Amd K6-2 300

[ChRoNiC]

Hey everyone

I have a K6-2 300Mhz cpu. I decided that it was time to o/c it. Well, I got it up to about 414Mhz, (83x5), and voltage to 2.8. Well, from what I have been reading... some people seem to think o/cing a AMD 300 even close to 400 will not make it run stable. Mine is running great... I also have 2 extra case fans installed, but stock heatsink/fan. Im thinking about trying to push it even higher... maybe up to 5.5x100, but I dunno. Tell me what u all think.

ChRoNiC

[flounder43]

You won't know until you try it...That isn't a spendy cpu, so I say go for it!

[Staz]

I think I remember reading an article on overclockin a K6-2. They removed the aluminium cover from the CPU and went with an aftermarket cooler and thermal compound to squeeze a few more MHz out of it

[Sushiman]

watch your voltage... You increase the VIO too high and the cpu goes dead. Its weird because the voltage setting below that will work fine ... and then the next one kills it. (ive killed many k6-2's) but go for it... i got my 500 to 690 (it died at the next VIO setting)

good luck

[eobard]

Originally posted by ChRoNiC
Hey everyone

I have a K6-2 300Mhz cpu. I decided that it was time to o/c it. Well, I got it up to about 414Mhz, (83x5), and voltage to 2.8. Well, from what I have been reading... some people seem to think o/cing a AMD 300 even close to 400 will not make it run stable. Mine is running great... I also have 2 extra case fans installed, but stock heatsink/fan. Im thinking about trying to push it even higher... maybe up to 5.5x100, but I dunno. Tell me what u all think.

ChRoNiC

I think that if 414 takes 2.8v that you may be near, or at, the absolute limit. I know no overclocker likes to admit that it exists but I hit the limit for my K6-2 450 at 600 (6X100). I was all psyched to go for 6X133, right about now actually, (Canadian winter = good cooling!!!) but even 3.1v couldn't get me stable at 616mhz. I wouldn't run more than 2.8v for more than a few moments regardless of cooling. When I went 3.1v I had a Socket A sink with a 48cfm, 92mm fan ducted onto it and a 90cfm case fan drawing air out making a wind tunnel effect. And I still only ran it that high just to test a few settings.

If your board goes above 83 mhz fsb you might want to try lowering the multiple and upping the bus rate. My K6-2 crunches SETI much faster (3 hours per unit average) set to 558mhz, 124X4.5 (the current setting) than it does at 600mhz, 100X6. Even if the board won't the clock chip might. SoftFSB or CPUFSB could help you out there.

I had stability problems getting to 124fsb and I solved it by upping the I/O voltage from 3.3v to 3.6v. I'd listen to Sushiman though and tread cautiously. I believe his fatal setting was 4.1v (correct me if I'm wrong Sushi). If you up the I/O I'd keep it near 3.6v at the high end. And again I stress that 2.8v core is what I would consider an absolute limit for that chip.

You could de-cap it but I'd give the other options a try first. It's not as easy a procedure as it may seem. You may want to consider lapping it though.

I would definately put a Socket A or Socket 370 sink on in place of a stock one, especially at 2.8v.

Anywho, that's what I think.

[tainice]

hehehe, my k2 300 won't even do 333 stable with 3.2.:( what a shame..anyway, i was still very green about this ocing businessback then, so if i still got that chip now, it might be another different story.:)

[Blackearth]

well, well, i was able to get my 266 to 366; w/ out upping the voltage, and the motherboard was the limit. it was running super cool w/ that massive heatsink and 80mm fan combo (probably would have worked oaky w/ my tbird, but i dont know why i didnt try it).

[Sushiman]

hehe...weeee yes 4.1 was the overkill.... nothing like fried chips to wake you up in the morning !

[YMAN]

Originally posted by Sushiman
watch your voltage... You increase the VIO too high and the cpu goes dead. Its weird because the voltage setting below that will work fine ... and then the next one kills it. (ive killed many k6-2's) but go for it... i got my 500 to 690 (it died at the next VIO setting)

good luck

I want to stress this as well, I have burnt many also.

[JFettig]

i have an old 333 comming to me, and how do they overclock? and what kind of cooling is needed? and how bout the voltages and whatnot.....?