SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?


To: Rink who wrote (219312)12/6/2006 6:08:04 PM
From: dougSF30Respond to of 275872
 
300 mm^2 was what I thought was a conservative (tried to err on small side) estimate from the photo of the part held up by Henri. (The package is known to be 40mm square)

I agree about the logic scaling. It would be nice to see a Rev G die photo (hello, AMD?) to confirm that as the source of the problem in Brisbane, as well.



To: Rink who wrote (219312)12/6/2006 6:24:02 PM
From: Hans de VriesRead Replies (2) | Respond to of 275872
 
Actually the core scales better as this old image suggest:

(1) The "Green Barcelona" is a paper cut and paste work which was
hanging on a wall. The cores are larger as on the actual die.

(2) The Rev. F picture (from PC watch impress?) erroneously
includes test circuits within the outline which makes the core
relatively smaller.

This picture uses the actual QC die and the correctly outlined Rev.F:

chip-architect.com

The difference is quite visible.


Regards, Hans.



To: Rink who wrote (219312)12/6/2006 6:38:35 PM
From: justaviewRead Replies (1) | Respond to of 275872
 
Rink>AMD shrunk the logic part of their 65nm chip much less than expected (see also below pic from Hans). L2 cache shrink was fine. We don't know why AMD shrunk the logic part (the cores, xbar) much less. It's a design trade off of some kind.

I don't see how you can compare scaling between two different cores: Rev F and Rev H. The only way to compare scaling is to compare identical cores as in Rev F and Rev G.