3600mhz CL18 vs 3600Mhz CL14 - how much difference really on Ryzen?

B1gdeano · 4 Oct 2020 at 17:39

Ok

Im considering upgrading my rather mediocre 3600Mhz RAM with CAS of 18 to the 8Pack 3600Mhz CAS 14 but was curious how much different it is in the real world?

Does it make much difference to Ryzen systems? Im using a 3900X

Would appreciate some advice from those that know more about RAM than I do

B1gdeano · 4 Oct 2020 at 18:25

Yeah I have tried to tighten the timings up - it fails and refuses to boot - they are crap sticks

What about stepping up to the 4000mhz CAS 18 sticks? Though they wouldnt run at 1:1

I plan to swap the CPU for the new 5900X or whatever they call it, but can see it being slightly more than the cost of RAM :-)

B1gdeano · 6 Oct 2020 at 19:36

Yeah Im going to leave it I think - only two days until the AMD reveal for Zen3 and I am hoping to see improvement in the Infinity Fabric to allow 1:1 at higher speeds

I plan to replace the 3900X to get the improved IPC and if they do indeed improve the IF then I will just get new RAM with that

B1gdeano · 9 Oct 2020 at 12:38

Teq said:
Sorry to hijack someone else's thread, but I have a similar question. I'm running 32Gb 3466@CL16, is there any point in me trying to attain something faster at this point? (waiting for the 5900x). I've found spotting 3600@CL16 sticks or better in 32 gig pairs almost impossible in the UK

Depends I think - I was the same going to wait until after the 5900X release to see if faster fabric clocks are a thing, but listening to the gamers nexus clip it seems AMD have said to expect very similar support to the Zen2 series - the IO die is the same also

So I think what speed we have now is what speed Zen3 is going to be at - so about 1900mhz tops - Maybe Zen4 will rework fabric clock but this time it looks like all works gone into the CCDs

Think I am just gonna pull the trigger on the low CAS 14 3600mhz kit I want....