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Zego
The ZEGO ("Zest to go") is a rackmount server platform built by Sony, targeted for the video post-production and broadcast markets. The platform is based on Sony's PlayStation 3 as it features both the Cell Processor as well as the RSX 'Reality Synthesizer'. It is aimed to greatly speed up postproduction work (in particular in the computationally extremely taxing 4K resolution), 3D rendering and video processing. In some respects it is rather similar to IBM's QS20/21/22 blades (such as used in the Roadrunner supercomputer that took the top spot in the Top500 in May 2008), although Sony seems to target the DCC (Digital Content Creation) markets rather than scientific like IBM, which can be seen by the inclusion of the RSX graphics processor in the ZEGO platform.
ZEGO runs Fixstars's Yellow Dog Enterprise Linux, which was also Sony's favourite Linux distribution for the PlayStation 3.
==Architecture==
The architecture is not identical to the PlayStation 3. One difference is that the BCU-100 has 1 GB XDR RAM instead of the PlayStation 3's 256 MB. Video RAM is missing in Sony's system diagrams, but it is listed as 256 MB (like the PlayStation 3) further down in the tech specs. The XDR memory is shared by both the Cell and RSX. Sony uses the SCC (Super Companion Chip) to handle I/O tasks (HDD, USB 2.0, Gigabit Ethernet and other unspecified I/O); the SCC has its own dedicated memory of 1GB DDR2 as well as a Memory Extension Adapter connected via PCI Express that can hold up to 8 GB. Another option for the single PCI express slot is a Video Display Board with a DVI-I output.
Further, the Cell in the BCU-100 offers the full 8 SPUs that Cell is manufactured with, as opposed to the 6 SPUs available in the PlayStation 3, which has one SPU disabled to improve manufacturing yields and one reserved for the system. This gives the BCU-100 an extra 33% potential CPU-power (or 51.2 GFLOPS more).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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