If a 65nm design was made with 45nm but keeping the 65nm die size, what would be the result of this extra manufacturing 'resolution' and precision?
Putting aside that the transition in process nodes is not a simple copy and paste, and the less profit per wafer, wouldn't the yield be increased?
E.g. A 65nm Core Duo (Yonah) with a die size of 90.3 mm² (according to Wikipedia). Put it onto a 45nm process and stretch the masks so the finished die has the same (90.3 mm²) size. The circuit traces would be much more accurate and robust, leading to the thought that the voltage/frequency could really be pushed up.
Or to take another approach get a 45nm design (e.g C2D Wolfdale, 107 mm², 6MB L2-Cache), lop off half of its ample cache and then stretch it back out to (roughly) 107 mm² (for reference the Core i7 die size is 263 mm²). I would definitely trade half the cache for a retail clock speed of 5-6Ghz.
Well that's just my imagination. I'm interested to know what the actual results would be. Higher efficiency? Lower Power? Hotter/cooler? Most importantly, the clocks: amazingly high?
Putting aside that the transition in process nodes is not a simple copy and paste, and the less profit per wafer, wouldn't the yield be increased?
E.g. A 65nm Core Duo (Yonah) with a die size of 90.3 mm² (according to Wikipedia). Put it onto a 45nm process and stretch the masks so the finished die has the same (90.3 mm²) size. The circuit traces would be much more accurate and robust, leading to the thought that the voltage/frequency could really be pushed up.
Or to take another approach get a 45nm design (e.g C2D Wolfdale, 107 mm², 6MB L2-Cache), lop off half of its ample cache and then stretch it back out to (roughly) 107 mm² (for reference the Core i7 die size is 263 mm²). I would definitely trade half the cache for a retail clock speed of 5-6Ghz.
Well that's just my imagination. I'm interested to know what the actual results would be. Higher efficiency? Lower Power? Hotter/cooler? Most importantly, the clocks: amazingly high?