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merhaba arkadaşlar vista busines versiyonu var clientte 4 gb ram var sp2 ve tum guncelemeler mevcut 4 gb rami görüyor ama görev yöneticisinde baktıgımda fiziksel bellek toplam 3069 mb görünüyor yani 1 gb havada kalıyor bu hem 32 bit de hemde 64 bitte aynısı bunun br ayrımı var acvaba yoksa 4 gb ve uzerini görmüyormu sitesinbde 128 gb ye kadar testekler diyor ama sizce
Bilgisayarınızın modeli 3 gb ta kadar olanı destekliyor. kendi sitelerindeki bilgiler bana kalırsa yanlış.
hocam topladığım pc İ7 işlemci ve son model anakart anakart 12 gb destekliyor.ben bunu her makinada ve her lapopda gördüm başka birşey var ama ne
hiren bootcd içinde ram test aracı var veya kendi bulduğun bi ram test yazılımı ile bios içerisinden ram leri bir test et. Birde anakart üzerindeki bios ram özelliklerini bir kontrol edermisin.
Merhabalar,
http://blogs.msdn.com/dcook/archive/2007/03/25/who-ate-my-memory.aspx
Who ate my memory?
The consumer versions of 32-bit Windows XP and Vista have a stated limit of 4 GB RAM, but a practical limit of about 3.1 GB. A lot of partial explanations have been floating around, so I thought I would try my hand at clearing up the issue. (Wish me luck!)
The design of the Intel 386 architecture supported access to up to 4
GB of physical memory (32-bit physical addresses) and unlimited virtual
memory (4 GB at a time via 32-bit virtual addresses). 4 GB of physical
memory seemed quite unthinkable at the time the chip was released, so
the actual CPU did not have enough address pins to actually do this.
Back then a 32-bit address space seemed extravagant for anything less
than a supercomputer or mainframe. Nowadays, you can get 4 GB for under
$400, and what was unthinkable in 1986 is within reach of anybody
thinking about a new computer.
So at least I can access 4 GB, right? Nope.
The original IBM PC’s processor could access 1024 KB of physical
address space, but you could only use 640 KB for RAM. The remaining 384
KB of address space was reserved for memory-mapped hardware and ROM. A
similar situation exists with current systems: hardware reserves large
chunks of the upper 1 GB of physical address space. Because of these
reserved areas, a system with a 32-bit physical address space will be
limited to somewhere around 3.1-3.5 GB of RAM.
To overcome the 32-bit limitation, recent x86 CPUs (Pentium Pro and
later) have 36 address pins and can address 64 GB of RAM. The original
design of the x86 32-bit protected mode only provided access to 32-bit
addresses, so PAE (Physical Address Extensions) mode was created to
allow access to 36-bit addresses.