RDRAM vs. SDRAM?
Answer:
The short answer is no. There are major differences between the two types of RAM. RDRAM is a memory architecture that relies on a packet-based protocol near an access latency that largely depends its distance from the memory controller. Although systems with multiple RDRAMs own slightly increased latencies compared to single-RDRAM systems, RDRAM latency is still, in a comportment of speaking, comparable to that of SDRAM systems. By comparison, RDRAM protocols and architecture facilitate memory concurrency and minimize latency, as opposed to SDRAM, which does not. The 1.6 GB/sec bandwidth of RDRAM is achieve with single a 16-bit data bus, and when combined beside control signals the memory controller only wishes about one third of I/O channel that SDRAM does. SDRAM uses a different approach. It uses a parallel databus 64 bits wide, and adding together modules to the system has no effect on memory latency. In attachment to the 64-bit databus, the memory controller must drive a multiplexed row and column address to the SDRAMs along with control signals.
To accurately gauge (within reason) SDRAM performance, two metrics must be considered, bandwidth and latency. Unlike SDRAM, RDRAM offer not only complex bandwidth, but its latency is much improved when compared to what we've come to expect from SDRAM. You might be surprised to entry that PC133 SDRAM latency is actually worse than PC100.
No.
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