Which RAM kit is technically faster?

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Q

Quaternion

Honorable
Oct 12, 2014
44
1
10,565
Would a 3400MHz C16 module be faster or slower (or the same) as something like a 2400MHz C9 DDR4 module?


To keep it a bit more abstract:

Is there any definitive way to calculate the speed at which a module can effectively operate, given it's speed, CAS latency, and timings?
 
Solution
Tradesman1
To compare DRAM in a general sense take what you are looking at say this 3400/16, it is slightly better than going down 1 step (a step being 1 for CL and 266 in data rate) each so it's slightly better than 3133//15 - with all the DDR4 oddball speeds it can be hard to judge. Slightly more forward with DDR3 as an example you'd see 1866/8 then up to 2133/9, 2400/10, 2666/11 - but each step is a small increase, going say 2400/10 to 2666/12 would be more equal or 2666/13 would be a decrease....though if you found 2666 at 10, the same CL as the base 2400/10 then it would be a bigger increase. We aren't talking earth shattering differences, the changes are slight

Generally speaking the wider bandwidth (datarate) of the DRAM, will often...
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Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
67,883
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126,960
To compare DRAM in a general sense take what you are looking at say this 3400/16, it is slightly better than going down 1 step (a step being 1 for CL and 266 in data rate) each so it's slightly better than 3133//15 - with all the DDR4 oddball speeds it can be hard to judge. Slightly more forward with DDR3 as an example you'd see 1866/8 then up to 2133/9, 2400/10, 2666/11 - but each step is a small increase, going say 2400/10 to 2666/12 would be more equal or 2666/13 would be a decrease....though if you found 2666 at 10, the same CL as the base 2400/10 then it would be a bigger increase. We aren't talking earth shattering differences, the changes are slight

Generally speaking the wider bandwidth (datarate) of the DRAM, will often overcome much lower data rates at faster CLs
 
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