Microsoft Corp. held a meeting to present the Xbox 360 in Tokyo on May 13, 2005. The company only showed an Xbox 360 mockup. It was almost as large as a small desktop PC. Teams in Japan and the US jointly designed the new Xbox. It is said to have been the Japanese team, who suggested green illumination used in the power button on the front surface. As it was a mockup, part on the back surface of the chassis, where connectors to peripherals such as a display are supposed to be plugged, was left vacant.

The Xbox 360 features a multicore microprocessor integrating three PowerPC cores, 1 MB secondary cache memory and other processors. The operating frequency is 3.2 GHz. System-floating point performance reaches 115.2 GFLOPS, approximately 80 times 1.466 GFLOPS achieved by the first-generation Xbox. Each PowerPC core is equipped with VMX-128 units, which are capable of SIMD computation using 128-bit registers. A VMX-128 register is capable of 128 entries. Each PowerPC core features two VMX-128 units to process two threads in parallel.

The operating frequency of the graphics LSI in it, co-developed with ATI Technologies, Inc., is 500 MHz. It integrates 10 MB DRAM. Polygon performance is said to extend to 500 million triangles per second, about four times that of the conventional Xbox. The pixel fill rate is 16 Gpixels per second.

The data transfer rate of the microprocessor’s I/O interface reaches 21.6 GB/s, approximately 20 times that of the conventional Xbox, while the data rate of the primary memory interface is 22.4 GB/s, 3.5 times that of the Xbox.

From NikkeiBP

似乎这年头转个360度才叫COOL,Yahoo如此，Microsoft也不示弱…
微软于美国当地时间2005年5月12日晚在音乐娱乐频道“MTV”的30分钟特别节目中，公开了新一代Xbox。其名称为“Xbox 360”。并预定2005年底在北美、欧洲和日本等地开始上市。
从外观上看，与小型台式机相差无几(据说造型由日美联合设计小组联手设计)，采用与新一代PS2一样的竖置方式(旧系列Xbox为横卧方式)，虽然展示的外壳颜色为白色，但是据称可通过更换面板，将Xbox 360的外壳更换成蓝色等颜色。
主机内采用集成3个PowerPC内核与1MB二级缓存的多内核架构微处理器,工作频率3.2GHz，浮动小数点运算性能高达115.2GFLOPS，与1.466GFLOPS的第一代“Xbox”相比，处理性能提高了约80倍。为了并行处理2个线程，Xbox 360配备了2组采用128位寄存器、可进行SIMD运算的“VMX-128”的单元,该单元的寄存器入口数为128个。
与加拿大ATI科技公司联合开发的图像处理芯片的工作频率为500MHz。集成了10MB DRAM显存。多边形绘图性能相当于现行Xbox的约4倍，每秒可描述5亿个多边形。像素填充率为16G像素/秒。 微处理器输入输出接口的数据传输速度为21.6GB/秒，相当于Xbox的约20倍。与内存之间的接口传输速度为22.4GB/秒，约为Xbox的3.5倍。
采用DVD-ROM光驱，内置的“Media Center Extender”功能，能够访问家中安装“Windows XP Media Center Edition 2005”操作系统的电脑。可在Xbox 360上播放电脑上保存的电视节目、数码照片，以及音乐文件等内容。
看着以上这些技术参数，我的第一感觉，这还是个游戏机吗？先别说跟台式机相差无几的大小已是最恶外，为了玩趟游戏，甚至还要花比自家PC还贵，配置还高档的东东带回家，不对，是抱回家，心里怎么也觉得有点不舒坦…
我不是反对游戏越做越华丽，主机越做越迅速，只是一直坚信未来既是网络，网络既是终端。把这么一个笨重的，功能还较单一的，价格还不便宜的家伙，或者更抽象的说应用成本，推至到最终用户这边，实在是个不怎么样的idea…