock multiplier and just FSB + voltage and one with multiplier lowered to 11x.

I am not sure if you know it, Asrock did release some "performance beta" BIOSes for the K7S8X boards (look at the "a" in the name). They should be a lot faster then the default BIOSes. Plus, more settings to tweak in BIOS.
Main difference are the faster romsips in the "A" BIOSes.

_digitalbath wrote on Today, 06:15:

tehsiggi wrote on Yesterday, 13:50:

I feel you. Just played a little with my K7S8X and a poor XP2400 Thoroughbred-B - Had two different approaches: One with stock multiplier and just FSB + voltage and one with multiplier lowered to 11x.

I am not sure if you know it, Asrock did release some "performance beta" BIOSes for the K7S8X boards (look at the "a" in the name). They should be a lot faster then the default BIOSes. Plus, more settings to tweak in BIOS.
Main difference are the faster romsips in the "A" BIOSes.

Currently running Cool!Bios 2.52 as it allows me to properly configure the memory timings. I did run Cool!Bios 2.20a (based on the 2.20a performance bios from ASRock) but that just behaved the same way.
Also switched to a different version of the AGP driver for the SIS chipset. Same same..

I didn't like the cool BIOSes. I am not sure anymore why. Probably troubles with using mobile CPUs or simmilar. I know there was an issue. I forgot.
Anyways, the 252a BIOS does a good job.
Are you able to test an another GPU? My guess is, SIS doesn't like the bridge chip on the graphicscard.

_digitalbath wrote on Today, 07:44:

I didn't like the cool BIOSes. I am not sure anymore why. Probably troubles with using mobile CPUs or simmilar. I know there was an issue. I forgot.
Anyways, the 252a BIOS does a good job.
Are you able to test an another GPU? My guess is, SIS doesn't like the bridge chip on the graphicscard.

I'll give the X800GTO a spin. Have a couple of 9800s and 9700s as well. Might even drop in a GeForce 6800XT or 7600GS. Currently time is my limiting factor.

I'll also swap a few bios versions when i get to it, same for CPUs.