[请解惑]关于ramdisk、commando、显卡的有趣现象

snew

server 2003就可以解决了

ntos

上 Server 2008 就没4G问题了

2000wcw

换64BIT么好了，用什么RAMDRIVER，脱了裤子放屁啊

licn188

原帖由 privater 于 2008-7-26 10:42 发表
The Windows OS (Vista and XP) can only address 2^32 bits(4,294,967,295) of memory-mapped I/O (MMIO, henceforth). Everything inyour computer has an MMIO address; the BIOS, the buses, Video Card RAM(Whi ...

这个是正解。

qinwei111

呵呵。。。学习了

mapleo

我的以前用VISTA显示能用的是3.25G，现在用VISTA SP1显示有3.58G可用，
为什么你只有2.93G

[ 本帖最后由 mapleo 于 2008-7-26 16:33 编辑 ]

privater

The Windows OS (Vista and XP) can only address 2^32 bits(4,294,967,295) of memory-mapped I/O (MMIO, henceforth). Everything inyour computer has an MMIO address; the BIOS, the buses, Video Card RAM(Which supersedes your DRAM addressing). The computer reserves blocksof MMIO addresses for Video RAM, then buses, bridges, BIOS, then DRAM.Your RAM gets all the addressing space left, which is usually 2.5 -3.25GB.

This means that you will not have 4GB available in Windows, it willshow 2.5 to 3.25GB. The actual number will depend on yourmotherboard/chipset and what other devices that require an MMIOaddress, are installed in your machine. Remember that onboard sound,USB, SATA, all require MMIO addresses, not just PCI or PCI-e cards.Basically the more things you use, the less total ram you will haveavailable.

64-bit versions of XP and Vista will see and use all 4GB since they have more physical addresses available (2^64)

32bit系统下剩余的内存受显卡显存大小影响

znyh001

为什么我的主板可以认到3.5G

winfast007

{lol:] 我的情况和楼主一模一样。。。怎么换都识别不出3.25G出来

还有个更搞的地方，用公版的8600GT或者8600GTS，进BIOS的hardware monitor会死鸡{wink:] ，PCP会疯狂报错

第一代ROG，BUG难免不会少的了

lang_269

是不是有一个显卡调用了内存

醉酒棕熊

啊，我的P5B-D wifi也是一个问题，换啥都没用