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CPU Batch Code Questions

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  • Intel
  • Database
  • CPUs
  • Batch
  • Overclocking
Last response: in CPUs
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October 10, 2014 8:58:09 PM

I have a few questions regarding CPU batch codes. Any help is appreciated. :) 

1. First digit: Some of the locations are not specified (for example, 0 and 3), so would it matter if a CPU was binned in San Jose instead of just Costa Rica? What is the location?

2. I have looked into a lot of OC databases and never found any Costa Rican chips, why are they so rare and how can I get them?

3. The 7th and 8th digit is the location on the wafer. It is recommend to be lower than "15", so does 0 mean the center of the wafer? Should it have been 50 since it is ranging from 0-99?

4. The 5th digit is the stepping of the CPU, I know that A is less voltage and more heat, B is more voltage and less heat, C is too rare to know advantages, but what is D?

Thanks for your help. :) 

More about : cpu batch code questions

October 10, 2014 9:18:41 PM

ok well you know a little more about the batch codes then I do but I can answer some questions.

I have a i7-4770k, my batch code is L311B203

-First digit is the location: Majority of Intel chips will have L as the first digit indicating Malaysia, mine included.
0 = San Jose, Costa Rica
1 = Cavite, Philippines
3 = Costa Rica
6 = Chandler, Arizona
7 = Philippines
8 = Leixlip, Ireland
9 = Penang, Malaysia
L = Malaysia
Q = Malaysia
R = Manila, Philippines
Y = Leixlip, Ireland

-Second digit is the year in which it was produced, this requires a little common sense. for my CPU it's "3" technically this could mean 2003 or 2013, but yeah... its 2013.
-Third and forth digits are the week in the year in which it was produced. For my CPU it's "11", the 11th week (dates: 3/10/13 - 3/16/13).
-Fifth digit, I was unsure exactly what this was. I'm inclined to believe what you said. Mine being a "B" I hope what you're saying it true haha.
-Sixth, Seventh and eighth digits indicate the batch.

Hope this helps. =]
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October 12, 2014 5:09:05 PM

diabedo said:
ok well you know a little more about the batch codes then I do but I can answer some questions.

I have a i7-4770k, my batch code is L311B203

-First digit is the location: Majority of Intel chips will have L as the first digit indicating Malaysia, mine included.
0 = San Jose, Costa Rica
1 = Cavite, Philippines
3 = Costa Rica
6 = Chandler, Arizona
7 = Philippines
8 = Leixlip, Ireland
9 = Penang, Malaysia
L = Malaysia
Q = Malaysia
R = Manila, Philippines
Y = Leixlip, Ireland

-Second digit is the year in which it was produced, this requires a little common sense. for my CPU it's "3" technically this could mean 2003 or 2013, but yeah... its 2013.
-Third and forth digits are the week in the year in which it was produced. For my CPU it's "11", the 11th week (dates: 3/10/13 - 3/16/13).
-Fifth digit, I was unsure exactly what this was. I'm inclined to believe what you said. Mine being a "B" I hope what you're saying it true haha.
-Sixth, Seventh and eighth digits indicate the batch.

Hope this helps. =]

Sorry, that did not help. I knew all of that, maybe if I reword it, it will make more sense.
For the first digit #3, where exactly is it? #0 says it is in San Jose, so is there any difference between San Jose or the other place in Costa Rica? (#0 vs. #3)
Mine is L343C211. :p 
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October 12, 2014 7:18:58 PM

Kammex said:
I have a few questions regarding CPU batch codes. Any help is appreciated. :) 

1. First digit: Some of the locations are not specified (for example, 0 and 3), so would it matter if a CPU was binned in San Jose instead of just Costa Rica? What is the location?

2. I have looked into a lot of OC databases and never found any Costa Rican chips, why are they so rare and how can I get them?

3. The 7th and 8th digit is the location on the wafer. It is recommend to be lower than "15", so does 0 mean the center of the wafer? Should it have been 50 since it is ranging from 0-99?

4. The 5th digit is the stepping of the CPU, I know that A is less voltage and more heat, B is more voltage and less heat, C is too rare to know advantages, but what is D?

Thanks for your help. :) 


1. The actual ICs for a particular family of microprocessors are all manufactured in only a small number of facilities. They may then be shipped in bulk to secondary manufacturing facilities for testing, and packaging. For example, Intel has 22nm fabs in Oregon, Arizona, and Israel.

2. No clue. I doubt that they're statistically any better though.

3. It shouldn't matter where the chip is located on the wafer. Defects in the substrate are so small that there's little to no spatial relationship between them. The manufacturing process itself, which is position independent, is more likely to cause flaws.

4. Steppings are entirely family dependent and there's no relationship between the character/number of the stepping and the changes that stepping brings. The only way to know what a stepping brings with it is to look at Intel's data sheets. New steppings may fix bugs (such as the VT-d bug that was present in Sandybridge-E C1 microprocessors that was fixed in C2), increase stability, reduce power consumption, or feature updated microcode.
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October 13, 2014 4:36:05 PM

Pinhedd said:

1. The actual ICs for a particular family of microprocessors are all manufactured in only a small number of facilities. They may then be shipped in bulk to secondary manufacturing facilities for testing, and packaging. For example, Intel has 22nm fabs in Oregon, Arizona, and Israel.

2. No clue. I doubt that they're statistically any better though.

3. It shouldn't matter where the chip is located on the wafer. Defects in the substrate are so small that there's little to no spatial relationship between them. The manufacturing process itself, which is position independent, is more likely to cause flaws.

4. Steppings are entirely family dependent and there's no relationship between the character/number of the stepping and the changes that stepping brings. The only way to know what a stepping brings with it is to look at Intel's data sheets. New steppings may fix bugs (such as the VT-d bug that was present in Sandybridge-E C1 microprocessors that was fixed in C2), increase stability, reduce power consumption, or feature updated microcode.


Thanks! :)  Best answer chosen by Kammex.
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