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Edit by Luke Soules:

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[* standard] After further examination, we found a way to open the logic board without completely destroying it like Think Secret did.
[* standard] Samsung chip underneath the metal shield on the left side of the board on the left. Ours reads K9MCGD8U5M. The 4 GB model that Think Secret took apart had K9HBG08U1M on it, which is a 4 GB chip
[* standard] Samsung memory stacked with a [link|http://www.engadget.com/2007/07/01/iphone-processor-found-620mhz-arm/|620 MHz ARM architecture processor], ARM1176JZF. Could be a Samsung S3C6400. Numbers: 339S0030ARM, 8900B 0719, NOD4BZ02, K4X1G153PC-XGC3, ECC457Q3 716. The processor is likely stacked on the SDRAM, which could be two 512 Megabit chips. The processor could have H.264 and MP3 hardware decoding built in.
[* standard] The chip above the ARM is a Wolfson audio chip. Part numbers WM8758BG and 73AFMN5.
[* standard] The chip underneath the ARM is a Linear Technology 4066 USB[link|http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1037,C1078,C1088,P12292|USB Power Li-Ion Battery ChargerCharger], which Apple uses in the iPods as well.
[* standard] The chip underneath the ARM is a Linear Technology 4066 USB[link|http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1037,C1078,C1088,P12292|USB Power Li-Ion Battery ChargerCharger], which Apple uses in the iPods as well.