HELP Urgently need stepping codes

[Ottoman]

I may have stumbled upon a Freak of nature here....


I bought a Slot A classic athlon yesterday...

instead of have the usual stepping K7650 (my old one)

it is a AO750.... i did buy a 750, but AO?? i've only seen K7
week 33

and it has 256 kb full speed L2 cache... where as my other had 512kb half speed cache....
I thought they only came in 1/2 1/3 and 2/5

and i've gotten some insane results.. I'm talking 38% overclock using air.... and thermal paste not even ASII!!

I dunno what I got but I need help!!! I looked all over for a Classic athlon stepping code d-base or guide... got nothing

I had a huge post that went into detail, but the forum went retarded when I tried to post and I lost it... I'll tell u later

but i hit 1053 mhz!!! 9x117@ 2 volts

[flounder43]

Here are what the codes mean, for reference...

[Ottoman]

sorry champ..

that's for a socket A duron...

I'm talking a SLOT A 'classic' athlon..

the long ones, that look like celerons... but in a black case...
came out in 99-2000

[Thelemac]

It may be a slot A, but it's not a classic. That's a Thunderbird (you can tell by the cache).

[Ottoman]

well that's some good news...

is that what AO means?

cuz the stepping has changed from Slot to Socket..

I can't decipher most the code... I had once found a page on it, but no longer :(

wonder why they halfed the cache size?

[]-[itman]

the AO750 means you have an Athlon(A) 750mhz processer(0750) the 0 goes with the 750 as a placeholder for the higher chips that reach a ghz. The way you tell a classic Athlon from the newer Thunderbirds is the cache size.

[flounder43]

Originally posted by Ottoman
sorry champ..

that's for a socket A duron...

I'm talking a SLOT A 'classic' athlon..

the long ones, that look like celerons... but in a black case...
came out in 99-2000

Although the pic is of a socket A, I think the codes work for the slot kind as well...

[Über~PhLuBB]

Originally posted by Thelemac
It may be a slot A, but it's not a classic. That's a Thunderbird (you can tell by the cache).

How much cache do classics have vs TBirds? I'd like to find out what mine is too, I removed the case for a GFD that I never bought, so cache is the only way I can tell.

[Ottoman]

the classics have 512kb @ 1/2 , 2/5, 1/3 speed,

I had a 650 w/ 512kb @1/2...

now I got a tbird w/256kb @ full...


wonder if the only difference between the socket A tbird and Slot A tbird is the On-die cache...

[Ottoman]

Originally posted by flounder43


Although the pic is of a socket A, I think the codes work for the slot kind as well...



well then help me decipher

old:
AMD-K7650MTR51B A
21000150024

new:
AMD-A0750MPR24B A
210033528921


I think the old one is 2000 week 01 (0001)
and new is 2000 week 33 (0033)

[flounder43]

Originally posted by Ottoman




well then help me decipher

old:
AMD-K7650MTR51B A
21000150024

new:
AMD-A0750MPR24B A
210033528921


I think the old one is 2000 week 01 (0001)
and new is 2000 week 33 (0033)

Here, I think I can help with the new one:

A0750[speed 750MHz]M[Card Module]P[Vcore 1.7V]R[Case Temp 70C]2[cache128]4[?]B[200 MHz System Bus]A[?]

and so on, it is a little diff, but the codes seem to make sense.

[Ottoman]

hmmm...

except I have 256 kb cache..

[flounder43]

I found this on the net, codes for the classic Athlon slot a:



Other Numbers and Letters
M : slot package
T : 1.03V - 2.05V operating voltage
R : 70C max case temperature
5 : 512Kb L2 cache
2 : 2/5 L2 cache divisor
B : 200MHz FSB
A : 0.18um core

Those seem to match yours, except the cache, which runs at 1/2 on a 650, instead of 2/5.

[Thelemac]

They halved the size because they moved it on die...so that they could make it faster. They wanted to keep the die size down, though. So twice the speed should work just as well at half size (by the obvious reasoning there. Might be somthing else, though)

[Ottoman]

so you're saying my slot A tbird is the same as a socket A 750 tbird? except mine is stamped on a bigger PCB and runs cooler but it's the same chip???

SWEET:beer: