SpursEngine
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SpursEngine is a microprocessor from Toshiba built as a media oriented coprocessor, designed for 3D- and video processing in consumer electronics such as set-top boxes and computers.
The SpursEngine is a stream processor powered by four Synergistic Processing Elements (SPE), also used in the Cell processor featured in Sony PlayStation 3. These processing elements are fed by on chip H.264 and MPEG-2 codecs and controlled by an off die host CPU, connected by an on chip PCIe controller (in contrast to the Cell processor which has a on chip CPU (the PPE) doing similar work). To enable smoother interaction between the host and the SpursEngine Toshiba also integrated a simple proprietary 32-bit control core. The SpursEngine employs dedicated XDR DRAM as its working memory.
The SpursEngine is designed to work at much lower frequencies than the Cell and Toshiba has also optimized the circuit layout of the SPEs to reduce the size by 30%. The resulting chip consumes 10-20 W of power.
The SpursEngine is accessible to the developer from a device driver currently in development for Windows and Linux systems.
[edit] Implementation
In April 2008 Toshiba ships samples of the SpursEngine SE1000 device. The SpursEngine has four SPUs and operates at 1.5 GHz, peaking at 48 Gflops, 12 Gflops per SPU. The accelerator card connects to a 1x PCI Express bus and has 128 MB XDR DRAM with 12.8 GB/s.
