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

B1gdeano

B1gdeano

B1gdeano

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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
 
Honestly, I wouldn't worry too much about it.

Have you tried tightening the timings on your current set?
 
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Couple percent? To be honest, spending the same money on the GPU or CPU will almost certainly give better performance returns.
 
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 said:
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 :)
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Yeah, don't do that.

I have 4000 cl18 sticks and I'm in the same boat, if I change settings manually it won't boot. I run the memory at 4000/1000 rather than 3600/1800 though, partly because there isn't much difference outside of a few synthetic benchmarks and instability starts to creep in.

Boards are not guarantied to be stable at 1800 or above, mine needs tweaking, considering every failed attempt results on cmos resets for me I just can't be bothered messing around with it.

In hindsight, I wish I went Intel.
 
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
 
Maybe in tasks not related to gaming more than anything else.
I replaced my old 3000mhz ram that couldn't run spec 2933mhz and the new crucial b 3600mhz cl16 run flawlessly and cut my video encoding with half.
there was a difference with the game but hardly justified but that video encoding really was surprising.
set for zen3 tomorrow anyhow my 4 generation ryzen
 
B1gdeano said:
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
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Yes, just wait and see what AMD release, hopefully the newer CPU's will allow higher infinity clocks.

I'll probably hold off until early next year and then do a CPU/GPU and ram upgrade, we'll see.

I'm in no rush and it's nice to at least to have upgrade options.
 
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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
 
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
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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....
 
Do you have a link for that kit? (never mind, I see it was the 16Gb 8Pack kit). Was rather hoping they'd release a CL14 32Gig variant but the best I can muster is CL16.
 
Teq said:
Do you have a link for that kit? (never mind, I see it was the 16Gb 8Pack kit). Was rather hoping they'd release a CL14 32Gig variant but the best I can muster is CL16.
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You could just get CL16 kit, bump the voltage and go for 14 don't think there are any 32gb cl14 kits at 3600 but I maybe wrong.

BigBANGtheory said:
Same memory controller on 5000 as 3000 according to Gamers Nexus
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It's a bit of a shame and make me wonder why they were touting ram speed of up 5000mhz on some of the B550s if ram will still be optimal at the same speeds as zen 2.

Maybe they intended to move the memory controller to 7nm but in the end didn't have the manufacturing capacity.
 
Joxeon said:
don't think there are any 32gb cl14 kits at 3600 but I maybe wrong
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You are correct even though they apparently do exist: TF10D432G3600HC14CDC01

The Gigabyte Z490 QVL lists them so somewhere they did get produced.

One thing I found weird is why the 8 Pack 32GB 3600 kit is 16-16-16-38 and not 16-16-16-36. The G. Skill kits still manage to eek out 36 on the fourth digit. The 3200 kit matches the 16GB timings of 14-14-14-31 so not sure if they are selling an inferior 3600 bin.
 
im in the same boat not sure if i should upgrade my RAM for a 5800x its currently @3000mhz CL14 due to the terrible IMC on first gen ryzen id imagine i could get it to run @3400mhz CL14 what do u guys think i should do?
 
lloydcars18 said:
im in the same boat not sure if i should upgrade my RAM for a 5800x its currently @3000mhz CL14 due to the terrible IMC on first gen ryzen id imagine i could get it to run @3400mhz CL14 what do u guys think i should do?
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Go for it, no need to get new RAM imo. I've had 16Gb 3800 CL14 stuff on my 3900X and replaced with 3200 Cl16 64Gb and don't see one iota of a difference except i have magnitudes more RAM :D It's like the same car with 150bhp vs 136bhp..do you really see that 14bhp difference in real life?
 
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B1gdeano said:
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....
Click to expand...

If Zen 3 is 1900mhz tops, then why do we even need 3600mhz ram? Sorry for my ignorance. I’ve been using ddr3 ram for many years
 
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