Difference between Steppings with 3 & 4 letters??

[SeLecT]

I've bought me today an AMD64 X2 3800+ EE. Now i'm wondering about the stepping, because he has a stepping with 3 letters and not with 4 letters.

Does anyone know the difference between the cpus with the "3 lettes-stepping" and the cpus with the "4 lettes-stepping"?

Here an picture from my amd: stepping is 0646BAB



Greetings Robert

[The Ghost]

i think that you are looking at the wrong letters for your stepping

ledbf
http://www.cpu-world.com/info/AMD/amd_stepping_K8.html

[SeLecT]

hmm, i don't think so, because all the other guys named the lettes in mentionend in my first post as their stepping.

and from my old sandiego 3700+ i used the same lettes as the stepping.

[davidletterboyz]

AFAIK, I noticed 3 characters at the back are CPUs assembled in China, while 4 characters are from Malaysia.
I could be wrong though...

BTW, how does yours OC? I just got an EE...and it sux..

[SeLecT]

Yes, mine is from China. I don't test OC yet, because my ram doesn't arrive. i think tommorow i could test him a bit.

What steppings has your EE? What temps pu have ot with the Thermaltake BigTyphoon? Because i can't use my scythe ninja, because he blocks the ramslot.

[The Ghost]

0646BAB

the first 4 numbers is your year and week that the chip was made year 2006 and week 46

here is another page with the list of steppings
http://www.cpu-world.com/info/AMD/K8...ing_codes.html

[davidletterboyz]

Yes, mine is from China. I don't test OC yet, because my ram doesn't arrive. i think tommorow i could test him a bit.

What steppings has your EE? What temps pu have ot with the Thermaltake BigTyphoon? Because i can't use my scythe ninja, because he blocks the ramslot.

My room temp is high....so probably not a suitable reference for u. :P
Mine is 0648UPAW.
I put 1.525V in BIOS and sensor reads 1.55V to 1.57V. Full load running two F@H shows 52C for core0 and 48C for core1. Probably 3C higher during day time (night here).
My TTBT is very close to my first ramslot too. But i'm using ramslot 3 n 4.

[SeLecT]

kk, thx.

I use the Foxconn C51XEM2AA und 4*512MB Kingmax DDR2-667.



This is the problem in a picture. now i search another cooler...

[s7e9h3n]

hmm, i don't think so, because all the other guys named the lettes in mentionend in my first post as their stepping.

and from my old sandiego 3700+ i used the same lettes as the stepping.

Tell all the other guys that they're wrong That's not the stepping...




http://www.xtremesystems.org/forums/...ad.php?t=87182 <-THIS IS STEPPING

[Lastviking]

I stil think and will call the leters after the week for stepping and they is very importen to...but the leters before is more importen than the ones after the week

[ozzimark]

you can call it anything you want, but it would be most technically correct to call those 3 or 4 letters on the end the "batch code"

[Lastviking]

you can call it anything you want, but it would be most technically correct to call those 3 or 4 letters on the end the "batch code"

hmm... batch is the last numbers..

like 0121

[K404]

I stil think and will call the leters after the week for stepping and they is very importen to...but the leters before is more importen than the ones after the week

IMHO memory controller revision and week are the most important things...not that many of us know the wafer differences between weeks.

If now a bad time to tell you S7 works for AMD?

[ozzimark]

hmm... batch is the last numbers..

like 0121

no no, that's what number the cpu is WITHIN that batch that is noted by the batch code

[Lastviking]

IMHO memory controller revision and week are the most important things...not that many of us know the wafer differences between weeks.

If now a bad time to tell you S7 works for AMD?

1.CCBBE
2.0617
2.FPMW

Yes the first leters are most importen...thats can we agre on, and after thats is week and then last 4 leters... batch 01** is most gambling some times high batch clocks higher and some times low batch clocks higher.



CCBBE 0617 FPMW
146135AE601**

[Lastviking]

no no, that's what number the cpu is WITHIN that batch that is noted by the batch code

lol thats sound hard to understand , but tell me now if i´m right the last numbers 0211 tells me thats this ex is number 0211 and it cant be any another thats have 0211 but it will be cpus like <-0210 and 0212->

[ozzimark]

batch 01** is most gambling some times high batch clocks higher and some times low batch clocks higher.

i was under the impression that this was basically a disproven rumor and there was no real trend.. low batch number is just a cool thing to have, like this 146

[ozzimark]

lol thats sound hard to understand , but tell me now if i&#180;m right the last numbers 0211 tells me thats this ex is number 0211 and it cant be any another thats have 0211 but it will be cpus like <-0210 and 0212->

yes.. basically the breakdown goes like this..

stepping, first 5 digits.. CABNE in the above pic. the stepping is made during a few weeks. sometimes a short run, sometimes a long one
then after that, there is the date.. 0530, 30th week of 2005
then batch code.. has the day of the week, which batch it was that day, and if there is mixing of batches or lots allowed

then in the 3rd line, those last 4 numbers tell you which number the cpu is within it's specific batch



btw, just noticed.. interesting stepping on that chip. the 2nd number is E.. i've never seen that before

[Lastviking]

yes.. basically the breakdown goes like this..

stepping, first 5 digits.. CABNE in the above pic. the stepping is made during a few weeks. sometimes a short run, sometimes a long one
then after that, there is the date.. 0530, 30th week of 2005
then batch code.. has the day of the week, which batch it was that day, and if there is mixing of batches or lots allowed

then in the 3rd line, those last 4 numbers tell you which number the cpu is within it's specific batch



btw, just noticed.. interesting stepping on that chip. the 2nd number is E.. i've never seen that before

Its a keeper

[s7e9h3n]

i was under the impression that this was basically a disproven rumor and there was no real trend.. low batch number is just a cool thing to have, like this 146....

Wrongo Bucko..... ...Lower batch numbers generally WILL clock better than the higher numbered ones. There are exceptions to the rule, like your POS 146 Now these are gems :



Both of these dual cores do at least 3ghz paired on the same board @ DEFAULT vcore

Note: Recently we've had to revise the batch-code theory to include higher numbers where a "new" batch begins.....

[ozzimark]

hahaha, yes. i miss that 146

and i guess i've just seen too many chips in the 200 range that clock surprisingly well to really be in support of the lower batch number = better oc'er..
your chips don't count cause you have special resources

[s7e9h3n]

hahaha, yes. i miss that 146

and i guess i've just seen too many chips in the 200 range that clock surprisingly well to really be in support of the lower batch number = better oc'er..
your chips don't count cause you have special resources

Actually, if you're talking about dual cores in the 200 range, then you'd be correct as IIRC, the number of dual core cpu's able to be cut from a single wafer tops out ~200....so the early 200's would be somewhat comparable to the lower numbered cpus......

[SeLecT]

But when i want to buy a good AMD 64 3700+, then i regard the following letters:

Sorry ozzimark, for using ur picture



Because the letters an numbers says the most over the oc-behavior. So the 0614 BPMW is better then the 0524 XPAW. On the first places in the overclockinglist are for example the BPMW...

But these are the last letters.... and i called these 4 numbers and 4 letters till this day STEPPING....

i hope you understand me?!

[ozzimark]

Because the letters an numbers says the most over the oc-behavior. So the 0614 BPMW is better then the 0524 XPAW. On the first places in the overclockinglist are for example the BPMW...

But these are the last letters.... and i called these 4 numbers and 4 letters till this day STEPPING....

i hope you understand me?!

i got you, except that first statement isn't exactly correct from my experience


stephen.. makes sense now..

[stunned_guy]

I think all second line is the stepping in my mind. Thats the interesting thing.