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Some questions about ram

R

Rickten

Golden Member
I was wondering, I think this has been answered before but I couldn't find it, what do the numbers next to the ram stand for. Example 2-2-2. What would each of those numbers stand for. Or I've seen 3-2-2 I think. THese numbers have no meaning to me and I'm looking to clear that up.

Also, curcial has ECC ram and Registered ECC or one with neither. If I just get the cheapest ram will I be able to run it at max settings like, enhanced chip technology and 4-way interleave at cas2 or do I need to get registered to ensure that it will run with these settings. I thought I had read that not all chipsets support registered ram and that unless your motherboard supported it that you won't be able to run registered ram. So basically I'm asking if I get the cheapest DDR dimms at crucial will I be able to run it at max settings.
 
Stolen from Sharkeys:
"Though the internal operations of the DRAM are measured in nanoseconds, the system itself is operating to the beat of the system clock. For this reason, most memory timings, as related to the system, are given in clock cycles. For example, SDRAM is typically marketed using the clock cycles for CAS Latency, tRCD and tRP (i.e., 3-2-2). It is also common to show read cycle times such as 5-2-2-2 (for EDO) or 5-1-1-1 (for SDRAM). These numbers are essentially the number of clock cycles necessary to get the first bits of data (initial latency) and subsequent bits of data."

 
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