AMD在10月份發佈RX 6000系列顯示卡when,還推出了一項新技術,名為“智慧訪問顯存”(Smart Access Memory/SAM)科技,可以讓銳龍5000與RX 6000顯示卡合體提升效能。SAM科技解决了CPU與GPU之間的一個瓶頸問題。
In traditional Windows-based computer systems,Limited by PCIe specification,Only via Base Address Register (BAR) Map 256MB of system memory to GPU memory at a time,This means that the processor can only access 256MB of video memory (VRAM) at a time,This seriously affects the data transfer efficiency between system memory and GPU memory.,Limits system performance。
AMD just released the latestRadeon RX 6800When a new card in the series,One of the new technologies is called SAM(Smart Access Memory)technology,Allows the CPU to fully access the GPU's display memory,No more data exchange through Windows mapping,但暫時只限於 A 卡配 AU,不過 AMD 前日透露正與 NVIDIA 及 Intel 討論,期望可以開放 SAM 技術讓不同 CPU、不同 GPU 都能使用。
AMD在RDNA 2中加入了的全新Smart Access Memory技術,When users use AMD’s new generation Ryzen 5000 series processor,PCIe Mapping is no longer used,CPU can directly access GPU memory,Completely remove the read and write bottleneck between CPU and GPU。


Via AMD Smart Access Memory,Datapaths expanded to exploit the full potential of GPU memory,This eliminates performance improvement bottlenecks by leveraging PCI Express bandwidth.,This feature will provide users with a better gaming experience。According to data released by AMD,SAM technology can improve performance by 5-11% on Ryzen 5000+RX 6000 graphics cards,Game performance can be improved by approximately 6%,Especially for games that use a lot of Texture maps,The performance improvement will be more obvious。
前日AMD副總裁暨Radeon事業群Scott Herkelman透過,在SAM技術正與 NVIDIA進行討論,讓AMD CPU搭配NVIDIA顯示卡時亦可以使用SAM,同時亦向 Intel 提出開放 SAM 技術的意願。
考慮到SAM科技需要顯卡及主機板BIOS的配合才行,所以AMD、NVIDIA及Intel三方合作是有必要的,這樣才能讓玩家自由組合,未來很大機會不論任何 CPU 配任何卡都能啟動,A卡+IU、A卡+AU、AU+N卡、N卡+I等等,而不是局限某個平臺。
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