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65nm AMD chips leaky

post #1 of 24
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http://investorshub.advfn.com/boards...ge_id=21353453

NOTE: I don't know if this is a trustworthy source or not.

Quote:
I looks to me like AMD splits 65nm parts into three buckets: let's call them low, medium, and high leakage.

1. The low leakage parts are used for the 4800+ and 5000+ products. They are lower leakage than AMD's best 90nm parts. This is good news. They draw about 8% less current at 1.1V, and about 23-28% less current at 1.35V.

2. The medium leakage parts are used for the 4000+ and 4400+ products. They are somewhat as high in leakage than AMD's leakiest parts on 90nm, and definitely leakier than their 90nm median parts. The 4000+ part, for example, draws more current at 1.1V than AMD's downbinned 3800+ part on 90nm. At 1.325V, they are drawing more current than AMD's high end 90nm parts at 1.35V. This is certainly not good news, and suggest that the median of AMD's 65nm process leakage is worse off than at 90nm.

3. The high leakage parts are downbinned to the 3600+ chip. Although this part has been removed from the current lineup, it's not clear whether they are still producing these and selling them as 4000+ parts, or whether their process has improved. At any rate, these parts are insanely leaky. A 1.1V, they are drawing almost 50% more current than AMD's worst 90nm part. And good thing AMD restricted the voltage to 1.3V, because even at this voltage, the leakage towers over the entire 90nm product line.

I think these results are pretty interesting, and may explain why AMD has not been able to ramp 65nm. The leakage is killing them, and only their lowest leaking parts are able to hit 2.6GHz at 1.35V, and still maintain a reasonable power envelope.
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post #2 of 24
I think I'd rather have AMD take their time to produce a quality chip. Then have them rush it out now if that's the situation. I mean it took Intel how long to come back? Take your time AMD and do it right
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post #3 of 24
overclockers.com and the Inquirer.net have both published a similar story about the report that guy created.

It does fit the bill of several things AMD has been doing, such as decreasing the clock speeds of Barcelona to 2.3 ghz, with the prediction to get them to 2.6. Now we know why, they plan on increasing them when they fix the leakage issue.
    
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post #4 of 24
Quote:
Originally Posted by Modki View Post
I think I'd rather have AMD take their time to produce a quality chip. Then have them rush it out now if that's the situation. I mean it took Intel how long to come back? Take your time AMD and do it right
QFT right there.
'bout time.
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'bout time.
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post #5 of 24
Quote:
Originally Posted by Modki View Post
I think I'd rather have AMD take their time to produce a quality chip. Then have them rush it out now if that's the situation. I mean it took Intel how long to come back? Take your time AMD and do it right
Seconded. Don't rush out crap, like you did with AM2 and QuadFX.
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post #6 of 24
THIS EXPLAINES ALOT

My cpu needs 1.475v (1.52v Load) to run 2699Mhz (2.7Ghz). I think this is why . When I first got the CPU. It just came out on NCIX for 129 (no heatsink). So I got the sucking CPU! YAY
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post #7 of 24
I just want to see the new architecture in action.
post #8 of 24
Well... I can run mine at 3 GHz at 1.35V folding stable... I guess my leakage isn't that bad.
    
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post #9 of 24
WTH does leakage do?

Make it unstable?
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post #10 of 24
Well now you have a good reason to spend a little extra and get a higher multi chip. This pretty much means that anything over the 5000+ will overclock better, since AMD is actually binning these chips according to how much current they leak and the bad ones get the lower PR designation while the good ones get the higher PR designation.
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