64gb DDR4: 2400 cl14 vs 3000 cl15 vs 3200 cl16

[sub-80]

Good Day;

Which is better? I know lower cas latency is better but also higher speed are beneficial. So which is best? My old pc is 32gb 1333 cl9.

New build:
i7 6700k
gigabyte z170 g1
2x780 1ghz

 

[Deders]

The Corsair are 16-18-18 so closer to cas16.5 or 17 than 16.

My opinion is 3000MHz is fast enough to compliment the 6700k without risking bottlenecking in even the most bandwidth hungry apps and games. the extra 200MHz won't make that much difference especially at the cost of latency.

 

[sub-80]

One of my friends recommended other: GSkill Tridentz series 2800 14-14-14-35 cl:14

Seeing that you are running 16gb ddr4 3200 do you notice any bottle necking?

 

[eton975]

Latency in seconds = (1/(clockspeed))*(CAS latency)

(1/2400000000)*14 = 5.83 nanoseconds latency. (2400Mhz DDR4 with 14 CAS)
(1/3000000000)*15 = 5 nanoseconds latency. (3000Mhz DDR4 with 15 CAS)
(1/3200000000)*16 = 5 nanoseconds latency. (3200Mhz, 16 CAS)

If all are the same price, go for either the 3000 or 3200Mhz option. The 14CAS RAM does have a low cycle latency, but the actual latency is higher due to each cycle taking longer.

 

[sub-80]

Thanks man that clears up a lot.