PC Processors

[Ronin2]

Hello.

I just found that DDRAM frequency reported is much lower than its nominal speed. I suspect a bottleneck issue. If anyone could check attached data and resolve, please. Hardware information: Board= X470, CPU= 5 2600, RAM= 4x 8GB 3200MHz.

Waiting for reply

Regards

Rafal

[johnnyenglish]

Hi, first things first.

4 sticks will always overburden the integrated memory controller and 3200 is not actually the oficial supported speed.

Do you by any chance bought them as a pack or in separate?

Have you tried enabling XMP in the first place, if it crashes, try just two sticks.

Good luck 

[FunkZ]

You've got some very nice sticks of 4x8GB Samsung B-die there, rated for DDR4-3200 @ 14-14-14 which is about the best memory you can have for a Ryzen 2000 series, but it appears you don't have XMP enabled.

[Ronin2]

XMP is disabled.  I thought it should run on max speed by default. Anyway i've just checked prices for R5 5600 and those are cheap now. Would those 4 sticks be optimal with 5000 series CPU?

Regards

[FunkZ]

No, you have to enable XMP to get the rated speeds.

DDR4-3200 14-14-14 is awesome speed/timings for ANY AM4 platform.

Run it through a memory latency calculator - this equates to 8.75ns

DDR4-3600 16-16-16 is another common Samsung B-die but that's actually slightly worse - 8.88ns

It is definitely NOT worth the expense of replacing your memory if you upgrade the CPU to a 5600. Yes the CPU can support DDR4-3600 or higher, but low latency memory in that range is expensive.

The ONLY reason to use faster memory on AM4 is if you upgrade to a CPU with IGP and use the integrated graphics.

[Ronin2]

Just enabled XMP and it defaults to values as on attachment. Now are those speeds nominal values, or multiplied by 2?

[FunkZ]

The XMP Profile1 looks to be correct (DDR4-3200 14-14-14)

It's commonly referenced as "3200MHz" when it's actually 3200MT/s (mega-transfers per second) - the real memory frequency for DDR4-3200 is 1600MHz.

[johnnyenglish]

Couldnt see the pictures on the phone but thats a really nice memory there.

I bet they can be pushed nicely to 3600 on a ZEN 3.

[Ronin2]

There are good priced used 5000 series now so i will grab one. Then i will have still some room for faster GPU if needed.

Thanks for support