Which of the following bus speeds is supported by PC2-5300 and PC2-4200?

The correct answer is B. 533Mhz. PC2 designations refer to DDR2 SDRAM modules. PC2-4200 is DDR2-533 memory, rated at 533 MHz effective bus speed with a peak bandwidth of ~4,200 MB/s (its native speed). PC2-5300 is DDR2-667, rated at 667 MHz with ~5,300 MB/s bandwidth. When both module types are installed…

Hardware

Question

Options

A333Mhz
B533Mhz
C666Mhz
D800Mhz

How the community answered

(35 responses)

A
6% (2)
B
91% (32)
D
3% (1)

Explanation

PC2 designations refer to DDR2 SDRAM modules. PC2-4200 is DDR2-533 memory, rated at 533 MHz effective bus speed with a peak bandwidth of ~4,200 MB/s (its native speed). PC2-5300 is DDR2-667, rated at 667 MHz with ~5,300 MB/s bandwidth. When both module types are installed together in a system, the memory controller will downclock to the lower common speed of 533 MHz to maintain compatibility. Therefore, 533 MHz is the bus speed that both modules support and can operate at. The other options (333, 666, 800 MHz) do not correspond to the shared compatible speed of these two module standards.

Topics

#DDR2 RAM#memory bus speed#PC2-5300#RAM specifications

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