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Altera_Forum
Honored Contributor
Honored ContributorMemory Interface Cyclone 3
I am wondering what the fastest memory interface would be for the cyclone three. Q1. What is the fastest RAM chip supported by altera IP or that works with cyclone 3? Q2. What is the fastest ...
Altera_ForumHonored Contributor
Honored ContributorI think the closest you will find is something called ZBT SRAM, or Zero-Bus-Turnaround Synchronous SRAM. It's likely this has the lowest latency of all memories.
If you are looking at something that is more DDR-like have a look at RLDRAM (Reduced Latency DRAM). I think Micron is about the only company still making the stuff. Generally speaking, all DRAM are optimized for burst-type operation and generally really struggle with random accesses or r-w / w-r operations. The controller is also a big factor in this. SSRAM is better in this regard but sustained throughput and clock frequencies are commonly far less than their dynamic cousins. Stephen
