- Dec 19, 2009
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This is all binning though. Yields were still far below 20 percent for both the full 512 shader version and the 448 shader part combined.
That would put yields of the new lower spec GTX480 at well under the two percent Nvidia saw last fall.
http://www.semiaccurate.com/2010/03/29/why-nvidia-hacked-gtx480/
Real yields 20%-30% according to actual checks. Also, the analyst said that nVidia has 10K units as of 4/17- while not a large amount by any means that also indicates that a total of 0 units sold from 3/28 when they started hitting retail and then and also for Charlie to be right no more chips can ever be sold(10K units maximum for the lifetime of the product). I'd say this article puts into sharp focus how wrong Charlie was, off by an order of magnitude on the yields and clearly off by a decent amount on the lifetime run of the GTX470/480 parts already under a month into availability.
The yields COULD have been under 2% "before" and still be at 20-30% "right now."
Clearly something doesn't jive here.
So is it that Charlie is off on the yield, or that he is off on the number of wafers, or something else?
Also this article implies only 1/3rd the total number of cards that Charlie claimed would be available. (10k vs 30k)
In 2-3 weeks? Charlie stated 2% on March 29th.
As things stand, the 9,000 risk wafers seem to have produced less than 10,000 GTX480s and about twice that many GTX470s if the rumored release numbers are to be believed. That would put yields of the new lower spec GTX480 at well under the two percent Nvidia saw last fall.
I just did a blog on this, TSMC 40nm, where I talked with Dr. Shang-Yi Chiang, Vice President of TSMC R&D on 20nm, 28nm, and 40nm.
Redefining the Foundry Model: TSMC versus GlobalFoundries
Nvidia designed in 4B+ single vias (double via's are highly recommended at 40nm) and is paying the yield price. 40nm is yielding fine for dozens of other companies such as Altera, Qualcomm, etc....
TSMC 28nm has restricted design rules for better yield. Lets hope Nvidia follows them.
Hmm closest thing I could find to a 2% claim in the March 29th article was this..
Is that what you're talking about? Cuz he makes a very caveated statement here.
And the rumoured release numbers ended up being 1/3rd of what he claimed to be hearing.
Which means that his estimates of yields based on 9,000 wafers must be way off.
So that begs the question of how he managed to get an understanding that 9,000 wafers had been run at TSMC and already harvested for chips.
Clearly the problem is he managed to come up with a 9,000 wafer number that doesn't fit with yields or production numbers. The flawed yield calculation then came from this 9,000 wafer figure, which was either wrongly interpreted or just flat out wrong.
Yea I wasn't really addressing that, just the 2% claim. It's hard to put it all together. Does his 2% claim only apply to the first revision (my impression)? Are all the statements properly using yield to apply to all usable chips or is it including only fully functional GTX 480 parts? If there was only 1 9,000 wafer run have we seen all the GPUs (30,000?) from it?
Charlie charlie yadda yadda
Can anyone attest to the reliability of Needham & Co?
Can anyone attest to the reliability of Needham & Co?
I have to give the obligatory 'competition is good' admonition. If Nvidia becomes insolvent, as Charlie alluded to, and it's only ATI and Intel, we are fucked.
Its going to take alot more than one bad product launch to sink nvidia.
too true, but is you look at their current product offerings they are diminishing. With the loss of the chipset business, low volume of fermi, and low adoption of tegra where do you see the revenue coming from to cover the r&d for future products?