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Old 2021-12-25, 13:20   #1
MalumaDev
 
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Question Prime95 error always in the 6 worker at the beginning

Hi, I have built a new workstation and I have launched Prime95 to check it. When I lunch the memory test, the worker number 6 crash always at the beginning. Someone know if it's possible that it's a hw problem or I can try to fix that? I have an AMD 5900x and crucial ballistix 3200 ( no oc. The problem occure either with and without the amp profile)
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Old 2022-01-22, 07:36   #2
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Quote:
Originally Posted by MalumaDev View Post
Hi, I have built a new workstation and I have launched Prime95 to check it. When I lunch the memory test, the worker number 6 crash always at the beginning. Someone know if it's possible that it's a hw problem or I can try to fix that? I have an AMD 5900x and crucial ballistix 3200 ( no oc. The problem occure either with and without the amp profile)
The CPU was faulty!!
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Old 2022-04-30, 01:25   #3
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The CPU was faulty!!
Hi how did you know that the CPU was faulty? I'm having the same problem on my Ryzen 5 3600
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Old 2022-04-30, 23:39   #4
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Quote:
Originally Posted by MalumaDev View Post
The CPU was faulty!!
Honestly, how is a CPU faulty? Each particular model type are all the same down to the micron. If one is bad then unknown thousands would be bad.
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Old 2022-04-30, 23:43   #5
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Quote:
Originally Posted by storm5510 View Post
Honestly, how is a CPU faulty? Each particular model type are all the same down to the micron. If one is bad then unknown thousands would be bad.
Are you familiar with the concept of binning?

Last fiddled with by chalsall on 2022-04-30 at 23:46 Reason: Give an immediate reference.
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Old 2022-05-01, 15:09   #6
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Quote:
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Are you familiar with the concept of binning?
I've never heard of this before, but it makes sense.
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Old 2022-05-01, 15:16   #7
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Also things do age, wear out and fail. (Hence your truck maintenance thread.) https://www.student-circuit.com/lear...re-mechanisms/

Last fiddled with by kriesel on 2022-05-01 at 15:17
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Old 2022-05-02, 00:56   #8
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Also things do age, wear out and fail.
I found this article rather interesting. And, relevant to this conversation. https://spectrum.ieee.org/chip-x-ray
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Old 2022-05-02, 03:39   #9
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Quote:
Originally Posted by storm5510 View Post
Each particular model type are all the same down to the micron.
It goes smaller than one micron.

There are always defects in the resulting chips. Some defects are fatal, some are manageable, some are imperceptible. Impurities in the substrate and the doping. Poor penetration of the implants. Power fluctuations in the equipment. And about a million other things that make each chip, each transistor in each chip, unique.
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Old 2022-05-02, 14:23   #10
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As a percentage, I wonder how many made by Intel or AMD get "binned?" Both must run these things in lots, each with a unique identifier. Their quality control scheme would be a nightmare if they didn't.
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Old 2022-05-02, 14:34   #11
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Quote:
Originally Posted by storm5510 View Post
As a percentage, I wonder how many made by Intel or AMD get "binned?"
All of them.

Nothing goes out untested. Faulty ones are discarded, weak ones are sold cheap, better ones are sold for a premium.

Yield percentage is very important to them. Too many discarded chips, or too few premium chips, and people start asking awkward questions.
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