16-16-16-36 vs 15-15-15-35?

[jimlau]

is 16-16-16-36 noticeably slower than 15-15-15-35 for DDR4 RAM?

thanks.

 

[atomicWAR]

Not in real use no but in benchmarks you will a slight increase in bandwidth and response times with the lower latency settings.

 

[Marco DiPolo]

So with a $15 difference worth getting the faster one?

 

[Karadjgne]

Yes and no. If both a respectable ram, and benchmark performance is a valid reason and that $15 is not worth mentioning, then sure, go for it.
Real life application will basically show no difference. 1-2fps, 45 seconds saved on a 1hr render etc, no, it's not worth it.

 

[jimlau]

is it as simple to say CL15 is (1/16th) faster than CL16?

 

[Mint__]

I doubt human perception can tell the differences between those latency figures. I would use whatever is within the proper range at the most affordable cost.

 

[jimlau]

I actually found some DDR4 3200 with timings of 14-14-14-34. That's about as good as it gets?

 

[Karadjgne]

With the memory controller now moved to the cpu itself in recent generations of Intel cpus, timings are really only important in relation to adding more ram. It's the speed of the memory that shows any real gains.
2400 is pretty much stable for any cpu. The higher you go in speeds, the higher the voltage, the higher the temps and the more likelihood that you'll need to make other voltage adjustments and/or OC too get the performance and stability. Many times, the high speed ram simply isn't worth the aggravation unless you have the surrounding system to support it.
Bumping up 1-2fps or shaving 30 seconds on a long render isn't of much real value and not something shown in anything other than benchmarks. Most lower grade boards only officially support 2133MHz anyways.

 

[Marco DiPolo]

I read on this forum that the number you should be most concern for is the first one. so in this case, the 15-15-15-35 is the one you want. If the specs are 15-15-15-35 vs 15-16-16-35, then go with the cheapest one since the first number is the same and these specs are so similar you wont notice the difference. I think this was just a rule of thumb type of advise.