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原帖由 Parco爸 於 25-9-2009 22:35 發表
將4條1G 裝落A腦
但不是顯示4G..而係3.25G 何解呢....
將兩條1G裝落B腦...就顯示2G
真係唔講唔知, 呢樹都有好多機佬....
如果平兄冇搵錯INTEL Motherboard manual 即係A腦(因為相相睇唔太清楚型號), 說明書第17頁, Note度寫左兩句:
System resources (such as PCI and PCI Express) require physical memory address locations that
reduce available memory addresses above 3 GB. This may result in less than 4 GB of memory
being available to the operating system and applications.
所以絕對同意狗哥既睇法, 除非升級64bit Windows, 否則系統只能顯示3.XXGB for physical 4GB RAM installed.
A腦問題:
- Kingston RAM model KVR533D2N4K2/1G - 該型號出廠應該係2條 500MB RAM x 2 = 1G, DDR2 533Mhz CL4 ( 奇怪只裝一條? )
- Samsung RAM model M378T3253FG0CCC - 256MB RAM, DDR2 400Mhz CL3
兩條RAM既Clock Speed唔同, 如果一齊安裝到同一部腦, Kingston已經行唔到533Mhz....
A腦升級方法:
1. 買多一條同型號 Kingston RAM KVR533D2N4K2/1G 500MB
, 再加一條最好相同牌子 DDR2 533Mhz CL4 1GB
Total: 500MB + 500MB + 1GB = 2GB
2. 放棄所有RAM, 好似平兄講重新買過 1GB x 2 or 1GB x 4, 當然視乎Budget.
另一點如買RAM 通常睇 [RAM Type] {Clock Speed} <Latency>
即係 [DDR2] {533Mhz} <CL4>,而Clock Speed一般係向下兼容, 如買左800Mhz而底板只支援533Mhz, 咁Bus Clock只可以行到533Mhz而非800.因為市場價格講供求, 有時愈新既RAM反而愈平, 好似家吓主流係DDR3 1066Mhz/1333Mhz, 可能會平過DDR2 667Mhz/800Mhz之相同GB 既RAM, 但RAM Type係唔向下兼容, 所以千奇米相腦場D Sales, 有時有部份人咩都夠胆死, 當然專業既會係大多數.
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