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[INR] Intel Identifies Chipset Design Error, Implementing Solution - Page 30

post #291 of 449
Why are so many people hoping that AMD pushes up their scheduled releases? So they won't fully and properly test their products like, let's see, Intel just did? If AMD pulled this boner then it would most likely put them under permanently. Intel has the money to recover. AMD does not.
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post #292 of 449
Sucks for early adopters but this is why I usually wait a while.
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post #293 of 449
Lucky im still rocking a E8400
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post #294 of 449
I have no problems with my board what so ever. So does this mean we are going to have to ship our boards back to companies?
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post #295 of 449
this article is pretty interesting as to why intel explained their recall, and how it doesn't make sense.

http://semiaccurate.com/2011/01/31/i...old-any-water/
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post #296 of 449
Quote:
Originally Posted by Behemoth777 View Post
I have no problems with my board what so ever.
I did not have a problem with Nvidia bump-gate issues but thousands of others did.
post #297 of 449
Some people in here need to turn the "panic mode" button off. Doubtful that your SB rig will stop working from one day to the next. By the time you guys will notice some loss in performance, the replacement mobos will already be on the market and all the manufacturers will give them to SB users.
 
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post #298 of 449
Quote:
Originally Posted by EvanPitts View Post
I don't know about that - how many other defects are hidden behind this? And if SB itself is not defective, then why are the distributors taking SB processors back?
Its already been stated that they did that to deter people from getting the mobos also.
No sense in buying a cpu if you cannot get a mobo for it.
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post #299 of 449
This sucks for me because I'm currently stuck with only a laptop. I had an i5 2500k rig sitting in my newegg shopping cart waiting on Friday. I guess I'll just grab a cheap AM3 mobo and a 965 Black for now, and upgrade when the smoke clears. Looks like my daughter is getting an upgrade this summer. I'm not paying an extra $100+ for a 1366 rig right now, as there is absolutely no point.
 
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post #300 of 449
Anandtech article: http://www.anandtech.com/show/4143/t...point-sata-bug

Quote:
Originally Posted by Anand
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.
You can coax the problem out earlier by testing the PCH at increased voltage and temperature levels. By increasing one or both of these values you can simulate load over time and that’s how the problem was initially discovered. Intel believes that any current issues users have with SATA performance/compatibility/reliability are likely unrelated to the hardware bug.

One fix for this type of a problem would be to scale down the voltage applied across the problematic transistor. In this case there’s a much simpler option. The source of the problem is actually not even a key part of the 6-series chipset design, it’s remnant of an earlier design that’s no longer needed. In our Sandy Bridge review I pointed out the fair amount of design reuse that was done in creating the 6-series chipset. The solution Intel has devised is to simply remove voltage to the transistor. The chip is functionally no different, but by permanently disabling the transistor the problem will never arise.

To make matters worse, the problem was inserted at the B-stepping of the 6-series chipsets. Earlier steppings (such as what we previewed last summer) didn’t have the problem. Unfortunately for Intel, only B-stepping chipsets shipped to customers. Since the fix involves cutting off voltage to a transistor it will be fixed with a new spin of metal and you’ll get a new associated stepping (presumably C-stepping?).

While Steve wouldn’t go into greater detail he kept mentioning that this bug was completely an oversight. It sounds to me like an engineer did something without thinking and this was the result. This is a bit different from my initial take on the problem. Intel originally characterized the issue as purely statistical, but the source sounds a lot more like a design problem rather than completely random chance.
So if you increase voltage to the PCH, you will accelerate the death of the SATA 3Gbps ports. Intel fixed the issue by removing voltage/transitor from the PCH. An Intel engineer(s) introduced the problem in the B stepping that went out to customers. Earlier revisions did not exhibit this problem.

Very careless by Intel.

Quote:
Originally Posted by Anand
If you have a desktop system with six SATA ports driven off of P67/H67 chipset, there’s a chance (at least 5%) that during normal use some of the 3Gbps ports will stop working over the course of 3 years. The longer you use the ports, the higher that percentage will be. If you fall into this category, chances are your motherboard manufacturer will set up some sort of an exchange where you get a fixed board. The motherboard manufacturer could simply desolder your 6-series chipset and replace it with a newer stepping if it wanted to be frugal.
It is interesting how Intel told business analysts about the defect before they told manufacturers. The skeptic in me wants to believe Intel wanted to protect their stock prices more than stopping the problem ASAP.
Edited by Riou - 1/31/11 at 4:53pm
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