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Technology Stocks : AMD:News, Press Releases and Information Only!

AMD 255.95

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To: Ali Chen who wrote (6385)	5/29/1998 3:13:00 PM
From: Time Traveler	Read Replies (1) of 6843

Ali, apparently you have never laid out any integrated circuits (IC) or any printed circuit boards (PCB). For your information, the rule of thumb is: - The more transistors you add to the IC, the less dense it has to be due to added complexity in the wiring (metal layers). - The more components you add to the PCB, the less dense it has to be due to added complexity in the wiring (traces). Given K6's (0.25um) density of 8.8M / 68 mm^2 = 0.129M / mm^2 and K6-2's density of 9.3M / 81 mm^2 = 0.115 mm^2, there is an 11% in transistor density reduction going from K6 to K6-2 but the metal wiring density would easily go up by that much due to such extreme complexity of processor. Time Traveler personally does not believe K6 and K6-2 cores are any different. The aggressiveness in design rules thus still applies to the core of K6-2. Perhaps, AMD learned a lesson by utilizing a more conservative design rule for the 3D add-on. Time Traveler

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