RAM DDR1, DDR2, DDR3 dan definisinya

Repost dari belajarinteraktif..... Gak papa ikut ngangetin.... biar tambah anget

Sobat, kadang kita bingung membedakan Ram DDR1, DDR2 dan DDR3. Gimana sih sistem perhitungan clocknya, kelas-kelasnya bagaimana….

Nah bagi sobat-sobat yang masih bingung dengan DDR dan clocknya, berikut ini saya tampilkan tabel clock dan transfer ratenya. Semoga bermanfaat, sobat

Ringkasannya:

DDR1:

DDR-200 = PC-1600

DDR-266 = PC-2100

DDR-333 = PC-2700

DDR-400 = PC-3200

DDR2:

DDR2-400 = PC2-3200

DDR2-533 = PC2-4200

DDR2-667 = PC2-5300

DDR2-800 = PC2-6400

DDR2-1066= PC2-8500

DDR3:

DDR3-800 = PC3-6400

DDR3-1066 = PC3-8500

DDR3-1333 = PC3-10600

DDR3-1600 = PC3-12800

DDR3-1866 = PC3-14900

DDR3-2133 = PC3-17000

tabel detailnya adalah sebagai berikut ini:

Keterangan:
Std Nm= Standard Name
Mem Clk= Memory clock(MHz)
Cy Tm= Cycle time^[4](ns)
Bus Clk= I/O bus clock(MHz)
Dt Rt= Data rate(MT/s)
Volt= V_DDQ(V)
Mod Nm= Module name
PTR= Peak transfer rate(MB/s)
Tim= Timings
CAS Lat= CAS latency(ns)

Fractional frequencies are normally rounded down, but rounding up to -667 is common due to superstition about the number 666.

……DDR3 SDRAM:….Double Data Rate SDRAM III (Quad Edge ‘Clock’ Rate, 1.5v signaling), Third Generation

………PC3-6400 (DDR3-800 SDRAM); Clock Speed: 100MHz, Data Rate: 800MHz, Through-put 6.40GB/s

………PC3-8500 (DDR3-1066 SDRAM); Clock Speed: 133MHz, Data Rate: 1066MHz, Through-put 8.53GB/s

………PC3-10600 (DDR3-1333 SDRAM); Clock Speed: 166MHz, Data Rate: 1333MHz, Through-put 10.67GB/s

………PC3-12800 (DDR3-1600 SDRAM); Clock Speed: 200MHz, Data Rate: 1600MHz, Through-put 12.80GB/s

source:

http://en.wikipedia.org/wiki/DDR1_SDRAM

http://en.wikipedia.org/wiki/DDR2_SDRAM

http://en.wikipedia.org/wiki/Ddr3

http://www.interfacebus.com/Memory_Module_DDR3_DIMM.html