Introducing the Intel Galileo development board, the first product in a new family of Arduino*-compatible development boards featuring Intel architecture.
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The Intel Galileo board features a flexible, low-power, 400MHz Quark SoC X1000
http://www.intel.com/support/galileo/index.htm?wapkw=galileo
http://www.eetimes.com/document.asp?doc_id=1319701
The Intel Quark is a 32-bit processor that runs with a maximum clock speed of 400 MHz. This seems to position the chip as targeting the high-end ARM Cortex-M4F class and the low-end ARM Cortex-A series devices. The specific chip carried on the Galileo is the Quark X1000, which has the following features:
Single core
400MHz maximum clock speed
512kb embedded SRAM
Support for external, single-channel DDR3 DRAM (up to 2 GB)
Support for IA 32-bit Pentium x86 instruction set
Out-of-order processing
Integrated floating-point unit
Integrated PCIe X1
10/100 Ethernet PHY
USB2 Device and Host
SD/SDIO/eMMC
I2C
SPI Master
UART
0.593 pitch FCBGA package, 393 solder balls, 15mm x 15mm