More commonly you are going to see 8-2-2 or 7.5-2-2. These numbers refer to first number - the nanosecond rating of the memory, second number - the CAS Latency, third number - the RAS latency. The nanoseconds are important in terms of memory access speed and latency is like friction, the less the better.
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you can find it on the chip itself there should be a hyphen - then right in front of it there will be a number. Like this -2 that is normally the cas rating of the ram.
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No software is going to be able to tell you what your memory speed is at. It would be like software that could tell you how much you could overclock a processor. That speed written on the chip is the maximum rated speed by which the manufacturer will certify it at for it's lifetime. It has more to do with the purity of the silicon than anything. The manufacturer has to ask himself, how fast can I run this memory and still have reliable performance. Then bam, he slaps that sticker on it once that has been determined, usually with internal testing. It's the same process by which intel or amd use to certify processors at certain rated clock speed.
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