DDR4 speeds

[LED_Guy]

How much of a difference does memory speed make?

 

I am building a computer for numerical simulations and optical design/ray trace.  These are very memory intensive and I create data sets well into the multi GB range.

 

The build will include 5960X (overclocked and water cooled), ASUS X99-Deluxe, 64GB DDR4 (speed tbd) and GTX 980 for GPU.

 

2133 MHz = $14.47/GB

2400 MHz = $14.78/GB

2666 MHz = $15.09/GB

2800 MHz = $17.28/GB

3000 MHz = $28.22/GB

 

There is no real cost difference up to 2666 MHz, but the price starts to climb fast at higher speeds.  It's  an extra $140 to bump up to 2800 MHz, but another $700 for 3000 MHz.

 

This is a high end build with a total budget of $7,500.  I can afford the faster DDR4, but I want to see an noticeable difference if I'm paying that much more.

[thekeemo]

this help?

 

[Glenwing]

2666 seems to be the sweet spot. I'd stick eith that for now, that's pretty fast so I doubt higher will have too big of an impact. This is only the beginning for DDR4 anyway, 3200 will probably be standard for cheaper in a year or two.