Beza antara Win XP 32 bit dgn Win XP 64 bit

Ok, Windows XP 32bit sama ada sp2 atau sp3 hanya boleh support 4GB Ram sj, Manakala Windows XP sp2(terkini) 64bit boleh support lebih 4GB, paling baik 8GB hingga 128GB RAM berpandukan kepada Chipset Mboard. Jadi kalau mana-mana laptop atau PC yang dah masuk 4GB kenalah install windows XP 64bit. Kalau tidak system akan detect 2.9GB hingga 3.5GB sj. Tidak penuh. Maksudnya RAM 1GB hilang gitu sj yang tidak digunakan. Ini disebabkan windows xp 32bit tidak support ram lebih 4GB. Windows xp sendiri hanya dapat detect kurang 4 GB RAM, setelah tolak share video card dan lain-lain, ia hanya tinggal 2.9GB-3.5GB.

So. Rugilah letak 4GB RAM tapi hanya dapat 3GB sj.

Begitu juga Windows Vista 32bit. Kalau install windows vista 32bit sp1, system dapat show 4GB RAM tapi penggunaan hanya 3.5GB sj. Tapi kalau windows vista 64bit RAM dapat penuh.

Lihat berita selanjutnya:

1. What O/S Edition have you installed?

a. 32-bit Windows is limited to a maximum of 4GB and cannot see any pages above 4GB.

b. 64-bit Windows can use between 8GB and 128GB depending on SKU.

2. What address range can your processor actually access?

a. Typically that’ll be 40-bit addressing today for x64 (Intel EM64T/AMD64) , but older processors may be limited to 36-bit or even 32-bit

3. Can your system’s chipset map memory above 4GB?

a. Mobile chipsets on sale today cannot (but that may change with time)

b. Newer workstations (which use chipsets developed for single or multi-proc servers) usually can.

Windows can remap memory from below 4GB to above 4GB and use it there, however, that relies on the three points above:

1. Can Windows access memory above 4GB?

a. 32-bit – NO

b. 64-bit – Maybe (due to chipset limitations)

2. Can your processor access memory above 4GB?

a. If it’s recent then it might, and if it’s either AMD64 or EM64T it’s almost certain

3. Does your chipset allow pages to be remapped above 4GB?

a. Probably not – and that’s what’s catching people who install 64-bit Vista to work around point 1 – they find they still cannot see above 4GB