Silicon Investor (SI) -- The First Internet Community

STOCKTALK

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.

Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Hans de Vries who wrote (98743)	3/16/2000 5:14:00 PM
From: Scumbria	Respond to of 1571038

Hans, The Willamette has more and shorter pipeline stages as Coppermine which could do the slowest ALU operations in 1 cycle. This is not possible anymore. The slowest ALU operation takes about 1.5 cycle (not 0.5) The latter would mean that the ALU would be 3 times faster with the same process... Which is not the cas Where did you get this information from? According to the literature released at the MDR dinner last week, the ALU on Willy operates in 1/2 cycle, and can forward immediately to the next clock phase. The Willy pipe has only one execute stage. Scumbria

To: Hans de Vries who wrote (98743)	3/17/2000 1:37:00 AM
From: Scumbria	Read Replies (1) \| Respond to of 1571038

Hans, The Willamette has more and shorter pipeline stages as Coppermine which could do the slowest ALU operations in 1 cycle. This is not possible anymore. The slowest ALU operation takes about 1.5 cycle (not 0.5) The latter would mean that the ALU would be 3 times faster with the same process... Which is not the case. I thought a little more about your post. The logic you are using would be correct if Willy's ALU used the same circuit design as PIII. I believe that Willy uses some clever type of dynamic logic to achieve it's fast ALU performance. Scumbria