AMD locking multipliers
Posted: Fri Nov 14, 2003 3:30 pm
In my web travels I came across this........
c/p
EDIT: November 9, 2003: Official AMD Forums moderator: "...this is business and AMD can't afford to keep shelling out unlocked 2500+s while losing $300 on each chip."
EDIT: Singapore first to report a 2600+ Barton lock, no word yet on locked 2800+ and up Bartons.
EDIT: Breaking news: AQZFA week 42, UMPW is being reported as unlocked in Australia. There were conflicting reports of other same stepping and week 2500+s being locked and unlocked but now the entire CPU markings AQZFA 0342 UMPW match for both locked and unlocked 2500+ Bartons.
If this is true, game's over as far us trying to figure out steppings & codes for locked Bartons, AMD locked whatever they got their hands on that happened to be in stock.
Majority of the locks were done to post week 39 CPUs. Some appear to have shipped out before they were locked. These are conflicting reports and as more come in, we'll see if they're true or not.
They are no longer making Thoroughbreds so the only Athlon XPs being manufactured are Bartons and Thortons (Thortons are Bartons with 1/2 the cache, they're 2000+, 2200+, 2400+ see table here: http://www.c627627.com/AMD/AthlonXP/) So there's a good chance all lower rated Athlon XPs week 43 and later are locked and many of the week 39 through 42 are as well.
Also see the CODES thread for info on how to tell a Thorton from a Thoroughbred:
http://forum.oc-forums.com/vb/showt...threadid=222237
* * *
Original Posting:
For those of you that haven't heard, new Bartons are factory locked, (not even wire tricks work with them.)
We have yet to see visible physical difference in locked chips which not one person has noticed thus far despite posting pics of L1 bridges, etc.
We're starting a data base of locked & unlocked chips:
locked:
AQXCA 0340
AQXEA 0341 MPMW
AQXFA 0339
AQXFA 0340 MPMW
AQYFA 0340
AQYFA 0341 TPMW
AQYFA 0342
AQYFA 0343 RPMW
AQZEA 0341 RPMW
AQZFA 0339 UPMW
AQZFA 0341 SPMW
AQZFA 0341 XPMW
AQZFA 0342 TPMW
AQZFA 0342 UPMW (multiple confirmations of both locked and unlocked chips)
unlocked:
AQZEA 0334
AQZEA 0339 UPMW
AQZFA 0340 UPMW
AQXFA 0340 TPMW
AQXFA 0340 MPMW
AQZFA 0340 SPMW
AQZFA 0342 UPMW (multiple confirmations of both locked and unlocked chips)
AQZFA 0342 TPMW
You see there is no stepping or week pattern, the only way to increase your chances is to try to get a pre week 39 Barton...
Note that you may have to save & exit a second time in BIOS to get Abit NF7 to accept the new multiplier if you have an unlocked CPU.
quote:
Originally posted by OC Detective
If the L1's are cut as would have to be the case in order to make multi changing impossible then wiremodding wont make any difference - thats why its important someone checks the L1's bridges with a multimeter to 100% confirm if indeed they are cut.
end c/p
hmmmm. The Vidman doesn't see this as a big deal for the Barton 2500+'s anyway as you can still jack up the FSB to say 200-220 if you have a good OCing mobo and some PC3200 or better RAM.
Now if you're thinking of buying the 2800+'s it could be a big problem as they default to like 12.5 multi or thereabouts.
Bottom line = If you're going to OC a newer stepping AMD you better search around and see what you can find out about whether or not a particular multi is going to work for you.
Cheers,
Todd
c/p
EDIT: November 9, 2003: Official AMD Forums moderator: "...this is business and AMD can't afford to keep shelling out unlocked 2500+s while losing $300 on each chip."
EDIT: Singapore first to report a 2600+ Barton lock, no word yet on locked 2800+ and up Bartons.
EDIT: Breaking news: AQZFA week 42, UMPW is being reported as unlocked in Australia. There were conflicting reports of other same stepping and week 2500+s being locked and unlocked but now the entire CPU markings AQZFA 0342 UMPW match for both locked and unlocked 2500+ Bartons.
If this is true, game's over as far us trying to figure out steppings & codes for locked Bartons, AMD locked whatever they got their hands on that happened to be in stock.
Majority of the locks were done to post week 39 CPUs. Some appear to have shipped out before they were locked. These are conflicting reports and as more come in, we'll see if they're true or not.
They are no longer making Thoroughbreds so the only Athlon XPs being manufactured are Bartons and Thortons (Thortons are Bartons with 1/2 the cache, they're 2000+, 2200+, 2400+ see table here: http://www.c627627.com/AMD/AthlonXP/) So there's a good chance all lower rated Athlon XPs week 43 and later are locked and many of the week 39 through 42 are as well.
Also see the CODES thread for info on how to tell a Thorton from a Thoroughbred:
http://forum.oc-forums.com/vb/showt...threadid=222237
* * *
Original Posting:
For those of you that haven't heard, new Bartons are factory locked, (not even wire tricks work with them.)
We have yet to see visible physical difference in locked chips which not one person has noticed thus far despite posting pics of L1 bridges, etc.
We're starting a data base of locked & unlocked chips:
locked:
AQXCA 0340
AQXEA 0341 MPMW
AQXFA 0339
AQXFA 0340 MPMW
AQYFA 0340
AQYFA 0341 TPMW
AQYFA 0342
AQYFA 0343 RPMW
AQZEA 0341 RPMW
AQZFA 0339 UPMW
AQZFA 0341 SPMW
AQZFA 0341 XPMW
AQZFA 0342 TPMW
AQZFA 0342 UPMW (multiple confirmations of both locked and unlocked chips)
unlocked:
AQZEA 0334
AQZEA 0339 UPMW
AQZFA 0340 UPMW
AQXFA 0340 TPMW
AQXFA 0340 MPMW
AQZFA 0340 SPMW
AQZFA 0342 UPMW (multiple confirmations of both locked and unlocked chips)
AQZFA 0342 TPMW
You see there is no stepping or week pattern, the only way to increase your chances is to try to get a pre week 39 Barton...
Note that you may have to save & exit a second time in BIOS to get Abit NF7 to accept the new multiplier if you have an unlocked CPU.
quote:
Originally posted by OC Detective
If the L1's are cut as would have to be the case in order to make multi changing impossible then wiremodding wont make any difference - thats why its important someone checks the L1's bridges with a multimeter to 100% confirm if indeed they are cut.
end c/p
hmmmm. The Vidman doesn't see this as a big deal for the Barton 2500+'s anyway as you can still jack up the FSB to say 200-220 if you have a good OCing mobo and some PC3200 or better RAM.
Now if you're thinking of buying the 2800+'s it could be a big problem as they default to like 12.5 multi or thereabouts.
Bottom line = If you're going to OC a newer stepping AMD you better search around and see what you can find out about whether or not a particular multi is going to work for you.
Cheers,
Todd
AS long as it does 11*200 tho it won't be a problem for me. 
:
eGo