How do RAM?

[OnionRings]

Im a bit confused with ram atm. I keep hearing that ryzen loves fast ram, so I ordered a 3600 kit, but I keep seeing people not being able to get their ram to that speed, and some people have to settle for less. Why? Is it the rams fault? If yes then why advertise what it can't do? Is it the cpus fault? Motherboard? What chooses how far ram can go?

 

Also 

 what is linus talking about " infinity fabrics " and stuff in this video. I thought I was understanding ram fully, then he hit me with this and I'm like REE whats that?

 

Lastly, how do I overclock my ram? I know you go in the bios and turn up the clock speed (duh), do I need that XMP thing for amd cpus? And how do I " stress test " ram to see what the max speed it can handle?

 

Thanks!

[minibois]

10 minutes ago, OnionRings said:

Im a bit confused with ram atm. I keep hearing that ryzen loves fast ram, so I ordered a 3600 kit, but I keep seeing people not being able to get their ram to that speed, and some people have to settle for less. Why? Is it the rams fault? If yes then why advertise what it can't do? Is it the cpus fault? Motherboard? What chooses how far ram can go?

Some motherboards can't reach the speeds, but in this day and age any decent RAM+mobo combo will work.

11 minutes ago, OnionRings said:

 what is linus talking about " infinity fabrics " and stuff in this video. I thought I was understanding ram fully, then he hit me with this and I'm like REE whats that?

Infinity Fabric is the protocol or portion that the Ryzen CPU's use to community between CCX's. The different CCX's are the different pieces of the CPU which there may be some cores in one CCX and more in another.

I believe Ryzen 3000 changed how this worked a bit.

12 minutes ago, OnionRings said:

tly, how do I overclock my ram? I know you go in the bios and turn up the clock speed (duh), do I need that XMP thing for amd cpus?

On most AMD motherboards it's called XMP, XAMP or AXMP.

ASUS AMD boards call it DOCP.

13 minutes ago, OnionRings said:

And how do I " stress test " ram to see what the max speed it can handle?

Your PC either turns on or not.

Other than using your PC, I have not found a reliable RAM speed 'stresstest'.

[OnionRings]

1 minute ago, minibois said:

Some motherboards can't reach the speeds, but in this day and age any decent RAM+mobo combo will work.

Infinity Fabric is the protocol or portion that the Ryzen CPU's use to community between CCX's. The different CCX's are the different pieces of the CPU which there may be some cores in one CCX and more in another.

I believe Ryzen 3000 changed how this worked a bit.

On most AMD motherboards it's called XMP, XAMP or AXMP.

ASUS AMD boards call it DOCP.

Your PC either turns on or not.

Other than using your PC, I have not found a reliable RAM speed 'stresstest'.

Thanks!