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Old 16-01-11   #1
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A Closer Look at the Sandy Bridge Die


Aside from a stack of Reese’s Peanut Butter Cups, I snagged something else of interest at my Intel meeting at CES 2011: a shot of some exposed Sandy Bridge processor die. As a recap SNB is available in three different physical die versions today: quad-core, dual-core with GT1 graphics and dual-core with GT2 graphics. The die sizes and transistor counts are below:
CPU Specification Comparison CPU Manufacturing Process Cores Transistor Count Die Size AMD Thuban 6C 45nm 6 904M 346mm2 AMD Deneb 4C 45nm 4 758M 258mm2 Intel Gulftown 6C 32nm 6 1.17B 240mm2 Intel Nehalem/Bloomfield 4C 45nm 4 731M 263mm2 Intel Sandy Bridge 4C 32nm 4 995M 216mm2 Intel Lynnfield 4C 45nm 4 774M 296mm2 Intel Clarkdale 2C 32nm 2 384M 81mm2 Intel Sandy Bridge 2C (GT1) 32nm 2 504M 131mm2 Intel Sandy Bridge 2C (GT2) 32nm 2 624M 149mm2 Now for the shot:
From left to right we have a dual-core GT2 die, a quad-core die and a 32nm Arrandale die with on-package 45nm HD Graphics GPU. There’s very little difference between the dual-core GT2 die and the quad-core die - each SNB core is fairly small at 32nm.
The comparison to Arrandale is also interesting as it makes dual-core SNB look pretty sensible. But keep in mind that we don’t know the full cost structure for manufacturing at 45nm vs. 32nm. Newer processes tend to be more expensive initially compared to older, more mature processes.


A Closer Look at the Sandy Bridge Die - AnandTech :: Your Source for Hardware Analysis and News
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