Differences in RAM modules

[sheriff12]

OK, I'm about ready to buy some new DDR4 RAM. I looked on amazon and found that there are different ratings. What is the difference between a module that says 2666MHz C16 and a module that says 2133MHz C13? And what do these numbers actually mean? I appreciate all info offered. By the way, both are Corsair Vengeance LPX modules just different prices.

 

[BSOD BSTD]

2666Mhz is the frequency of the RAM (higher is faster, so better) The C (or CL) number is the latency, the delay the RAM takes to operate. A lower C number is faster, but higher frequency RAM will have a higher latency.

In short, the 2666Mhz RAM is faster.

Before you buy anything, please post your motherboard model and CPU, so that I can check what RAM you can run.

 

[sheriff12]

I am going to purchase a Gigabyte X99 LGA 2011-3 GA-X99M- Gaming 5 mo/bo and an Intel Core i7-5820 Haswell-E 6 core 140w processor. I greatly appreciate the extra assistance you offer in informing me about which RAM is compatable Thanks!

 

[BSOD BSTD]

heres the vendors list of approved RAM for your motherboard:

http://download.gigabyte.eu/FileList/Memory/mb_memory_ga-x99m-gaming5.pdf

they are grouped by frequency, if you select RAM from this list it will be fine.

And one more point, its better to use 2 sticks rather than 1 single stick, the RAM works more efficiently so get 2 x 8gb instead of 1 x16gb etc.

 

[sheriff12]

You just saved me from making a costly mistake. The RAM I was going to purchase is not on the list. Thank You very much!