Memory Frequency Help

[HiggsPrime]

I already have an AMD and an Intel system. Those two are my latest and first build. Now I am trying to test different possibilities for example, I ordered MSI GTX 780ti so that I can put GTX 760 and GTX 780ti on MSI Z87M and dedicate PhysX to 760. And many more funky stuff that ill do with he systems.

Here are list of questions on memory:

1. According to Mobo specs, it mentions 1866, 2100, etc as " (OC) ", what does that mean?
2. According to 4670K specs it supports upto 1600MHz, I have OCed to 4GHz using OC genie. Is there going to be a difference if I install 2100MHz?
3. Some ppl mention something like 9-9-0 CA, what is that?

Thanks.

 

[DigDeep]

1: That means that you need to manually overclock ram in BIOS to that frequency, if you want to run at those speeds.
2. No there will be no difference if you install 2100mhz RAM, it will still run at 1600mhz, unless you manually set it to 2100mhz in BIOS.
3. Those are RAM timings-Cas Latency. You have cl7 cl8 cl9 .... cl8 runs at 8-8-8-24, these are more important then memory frequency, the lower the number ,faster the RAM. There is no big differnece between 1600mhz and 2100mhz. Well there is a small difference, but it depends on the programs you use.

https://www.youtube.com/watch?v=dWgzA2C61z4