SidePort memory will not work if an independent graphics card is installed.
Most modern computer processors come with an integrated graphics processor (IGP). System memory is shared with these IGPs through dynamic memory allocation (DMA). AMD has offered SidePort memory as an alternative for or complement to shared system memory.
SidePort Memory
SidePort memory is dedicated to the IGP of a motherboard. The memory is installed in the SidePort of the computer's motherboard, and is used only for supporting the system's graphics processor.
SidePort DDR3
DDR3 or double data rate x3 memory is the most recent generation of random access memory (RAM), as of 2010. AMD system boards that use SidePort memory support DDR3 RAM.
Benefits
According to Tom's Hardware, SidePort memory alone cannot compete with the performance of an independent graphics card. However, when used in conjunction with shared system memory, SidePort memory can greatly boost the performance of IGPs.
Independent Graphics
If the user installs an independent graphics card, the IGP is effectively overridden. The SidePort memory will not work without the IGP. Therefore, SidePort memory will not work with an independent graphics card.
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