RAM with what bus speed?

[vahids]

Hello,
I'm building a new PC

There are a lot of DDR4 RAM bus speed from 2400 to 3200
and I'm limited to Geil & G.Skill RAMs.
Cursiar not found in my country.

I don't know which one should I choose.

My build list:
Main board: GA-Z170X-UD3
CPU: i5 6600K

And maybe try over clock next year!

 

[Adrian B]

See the Memory support list for the GA-Z170X-UD3 board
http://www.gigabyte.com/products/product-page.aspx?pid=5499#

Both Geil and G.Skill produce high quality RAM - as do all the other big brands.

 

[Fl0r!an]

RAM speed is usually not the bottleneck of overall system performance, so in most common cases "slow" 2400 MHz RAM is sufficient. Faster RAM will give you impressive benchmark numbers but little real world advantage, unless you're using some special applications which highly rely on RAM bandwidth.

 

[kiiroaka]

Simple, really: If you can get 64GB of DDR4 2400 for the same price of 32GB of DDR4 3200 - get the 2400 speed. (Typically there's about a $100 - $150 difference). If you are planning to upgrade in the future to an i7 6700K - get the DDR4 3200, preferably a single kit of 4x16GB. If you get 16GB of DDR4 2400 now and you decide to get another 16GB later, if you experience kernel panics then you may need to run it at 2133 speed. If you had to throttle down DDR4 3200 you probably wouldn't be too happy if you had to run it at 2800 or 2666 speeds since you paid about $350 for 64GB. Yes, you could just chuck the 16GB later on since prices drop dramatically a year later, but at the present time RAM prices seem to be creeping up higher than they were 9 months ago. But, then again, everything goes up n price right before the Holidays... just so they can throw sales and get the same price.