Higher frequency or lower latency ... remember which is better?
Subject: Memory | February 3, 2011 - 09:04 AM | Jeremy Hellstrom
OCIA recently revisited the old conundrum, is it better to buy or overclock the frequency of your DIMMs as high as possible, or to stick with the lowest latency possible? It all comes down to the memory bandwidth, as these values are the variable which affect how many bits can flow through your RAM in a certain period of time. To make it easier on those just starting to delve into this topic, OCIA's table of JEDEC
specifications will help you on your way to picking the best RAM.
"As memory standards have changed over the years one thing has remained constant: the confusion that
arises when trying to compare different memory speeds and timings. It's been drilled into our heads
again and again that faster speed is good, but so are lower timings, and unfortunately those two ends
seem to move in opposite directions. The higher the memory goes in frequency, the greater number of
cycles spent waiting before reading from or writing to it. Invariably the question always arises, which
is better for my system?"
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