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芯片组厂商对于创新声卡的围剿至今让人历历在目,甚至已经有人担心GPU 也会走上相同的道路。当然,这种担心多少显得有些多余,因为主流显卡还远不能满足近乎疯狂的3D 游戏,而且显卡有着太多的客观技术指标,这并非芯片组厂商在短时间内所能弥补。然而如果就此高枕无忧,那就等于是坐以待毙。随着PCI Express 接口时代的道来,显卡市场正面临一场由市场到技术的全面洗牌,此时性价比又不得不重新引起厂商的重视。通过显存共享技术,显卡的成本将能大幅度降低,或许这样才能让独立显卡有更多的资本去对抗虎视眈眈的整合显卡。第一章回眸AGP PCI Express 孕育新希望当显卡接口由PCI 向AGP 跃迁之时,厂商最大的期望无非是利用其相对较高的带宽,通过全新的总线来达到划分部分内存作为辅助显存的目的。事实上,显存一直是显卡发展的瓶颈之一,不仅显存带宽一直困扰着业界,显存容量也是急待解决的问题。然而随着MRT 多渲染目标技术的普及应用,GPU 所承担的渲染工作量呈几何级增长,此时显存带宽都已经捉襟见肘,更不用说最高带宽只有2. 1GB/s 的AGP 8X 通道。
Chipset manufacturers for innovative sound card encirclement so far, people are vivid, and some people have even worried about the GPU will embark on the same road. Of course, this concern is somewhat superfluous, because the mainstream graphics card is far from satisfied with almost crazy 3D games, and the graphics card has too many objective technical indicators, this is not chipset manufacturers can make up in a short period of time. However, if this sit back and relax, it would be tantalizingly waiting to die. With the era of PCI Express interface, the graphics card market is facing a full reshuffle from the market to the technology, then the cost has to re-attract manufacturers attention. Through the memory sharing technology, video card costs will be significantly reduced, perhaps in order to allow more independent graphics cards to fight against the eye of the integrated graphics card. The first chapter looks at AGP PCI Express bred new hope When the graphics interface transition from PCI to AGP, the biggest manufacturers expectation is nothing more than the use of its relatively high bandwidth, through the new bus to achieve the purpose of dividing part of the memory as a secondary memory. In fact, video memory has always been one of the bottlenecks in the development of graphics cards. Not only memory bandwidth has plagued the industry, but memory capacity is also an urgent issue to be solved. However, with the popularization and application of multi-render MRT technology, the rendering workload borne by the GPU has increased geometrically. At this time, the memory bandwidth has been stretched, let alone the AGP 8X channel with a maximum bandwidth of only 2.1 GB / s.