Need help to ID this T-Bird CPU..please!!

[PDL]

This is suppose to be a 1 gig/266 but unless I am mistaken, and I hope I am, this is a 200MHz core.
I read the numbers as:
A1000AMT3B
AVIAR0111DPMW
Y6149...etc
I am also including a screenshot of WCPUID, does that have any info that determines the internal systembus??

[TranceBear]

it's a 200mhz FSB, which in my book is better, but if you were sold a 266, you might wanna complain.

[PDL]

OK, thanks for the quick response TranceBear.
So, wherein does the difference lie and how would one tell the difference if not by the numbers.
Is this something that only a future mainboard upgrade would be able to utilize? I have the A7V133...fairly up-to-date!
Why do you think they are better?

[TranceBear]

dad (Jul 29, 2001 09:55 p.m.):
OK, thanks for the quick response TranceBear.
So, wherein does the difference lie and how would one tell the difference if not by the numbers.
Is this something that only a future mainboard upgrade would be able to utilize? I have the A7V133...fairly up-to-date!
Why do you think they are better?

The letter (B or C) is the only way I know how to do it. I like the 200mhz fsb cause it causes higher multiplyers in your BIOS and will able you an easier O/C. Let's use the 1.4ghz chip for example. The 200mhzFSB of this chip runs at 14x100 stock, the 266mhzFSB chip runs at 10.5x133 stock. Therefore you have the use of the 14 multiplyer. I will be getting me a 1.4ghz 200mhzFSB chip here soon. In theory it could run at 14x133mhzFSB (1860mhz) with awesome cooling!! With my current chip in my system I actualy have the use of even the 15 multiplyer!! The 1.7ghz chips that will be out soon even will have the 200mhzFSB available. That would be cool to see that puppy at 133mhzFSB, 2261 mhz!

[FRANK]

I concur with the above, that's a 200MHz CPU (B code)

I'm not sure that there is really any difference in potential between the B and C chips. If anything there is an issue that was brought out a few months ago dealing with the initial boot process. The BIOS first looks to the defaults on the CPU to initiate the BOOT process. Given this situation, during the first few cycles of POSTing, the multiplier is at the default setting of the CPU. This means that a 200MHz CPU will be trying to start with a higher multiplier, sometimes more than the CPU will tolerate.

Here's a link to a lengthy article that explains it much better and in more detail than I did here;

http://www.anandtech.com/showdoc.html?i=1440&p=2

A long article but something to think about if you are having problems posting with your 200MHz CPU @ 266.

[TranceBear]

One problem I have with this article is that he only tested the Asus and Iwill boards with the KT-133a chipset. The MSI K7T Turbo seems to not have this problem. But he states that ALL boards with this chipset is not going to work.

[FRANK]

Granted articles such as this should be taken with a grain of salt. Keep in mind that it is several months old. But as with many things we've come across in these overclocking endeavors, there are always exceptions to every rule. Such as has been reported in regards to the KT133 chipset not able to go above 110 MHz, many people have reported much higher than that. Your MSI KT7 turbo may be an exception as well.

I believe that I've read of a lot of people stating that they can't get as high overall speed out of a given processor when using a higher FSB. This may be an indication that there is something to this. I think that this reported "issue" may well be a good bit of information to store in the back of our minds to be called upon in the future if the problem presents itself and there is no other plausible explanation.

Keep in mind that there are an awful lot of motherboards out there with these VIA chipsets of which many are coming upon upgrade time.

[diehrd]

Hmmm I am a believer of the 266 fsb processors,,,At the very least you are guranteed to run at 133 fsb,,On a 200 fsb any setting over 100 is overclocking and therefore has a chance of causing stability issues and or no boot,,This is true on a 266 chip also but only after you go above 133fsb,,,So By far a processor rated at 266 is the better bet and surest buy when looking for a higher fsb.

[BIG-O-2]

Dad man this is weard, I have three dads now. I have to ask you or anyone for that matter. On the AMD cpu the L1, L2, L3 and so on what does it all mean, Does anyone have the answer. Is it good for all to be closed or open or it doesn't mater?

David