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So I got my 12900k ddr4, I got a question about ram

ameek

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Asus z690 rog strix gaming-A DDR4 mobo

I read the article on this site about ddr4 3600 cas16 being the best/safest option (sometimes matching/beating ddr5 6000) for Alderlake DDR4 platforms.

Now I have an option to purchase ddr4 3600 cas14, would this be worth it over ddr4 3600 cas16? The price is almost double in some cases. I don't see any benchmarks about DDR4 3600 cas14 on this site (or anywhere else for that matter). I am currently using a placeholder ddr4 3000 cas15 ram atm and when it runs non xmp 2133; I really notice battlefield 2042 frame rates dropping to 65 and the mouse feeling choppy. I know for a fact that when I go from ddr4 3000 cas15 to a new ddr4 3600 cas16 (or cas 14?); that my minimum fps in battlefield 2042 will increase by almost 6-8fps, if not more.
 
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Would the price be worth it over CAS 16? Maybe? hard to tell without knowing additional info, if the CAS 14 are high binned B die and cas 16 are not B die then maybe...

If you have the money get them both... then send back the one you feel is not worth it.

I would probably get 4 ranks of the cas 16 pump volts into them and OC the crap out of 4 single rank dimms since that seems to give me the best performance.

Are More RAM Modules Better for Gaming? 4 x 4GB vs. 2 x 8GB | TechSpot
 

ameek

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Would the price be worth it over CAS 16? Maybe? hard to tell without knowing additional info, if the CAS 14 are high binned B die and cas 16 are not B die then maybe...

If you have the money get them both... then send back the one you feel is not worth it.

I would probably get 4 ranks of the cas 16 pump volts into them and OC the crap out of 4 single rank dimms since that seems to give me the best performance.

Are More RAM Modules Better for Gaming? 4 x 4GB vs. 2 x 8GB | TechSpot

I was gonna go 2x8 DDR4 3600 cas 16 or cas 14.......... now I dunno anymore.... gg

Something like this?????
 

ameek

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3600 CAS14 vs 16. You will not see a real-world difference. Half a frame at most...maybe

One could possibly say that 3600 cas14, in theory, could future proof your 12900k DDR 4 platform (as ddr5 5200 becomes more readily available and with better/lower cas timings). In theory, I could see 2-3 fps more in bf 2042...... but who knows man. This is all "theoretical".


It's either ddr4 3600 cas16 32 gigs
OR
ddr4 3600 cas14 16 gigs

lol
decisions
decisions

I appreciate all the help, it would make me decide easier. I welcome more suggestions, thx.
 
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I was gonna go 2x8 DDR4 3600 cas 16 or cas 14.......... now I dunno anymore.... gg

Something like this?????

Get this 2x 16GB kit from G.skill
It's Samsung B-Die, which allows you to tweak the tREF (more effective than tweaking CAS alone).

As you can see from the article, 2x16GB 3600MT kit (Trident Z Royal) tops the chart every time on Intel side, beating every other 2x8GB 4400MT kit
 

ameek

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Get this 2x 16GB kit from G.skill
It's Samsung B-Die, which allows you to tweak the tREF (more effective than tweaking CAS alone).

As you can see from the article, 2x16GB 3600MT kit (Trident Z Royal) tops the chart every time on Intel side, beating every other 2x8GB 4400MT kit
woah thx, I was literally just looking at the same ram a second ago:
https://www.reddit.com/r/intel/comments/qtuh19
What settings would I see the tREF to?

Someone said they oced that exact kit you just linked to: "I have this kit on my 12900k and can easily get timings down to 14-15-15-36 at 1.45v, 3600. Gear 1"
 
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@ameek from someone who has 15 DDR4 kits on my table right now and 20 different video cards. I can tell you that it will be hard to spot the difference between CAS 14 and 16. You need to be playing at 1080P, have a RTX 3090 and a frame counter on. Its not to say CL14 doesn't have other benefits, but outside of benchmarks, its so little. Only if you have money to spare (or looks better), buy the kit with better timings.

Get this 2x 16GB kit from G.skill
It's Samsung B-Die, which allows you to tweak the tREF (more effective than tweaking CAS alone).
CL16 points to weaker Samsung-B. Otherwise it would be CL14. None the less. Jam 1.45v into it and see if it will do CL14.
 
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woah thx, I was literally just looking at the same ram a second ago:
https://www.reddit.com/r/intel/comments/qtuh19
What settings would I see the tREF to?

Someone said they oced that exact kit you just linked to: "I have this kit on my 12900k and can easily get timings down to 14-15-15-36 at 1.45v, 3600. Gear 1"

Sorry mistake the name, the timings you should be tweaking is tRFC and tREFI

tRFC: Refresh time window, set to 300 (defaults should be around 550)
tREFI: Time between refresh, set to 32676 (this timing increase your Timespy CPU score by 500 points alone)

These 2 timings matter more than lowering CAS from 16 to 14, although you can try reducing CAS latency also but don't worry if you can't, CAS 15 is also good. Limit RAM voltage to 1.45v when trying to reduce CAS as B-Die can get unstable once the temperature exceed 50C (with tweaked tRFC and tREFI)
 
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1638255551971.png

Helpful chart... my bdies start to complain around 150ns

source:
[Memory- Guide] tRFC clock cycles formula and chart : overclocking (reddit.com)
 
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Benchmark Scores CB20 4710@4.7GHz Aida64 50.4ns 4.8GHz+4000cl15 tuned ram SOTTR 1080p low 263fps avg CPU game
If you tweak your ram then 3600cl14 might do 3800cl14 at 1.5V, while the 3600cl16 might need 1.55V. No matter what you pick, overclock and tweak. If it's 2x8 you may be able to run 4000-4300, if it's 2x16 you will get 3600-4000. If you don't plan overclocking/tweaking get 3600cl16 given it's B-die 16 16 16, at xmp the difference is minor.
 
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I was able to get my Addlink 3600 CL18 ram down to CL16 without changing any voltages on my Asus Z690 board. I'm waiting for my Samsung B-die memory kit to arrive today for comparison.

Aida64 Extreme benchmark for my Addlink 3600 at XMP II settings:

Read: 56474 MB/s
Write: 52957 MB/s
Copy: 53200 MB/s

Latency: 60.9 ns
 
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