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[Anand] The Source of Intel's Cougar Point SATA Bug

post #1 of 35
Thread Starter 
http://www.anandtech.com/show/4143/t...point-sata-bug

Quote:
The problem in the chipset was traced back to a transistor in the 3Gbps PLL clocking tree. The aforementioned transistor has a very thin gate oxide, which allows you to turn it on with a very low voltage. Unfortunately in this case Intel biased the transistor with too high of a voltage, resulting in higher than expected leakage current. Depending on the physical characteristics of the transistor the leakage current here can increase over time which can ultimately result in this failure on the 3Gbps ports. The fact that the 3Gbps and 6Gbps circuits have their own independent clocking trees is what ensures that this problem is limited to only ports 2 - 5 off the controller.

One unused transistor in the design will cost Intel $1B.... someone is getting fired.
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post #2 of 35
At least one or more people likely got called into the office recently. Ooops. Thx for the details Duckie, I was wondering what the story was on this.
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post #3 of 35
Maybe they'll cripple all these boards into a P65 chipset or something. I can't imagine they'll go into the bin. If Newegg have stopped selling the CPU's they'll have a massive stock overload come Bulldozer. I smell price drop.
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post #4 of 35
i posted about this yesterday lol. i was right

Quote:
Originally Posted by trinstac View Post
the problem is with one transistor in the motherboard that is in the PLL drive for the SATA 3 ports. and it's not even the transistor - it's the power source. it is simply being overvolted and will wear over time.

they either ordered a too low voltage transistor or erroneously supplied the low voltage one with a not-so-low voltage.
23 hours ago...
Edited by trinstac - 2/1/11 at 8:14pm
post #5 of 35
Thread Starter 
Quote:
Originally Posted by Unstupituous View Post
Maybe they'll cripple all these boards into a P65 chipset or something. I can't imagine they'll go into the bin. If Newegg have stopped selling the CPU's they'll have a massive stock overload come Bulldozer. I smell price drop.
You can desolder the chipset and install a new one.
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post #6 of 35
It is insane how they can track down a single transistor. I remember watching an intel video and apparently they have machines that can do the same thing and look for a single transistor in an entire cpu and see how it is behaving.
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post #7 of 35
Must be a good new for AMD.
post #8 of 35
Quote:
Originally Posted by trinstac View Post
i posted about this yesterday lol. i was right



23 hours ago...
can u tell me my future?
post #9 of 35
AMD Saboteur in Intel's design team? DUN DUN DUN

Someone's a Spy
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post #10 of 35
Quote:
Originally Posted by vtech1 View Post
can u tell me my future?
only if you are designed and manufactured by Intel
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