筆記
http://www.phonewreck.com/2009/06/19/iphone-3gs-teardown-and-analysis/
Let’s take a minute here to talk about the
new Applications Processor Core. Apple has chosen to go from the ARM 11
Samsung S3C6400 to the ARM A8 Samsung S5PC100 with this device.
iPhone 3Gs Block Diagram - In Progress
This is the single largest difference between the 3G and the
3Gs. Firstly the manufacturing process has been chopped from 90nm to
65nm. Pipeline depth has been boosted to 13 – stage from 8. More
importantly the clock speed of this newer processor rolls in at 600MHz
– opposed to the 412MHz core of the old – obsolete
None of this even takes the new PowerVR
graphics core into consideration. Apple is clearly thinking along the
lines of a gaming device for this puppy. The SGX is fully programmable
– like the graphics card on your PC or mac. Expect some sweet gaming
action in the near future.
@ 200MHz the SGX can pop 7M
triangles/second and render 250M pixels/sec. That’s roughly 7 times the
performance of the old, “obsolete” MBX.
It’s kind of like comparing your old 486 to a Pentium.
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