Intel Quark family of embedded ultra low power microprocessors was expanded this week with a new X1020 SKU. Quark processors are based on a single Pentium core, that adds 512 KB of on-chip SRAM for faster memory access, an SIMD unit, a single-channel DDR3 memory controller, and several standard interfaces, such as PCI-e 2.0, Ethernet and USB 2.0. All Quark chips run at 400 MHz, and have 16 KB of unified L1 cache. With just 2 Watt - 2.2 Watt TDP, the processors are a good fit for low power applications, such as embedded devices.
The difference between all members of Quark family are in optional features. The new Quark X1020 supports a couple of them, namely ECC memory and Secure Boot technology. The latter technology ensures that only authorized software is executed on the platform. The processor supports another feature, which is encoded as "S1" in its part number. At this time we do not have reliable information on what it could be. The X1020 operates in commercial temperature range, that is from 0°C to 70°C. The X1020 is priced at $11.45.
Update (May 2): Another Quark processor was added to Intel's product database. This time it's an X1021, a look-alike of the X1021D, that has the mysterious "S1" feature enabled. The chip also supports ECC memory protection and the Secure Boot technology, and operates in extended temperature range from -40°C and up to +85°C. The official price of the X1021 is $13.39.
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Mar 13, 2014: Intel expands Quark family with new products