SOYO KT333 Lite & AMD 2100 XP Tbred B - Tech Support Forums

VERT · April 29th, 2003, 09:36 PM

I just got an AMD 2100 XP Tbred B OEM and was hoping to do the ole FSB raise to 166 and reap the benefits, but my mobo (Soyo KT333 Lite) wont post at this FSB setting, I have had the FSB upto 150 with my PC running fine, but this morning I had problems and have put the FSB back to 133 until I can find some more information.

So who has a Soyo KT333 Lite and what are your experiences which raising the FSB?

Bruneau · April 29th, 2003, 10:42 PM

You'll have to increase the core voltage to overclock. Also what is your RAM rated for? You may have to increase the voltage to the RAM and relax it's timings.

Ya gotta tweak em.

VERT · April 30th, 2003, 12:49 AM

Quote:

Originally posted by Bruneau
You'll have to increase the core voltage to overclock. Also what is your RAM rated for? You may have to increase the voltage to the RAM and relax it's timings.

Ya gotta tweak em.

nah nah nah, im talking about the FSB overclock, the AMD 2100XP TBred b core CPUs are excellent for running at 166 FSB - so bascially it would be running as a 2700 XP, that is why i bought it.

I just want to know your experiences with upping the FSB on this mobo with the Tbred B core cpu.

Or if you have any links?

On another note you dont have to necesary increase your voltage to overclock, this is useful to get higher speeds, but this also only relates to the cpu multiplier overclock. I have been overclocking my PCs for years now and my greatest achievement was running a Duron 1200 at 1500, this was without adjusting the voltage and with air cooling.

Omardeth · April 30th, 2003, 04:29 AM

Quote:

On another note you dont have to necesary increase your voltage to overclock, this is useful to get higher speeds, but this also only relates to the cpu multiplier overclock. I have been overclocking my PCs for years now and my greatest achievement was running a Duron 1200 at 1500, this was without adjusting the voltage and with air cooling.

i don't know where you get this idea from . intel has locked its multiplier for years . and to get some to oc you have to raise the voltage to get them to oc . and all you were doing with those was changing the fsb .

i still have a celry 266 at 400 running and a 300 celery at 450 .

i have the soyo kt333 dragon ultra plat . it is a nice board . your hold up might be the memory , might need to raise the voltage , even change the timing on the memory . what kind off memory are you running ?

beppodmime · April 30th, 2003, 08:08 AM

If you bought any CPU expecting it to overclock like everyone else's, then you bought it for the wrong reasons. There is no such thing as a guaranteed overclock. Not all CPU's, even those from the same wafers, are going to overclock the same. The most you can actually count on, is maybe a 10% increase in clock speed, but there are no guarantees. That doesn't mean it's the CPU holding you back. It may be the Soyo board. I'm not entirely versed in the KT333 chipset, so does it even officially support a 166MHz FSB? Not just the memory clock, but the actual FSB. If it doesn't have the right PCI and AGP dividers, you're basically overclocking all of your peripherals connected to the PCI and AGP busses. Hard drives are very finicky about how fast they want to run, and most won't even run the slightest bit out of spec.

Another thing, about what Vert said about the increase in voltages. Any time you raise the CPU clock, i.e. raising the FSB without lowering the multiplier, you are running the CPU out of spec, and supplying more voltage to the core can help solve stability issues. I think there was a link to an article that explained, pretty much in layman's terms, how and why this works, posted somewhere in the forum. I'm also not sure if the Soyo board has the ability to override AMD's multiplier lock with TbredB CPU's, like the nForce2 boards do.

Your memory specs would be useful, too. I assume it's PC2700?

Bruneau · April 30th, 2003, 08:10 AM

Vert:

Obviously you haven't done much overclocking. It's not the 166fsb holding you back. It's the core voltage that you refuse to raise.

Bruneau · April 30th, 2003, 08:13 AM

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VERT · April 30th, 2003, 08:31 AM

guys I dont think you have read my first post because you are telling me irrelivant information.

I will start from the begining I have an Athlon XP2100 Tbred B, the core is the AIUHB, this core is the same as the one on the infamous 1700 XPs that overclock so well.
These CPUs will overclock straight outta the box - most people with these cpus have just upped the FSB to 166 and got the ie 2100 XP running at 2700 XP speeds - this is what I want to do aside from the fact that my mobo only supports upto the 2600 XP, so that is sufficient.
However as I stated above my mobo seems to be having problems running stable at the higher FSB speeds.

so

Quote:

So who has a Soyo KT333 Lite and what are your experiences which raising the FSB?

or non lite version

My ram is Samsung PC2700

and
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Bruneau · April 30th, 2003, 08:48 AM

I have the same 2100B AIUHB chip running 2.3G. 200fsb x11.5 @ 2v. in an Epox 8rda w/ PC3200 Samsung. Mine won't do 13x166 at stock voltages, and obviously yours won't either.

Some of those new 1700's are amazing, I agree. But, all chips aren't created equal. It just depends on which batch they come from.

beppodmime · April 30th, 2003, 08:51 AM

I think we all read your first post, and I'm asking you to read the first paragraph of mine, or read it again if you have already. No two CPU's will do the same overclock, even if they are cut from the same wafer, have the same stepping, et cetera and so on. I have read instances where the people trying to overclock the AIUHB stepping processors had to increase the core voltage to get them to run stably. Yes, you have a better chance of achieving the clock speed you want to run, but it is in no way guaranteed to follow the same guidelines.

If AMD made chips that were capable of reliably running at a higher clockspeed than they are rated for, and do so at stock voltages, then why would they not label them as a 2700+ and not a 2100+? They could hawk the chip for a reasonable amount more if they marked them as 2700+'s, and they are in the business to make money, not friends. You said it yourself:

Quote:

most people with these cpus have just upped the FSB to 166 and got the ie 2100 XP running at 2700 XP speeds

Try, just try, increasing the voltage a notch or two. See what happens.