Help with FSB settings.KT7A board "wz" bios

[speedkills]

This has got to be an ignorant oversite on my part, but I can't get anywhere overclocking my board. The set-up: KT7A-Raid,single IBM Deskstar 75GXP(for now), T-Bird 1ghz (200fsb), 128 megs good Corsair pc133 ram, and the rest. In the bios, i can't even get away with a 7.5 mult. @133fsb. If anyone has suggestions on what I'm missing please share.

[NDC]

I put together the exact same setup just a few days ago.... only the mainboard is KT7A without RAID...

First of all, you should go into SOFTMENU III and set the options to "User Defined" and set the multiplier at 10.0, not 7.5 (7.5 X 133 = 997.5). T-Bird 1Ghz's are multiplier locked so changing the multiplier is going to do anything on the 1Ghz T-Bird. And then set the FSB to 133/33Mhz (133-FSB/33-PCI) which is available with the WZ BIOS upgrade. I currently have the system running at 10.0 X 133 (1330Mhz) using Samsung PC-133 CAS2.

[AuraEdge]

On WW and before, 7.5x133=997
on WZ and later, 7.5x133=1000, like its supposted to be. (133=133.33 in WZ and later, as listed in the BIOS fix history at www.abit.com.tw) (http://www.abit.com.tw))
make sure you pick 133/33 and not 133/44

[ThiemeMD]

I think NDC is on the right track.

Speedkills, did your unlock the CPU before you assembled the system? (by closing the L1 bridges) If not, changing the multiplier in the bios has no effect. But changing the FSB does! If this is the case, the computer is trying to start at 1330mhz (10x133).

ThiemeMD

[speedkills]

Thanks everyone. I have not yet unlocked my T-bird, and maybe need to research my memory more. I'm looking to overclock more out of curiosity than nessecity. I have a "3D Cool Tornado" case, and used "Artic Silver" paste between my chip and Mini Super Orb. I got a little rushed, and neglected to unlock the T-bird first(bad move). NDC I did as you recomended and my system fired up @ 1333mhz, Then errored, and I never got back to that. Do you have any specific memory recomendations? Also should I make a trip to Radio Shack for conductive pen verses pencil lead? Thanks in advance. This group is a great help to many.

[jad1097]

Did you increase the voltage? If bot give it a try.

This site covers about everything for a KT7 and KT7A board. http://www.viahardware.com/faq/kt7/kt7faq.htm

And this one has a good memory tweaking guide. http://www.thetechzone.com/display.asp?i=13&p=1

[speedkills]

Thanks for the reply, and sites. jad1097 I can't boot to anything at 133fsb. Iv'e tried voltage increases, and double checked everything I know. The only few times it booted, I was put in safe mode. It did boot twice that way at 10x133/33(1333mhz) 1.80 volts only to error instantly in Windows. I will research those, and other sites Mon pm. It's funny how you think you know enough until a "cyberglich from hell" hits you. Always good to remember that anything electronic is explainable, and diagnosable. Thanks

[NDC]

What latency is your memory set to? 2 or 3?

[speedkills]

NDC, latency has been at 3, also tried 2. Typically it locks as soon as the "Windows ME" comes up. Maybe, just for kicks, I'll back rev to "WW". Also have a 256m stick of Kinmax PC150 on the way. I will be unlocking my chip this week, but would like to have the fsb issue figured out before then, as they are completely separate, aren't they??
I still have not got this to run at 7.5 X 133, and still think it's me missing something. Thanks

[NDC]

I still have not got this to run at 7.5 X 133, and still think it's me missing something.


Let me get something straight here... You have 1Ghz T-Bird CPU, correct? why are you trying to run the processor at a lower multiplier value and at a higher FSB? The default setting for that CPU is 10.0 x 100, not 7.5 x 133..... Am I missing something here?

[This message has been edited by NDC (edited 04-09-2001).]

[AuraEdge]

Well your not missing the fact that its a 1Ghz CPU, but you are missing the fact that 133x7.5 is also equal to 1Ghz
1Ghz is 1Ghz any way you slice it for the processor.

A 266Mhz FSB is faster than a 200Mhz FSB, so 133x7.5 is favorable when compared to 100x10.0. The CPU still thinks its running a Ghz either way, but the system bus is 25% faster.
I have tryed two CPU's that were 750's that both clocked to 10x100 that also clocked to 7.5x133 with no problem.

Speedkills - your also missing a little something - You will not be able to run that multiplier at anything but 10.0x unless you unlock it! When you say 7.5x133, and u dont unlock it, your chip thinks 10.0x133 and craps out because it cant take the speed, because the multiplier remains at 10.0 no matter what you put it at. If you say 11.0x100, it will think 10.0x100. While you can manipulate the last number, the first number CANNOT change from 10.0 until it is unlocked.
Now for unlocking tips.
I used 0.5 mechanical pencils to unlock them (Cheapest 0.5mm pencils at the store). Just make sure none of the bridges touch eachother and your good to go. Done this on 4 chips and, even though i had to erase a couple time to make sure none of them crossed, always got it right in the end.

Whether u buy the expensive radio shack pencil or the el-cheapos at the 7-11, you gotta make sure the bridges dont touch eachother. Ive also done it with bic 0.7mm's but it was alot harder as the lead was fatter. These pencil's lead do conduct enough to short the bridges though.

[NDC]

Well, I have mine at 10.0 x 133 so I would be getting the 266FSB anyways..... I'm using the same mainboard and CPU as speedkills... I've tried as high as 140FSB 1400Mhz and no problems using default voltage... What I don't understand is why he's having trouble running it at the speed I'm running mine. It appears that he's got the primo memory so I doubt that could be the cause of not being able to post at 10.0 x 133. I heard that there are 2 types of steppings for T-Birds 1Ghz.... Do you think that could be the reason?


I'm not to much of an overclocker to be honest with ya. For me 10.0 x 133 is just fine...However, I tried closing all the bridges on L1 with a pencil ran the system 11.0 x 133 and it ran rock stable using default voltages. (I don't like to play with the voltage) It's amazing how well AMD processors can overclock compared to Intel chips..

[This message has been edited by NDC (edited 04-09-2001).]

[AuraEdge]

Even if thier both 1Ghz chips, one may only be able to go to 1.2Ghz @ 1.85v and the other up to 1.5Ghz @ Default Volts.

Older 1Ghz chips' limits were around 1.2Ghz. What he is describing sounds like a chip that cant take that kind of speed (1333Mhz).
By setting 7.5x133, he is infact not overclocking the chip at all, but meerly telling the chip to run at the same 1Ghz on a higher speed bus.

The steppings for Thunderbirds dont run like Intels

There are Thunderbird A's and B's which run 200Mhz and Thunderbird C's that run 266Mhz Default.

You both have TBird A's or B's.
However, the chip markings are usually telltale of the speed they can reach.
There are letters on the chip, on which the first letter is A and the fourth letter is A, The two letters in the middle are indication of the 'family' of chip they are in.
Chips with later markings such as AVIA or AXIA will be able to clock to around 1.4Ghz based on statistics.
Chips with lower markings like AEEA will only be able to get around 1Ghz, and AKFA maybe around 1.2Ghz.
These are not exact numbers, or even estimates. These are trends that have followed the CPU markings statistically over people who have bought chips, overclocked them as much as they could, and noted the codes on them.

There have been different explainations as to what the letters mean, but in the end, later letters usually indicate that that particular chip can overclock higher.

Just one of the secrets in the trade of Thunderbird overclocking.

You should not worry about this if you have already bought your chip. These numbers do not apply to every chip with that code, its just that your chance of getting a higher overclock goes up if you have a chip with a later coding.

[speedkills]

Thanks folks. I was missing something. I will unlock my chip later this week, and check for the code. I didn't realize the lock would prevent anything other than 10.0x. AuraEdge eventually, after all tweaking is complete, I will check the code verses how hard I can push this one. Many thanks.

[AuraEdge]

www.overclockers.com (http://www.overclockers.com) is where the biggest overclockers CPU database that I know of is.
Just some good info to have.