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新的PCIe2.0幾乎是PCIe的2倍頻寬, 從2.5GT/s,提高到5GT/s.
所以一條PCI Expressx16的頻寬可達16GBps.
新的特點如下:
* Enhanced Completion Timeout Control, which includes required and optional aspects, reduces false timeouts and increases the ability to ‘tune’ the timeouts.
* Function Level Reset and Access Control Services, giving enhanced robustness and support of certain IOV features -- though this feature is labeled as optional/
* Slot Power Limit Changes to allow for higher powered slots, which support the newer, high-performance graphics cards. This new feature works in tandem with the 300W Card Electro-mechanical specification.
* Speed Signaling Controls to enable software to determine whether a device can operate at a specific signaling rate, which can be used to reduce power consumption, as well as provide gross level I/O to memory.
轉 http://www.dailytech.com/article.aspx?newsid=5718
所以一條PCI Expressx16的頻寬可達16GBps.
新的特點如下:
* Enhanced Completion Timeout Control, which includes required and optional aspects, reduces false timeouts and increases the ability to ‘tune’ the timeouts.
* Function Level Reset and Access Control Services, giving enhanced robustness and support of certain IOV features -- though this feature is labeled as optional/
* Slot Power Limit Changes to allow for higher powered slots, which support the newer, high-performance graphics cards. This new feature works in tandem with the 300W Card Electro-mechanical specification.
* Speed Signaling Controls to enable software to determine whether a device can operate at a specific signaling rate, which can be used to reduce power consumption, as well as provide gross level I/O to memory.
轉 http://www.dailytech.com/article.aspx?newsid=5718
