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楼主 |
发表于 2006-5-6 21:46:04
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不同的芯片组以及设备会占用主板所支持的如我的4G中的一部份,
所以看来我的用只1G*3+256MB*1了,或许这才不浪费。
(与操作系统有一定的联系但是与上面的观点联系更大,如大家有空可以看一下如)
<<Intel® Chipset 4 GB SystemMemory SupportWhite Paper>>
嘿嘿,摘部份内容如下
Due to PC architectural requirements such as motherboard resources and OS limitations,
desktop platforms using larger memory may be unable to take full advantage of all memory
populated on the system.
• When systems with chipsets that support 4 GB or less of system memory are populated with
the maximum system memory of 4 GB, the operating system (OS) may report a lower amount
of available memory
• Standard PC Architecture System Resources require addressing which overlaps physical
memory below 4 GB:
⎯ System BIOS
⎯ Motherboard Resources (I/OxAPIC)
⎯ Memory Mapped I/O
⎯ PCI Express* Configuration Space
⎯ Additional PCI Device Memory (Graphics Aperture)
⎯ VGA Memory
⎯ Others as included, etc.
• These requirements may reduce the addressable memory space available to and reported by
the operating system
Preface
R
6 White Paper
• These memory ranges, while unavailable to the OS, are still being utilized by subsystems
such as I/O, PCI Express and Integrated Graphics and are critical to the proper functioning of
the PC
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