Downlocking 4500Mhz RAM

[TheNaitsyrk]

I have 4x8GB DDR4 4500Mhz C19 RAM.

 

I want to downclock it on AORUS MASTER Z390 and 9900K system.

 

What should I downclock it to? 4266 C18? Would that work?

 

I don't have it yet but it's on the way to me, and I know goddamn well it will not reach 4500Mhz 'cause that's stupid high.

[WickedStarfish]

3 minutes ago, TheNaitsyrk said:

I have 4x8GB DDR4 4500Mhz C19 RAM.

 

I want to downclock it on AORUS MASTER Z390 and 9900K system.

 

What should I downclock it to? 4266 C18? Would that work?

 

I don't have it yet but it's on the way to me, and I know goddamn well it will not reach 4500Mhz 'cause that's stupid high.

what psu are you using?

[TheNaitsyrk]

1 minute ago, WickedStarfish said:

what psu are you using?

HX1200i.

 

Not really relevant....

[WickedStarfish]

1 minute ago, TheNaitsyrk said:

HX1200i.

 

Not really relevant....

is a little as power supply to the ram will be one of the 2 deciding factors 

and the motherboard should automatically set it at the highest speed it will allow (if the mobo supports 4500Mhz than it will use that, if it only supports 3200Mhz than it will run it at that (from my understanding))

[Origami Cactus]

Just start to go from highest to lowest. Start from 4500mhz, go down from there if needed, test for stability.

[TheNaitsyrk]

Just now, Origami Cactus said:

Just start to go from highest to lowest. Start from 4500mhz, go down from there if needed, test for stability.

Aye sounds like a plan.

[Jurrunio]

do you just want high MHz because it looks cool, or you're after performance?

 

Since you're on 4 sticks, I'd start testing with 3466MHz first, see how low timings will go and get AIDA64 cache and memory benchmark results. Repeat with 3600MHz, 3866MHz and 4000MHz

[TheNaitsyrk]

Just now, Jurrunio said:

do you just want high MHz because it looks cool, or you're after performance?

 

Since you're on 4 sticks, I'd start testing with 3466MHz first, see how low timings will go and get AIDA64 cache and memory benchmark results. Repeat with 3600MHz, 3866MHz and 4000MHz

I'll just set it to 4500 and see where that takes me.

[Jurrunio]

Just now, TheNaitsyrk said:

I'll just set it to 4500 and see where that takes me.

most likely garbage memory timings, though I'm interested to see it run

[TheNaitsyrk]

4 minutes ago, Origami Cactus said:

Just start to go from highest to lowest. Start from 4500mhz, go down from there if needed, test for stability.

Yeah makes sense. I was just wondering if I should reduce timings when if I go to 4266 due to possible instability.

[TheNaitsyrk]

Just now, Jurrunio said:

most likely garbage memory timings, though I'm interested to see it run

I don't think C18 on 4500 is garbage (if it runs). YT ram tests show consistent FPS increase on Intel and on Ryzen it will be really helpful 'cause I can set it as high as Ryzen allows.

[Jurrunio]

1 minute ago, TheNaitsyrk said:

(if it runs)

that's the problem. on 2x8gb that's easy on a good pair of Samsung b-die or Samsung e-die with enough dimm voltage, on 4x8gb that's highly unlikely to work.

[TheNaitsyrk]

1 minute ago, Jurrunio said:

that's the problem. on 2x8gb that's easy on a good pair of Samsung b-die or Samsung e-die with enough dimm voltage, on 4x8gb that's highly unlikely to work.

We'll see what it can do.

[Origami Cactus]

2 minutes ago, TheNaitsyrk said:

We'll see what it can do.

Just use this calculator to see if it is better to run at lower speed but better timings, put your results into this and compare.

https://notkyon.moe/ram-latency.htm

[Tennida]

Just put it on auto and just let your motherboard do the job

[TheNaitsyrk]

3 minutes ago, Origami Cactus said:

Just use this calculator to see if it is better to run at lower speed but better timings, put your results into this and compare.

https://notkyon.moe/ram-latency.htm

Looks pretty good.

 

[nick name]

https://www.overclock.net/forum/5-intel-cpus/1569364-official-intel-ddr4-24-7-memory-stability-thread.html

[Tristerin]

IMHO Frequency over timings.  Testing my 2133mhz kit CL14 vs OCing it to 2667mhz CL 18 - I get better benches, and tighter frame rates at the higher frequency but crap timings compared.  Go as high as the frequency will stabilize, timings be damned imho

[TheNaitsyrk]

9 hours ago, Tristerin said:

IMHO Frequency over timings.  Testing my 2133mhz kit CL14 vs OCing it to 2667mhz CL 18 - I get better benches, and tighter frame rates at the higher frequency but crap timings compared.  Go as high as the frequency will stabilize, timings be damned imho

This is where I am at the moment.

[Tristerin]

1 minute ago, TheNaitsyrk said:

This is where I am at the moment.

Pretty sexy!

[TheNaitsyrk]

I'll try 4100 C16, see if that boots.

[TheNaitsyrk]

Managed to get it even further beyond! C16 did not crash.

[TheNaitsyrk]

4200 C17.