tambh RAM berlainan MHZ

nk tny sikit..
boleh x kalau kite tambah ram kat lptop y asl 2gb tmbh lagi 2gb
tpi berlainn MHZ.
y asl guna 2gb 333MHZ tpi RAM bru bli nih yang 2gb 667MHZ
boleh x digunakn dalam 1 Lptop...?

rasanya boleh.. tapi dia akan detect yang speed slow sebagai speed utama..

Tak boleh.sebab:
ram asal - 333MHz - DDR
ram tambahan - 667Mhz - DDR2

kalau nak jelas lagi,
DDR2, from Wikipedia:
DDR2 SDRAM is a double data rate synchronous dynamic random access memory interface. It supersedes the original DDR SDRAM specification and the two are not compatible. In addition to double pumping the data bus as in DDR SDRAM, (transferring data on the rising and falling edges of the bus clock signal), DDR2 employs an I/O buffer between the memory and the data bus so that the data bus can be run at twice the speed of the memory clock. The two factors combine to achieve a total of 4 data transfers per memory clock cycle.

DDR2 DIMMs are not designed to be backward compatible with DDR DIMMs. The notch on DDR2 DIMMs is in a different position from DDR DIMMs, and the pin density is higher than DDR DIMMs in desktops. DDR2 is a 240-pin module, DDR is a 184-pin module. Notebooks have 200-pin modules for DDR and DDR2, however the notch on DDR modules is in a slightly different position than that on DDR2 modules.


so kesimpulannya:
jangankan kata nak berfungsi, nak masuk kat slot pun tak boleh.

dua2 DDR2...
tpi sy pasang,sy check kt comptr properties kluar 2.75gb shaja.
pdahal saya tmbh ram dua2 2gb..
knp leh jdi cmtue?
y satu lagi psal hal tadi,dgn berlainn MHZ x merosakkn pe2 ke dlm lptop?

pelik, camana 333mhz ialah ddr2? atau 333 tu dimaksudkan sebagai bus clock?(ddr-667 akan clock pada 333)
jangan keliru bus clock ngan bandwith.lol..


pasal 2.7Gb tu, normal untuk OS biasa(x32).
kalau nak windows detek 4GB ram, guna XP x64 atau Vista.

better awk buang ddr 333mhz tu just guna ddr2 667mhz..

operating system yang ko guna? klu vista 32bit kena update service pack 1 baru detect 4GB... tapi klu xsilap aku 333MHz cuma DDR bukan DDR2.. ntah xtau arr klu TS mmg dah check n confirm DDR2.. check sama laptop ko bleh support maximum berapa

kalau ko sekadar tambah untuk banyakkan memory tanpa perlu nak tau latency, beza frequency, fsb and so on, tambah saja, janji dia modul yg sama iaitu DDR2.

komputer nko akan amek speed yg paling rendah.

tambahan : tak semua Motherboard Laptop Support 4 GB, tak kiralah pakai x64 ka, x32 ka, kalau dia tak support maka sampai situ ja la. kalau nak pakai ram tinggi2 tukar pakai desktop.

berkenaan soalan asal, kalau ram ddr2 bus speed berbeza, latency berbeza, boleh digunakan, tapi kurang efficient, sebab dia akan follow ram yang speed rendah dan latency longgar. better pakai satu dari dua kalau dah berbeza. beratkan sistem nak balancekan.