Lower end Bartons?
TheLostSwede
Trondheim, Norway Icrontian
As i thought a while ago in THIS post/thread, a simple mod of the bridge will give you the extra 256kb of cache. The site that claims this discovery is overclockers.ru but xbitlabs has the english version.
http://www.xbitlabs.com/news/cpu/display/20030930171549.html
Looks like the Thorton will be from XP2000 to XP2400 as a starter. How can you see if you have a model 10 of an amd processor? Thrax?
http://www.xbitlabs.com/news/cpu/display/20030930171549.html
Looks like the Thorton will be from XP2000 to XP2400 as a starter. How can you see if you have a model 10 of an amd processor? Thrax?
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Barton is also model 10 according to AMD, so we must look at something else BESIDES model #. Also be known that the new Applebred is Model 8 like a Tbred, instead of model 9.
We can see that the thorton uses AXDC for its prefix for now, and the Barton uses AXDA on all the ones I've seen. So that could be an initial step. AXDA means Athlon XP, if it's not AXDA, it's not an Athlon XP, therefore it must be Thorton?
The barton uses its temperature/voltage suffix (DKV4E) in a manner differently from other chips. Namely, it's not DLT3C, DUT3C, or any other of the common ones.
This thorton also uses TPMW, and the Barton uses some variation of VPBW. Not much to go on there.
As for the steppings, it seems the third letter in the stepping on the Thorton is higher in the alphabet (Closer to "A") than the Bartons use. AQXEA, AQXCA, and AQZEA are all revisions of the Barton. I think those are the only three to date.
This Thorton however, uses a U as its third letter. Higher than both X or Z like the Bartons. The Thorton was also fabricated much later, 11 weeks later than a fairly recent Barton (AQXCA).
You'll also notice below the bottom--right pad, there is a little brown box on the border of the chip with a two character alphanumeric code:
The Thorton says G5, and the Barton has what appears to be G1. This could be something of importance.
On the bottom row of transistors with the Barton (below the core), there is a large gold dot to the left. Below that gold dot is a smaller dot, and above the large dot to the right is another small dot (Above and left of the far left transistor on the bottom row). The Thorton doesn't have these, but I don't know if that's an aberration in photograpy.
You might also notice that the last two digits on the core of the Thorton on the top line are considerably higher than the last two digits of the core on the barton.
So what does it all mean? I think this theory of mine is the most sound:
AXDA is Athlon XP, specifically used on <b>ALL</b> Bartons. If you find a chip that looks like a barton, and says AXDC, there's a good chance that it's a Thorton. AXDC is a brand new OPN code.
AXDA -> AXP .13u
AX -> AXP .18u
AMSN -> AMP .13u
AMP/AHX -> AMP .18u
K7/A -> Athlon .18u
AHM -> Mobile Athlon 4 .18u
AXMS/AXMD/AXDM -> Mobile AXP .13u
D/DHD/DHM/DHL -> Duron .18u
AXDC -> Who the hell knows.. It's the only new one. It has to be.
Barton core + AXDC = Possible winner. Now the world must try my theory.
Never thought I'd see the day when Mack asks me for Athlon core advice.
Can't wait to see how these new Thortons clock, as well as the Applebreds.
A brilliant post and a possible explanation. MUCH appreciated.
Thanks a million.
So, we should look for a AXDC 2000+ then to start with. At least from week 31 and newer. Since the XP 2000 isnt made on the Thoroughbred core (at least not that i know of), a 2000+ would be easy to see if it is a Thorton or not. A less than $50 (possible even $40) chip that does 2.2-2.4 gigs, has 512kb of cache with a simple mod? Bargain of the year?
When it comes to silicon (and many other things), you are the man to speak to and we all know that. Thats why i asked you
We look for AXDC2000, and we just might get what we want! Now, I hope they get to market quickly.