If CL30 6000MHz is the sweet spot for 32gb(2x16) of RAM on AM5 boards. What is it for 64gb(2x32)?

Absolutely Clueless said:
I was surprised when i first saw the 'cheap' Corsair 6000MHz RAM. Thankfully it wasn't on sale when I bought my G.Skill kit. Hope you get any issues resolved! Not very helpful i know, but the G.Skill 6000C30 kit is rock solid.
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I went G.Skill, too. My preference is to always buy RAM on the mobo QVL (which this model is). It guarantees a set and forget setup, with the OCing I personally do being the extra performance I may achieve. Not the "will it run stable above JEDEC?" approach instead.

It's a royal PITA to have RAM that just doesn't work properly.
 
aaronyuri said:
I went G.Skill, too. My preference is to always buy RAM on the mobo QVL (which this model is). It guarantees a set and forget setup, with the OCing I personally do being the extra performance I may achieve. Not the "will it run stable above JEDEC?" approach instead.

It's a royal PITA to have RAM that just doesn't work properly.
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Yes, with my last system I had no end of problems and sticks replaced so now I will only buy QVL and ram that is recommended and has good reviews, even if it does end up costing a lot more, it's worth it not to have the headache
 
aaronyuri said:
I went G.Skill, too. My preference is to always buy RAM on the mobo QVL (which this model is). It guarantees a set and forget setup, with the OCing I personally do being the extra performance I may achieve. Not the "will it run stable above JEDEC?" approach instead.

It's a royal PITA to have RAM that just doesn't work properly.
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Well yes and no. QVL RAM lists do sometimes have kits that won't work with retail CPU/Motherboards.

E.g., you can have 8000 MT/s RAM on a QVL list that almost certainly won't work with 99.9% of all CPUs but does work with CPUs that have very good integrated memory controllers.

Computers are complex and vary from build to build so you can have systems that work with QVL RAM and ones that don't.

That being said, sticking to good quality realistically specced RAM is almost always a good idea - e.g., don't go 6400 MT/s speed RAM for your AM5 setup when a lot of times, it won't work and you'd be better off with 6000 MT/s CL30 unless you're prepared to tweak and play around.
 
in my experience of having both a gskill royal expo kit and a kingston fury beast expo kit (both hynix A die), the gskill kit runs cooler 42c overclocked under full load vs 50odd c for kingston and there have been talks of gskill actually adding thermal pads in all the right places, where some other manufacturers skimp out which is likely part of the reason why you pay more for a gskill kit. i also think even though are both a die, the g skill kit is a better binned a die (also something i believe g skill do is they provide a better bin than required) kit as it can be pushed a lot further, both have exact same timings and sub timings etc. i/e you get what you pay for as an overclocker, but if you want stock grab anything of the shelf and itl be fine.
 
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JollyJamma said:
Well yes and no. QVL RAM lists do sometimes have kits that won't work with retail CPU/Motherboards.

E.g., you can have 8000 MT/s RAM on a QVL list that almost certainly won't work with 99.9% of all CPUs but does work with CPUs that have very good integrated memory controllers.

Computers are complex and vary from build to build so you can have systems that work with QVL RAM and ones that don't.

That being said, sticking to good quality realistically specced RAM is almost always a good idea - e.g., don't go 6400 MT/s speed RAM for your AM5 setup when a lot of times, it won't work and you'd be better off with 6000 MT/s CL30 unless you're prepared to tweak and play around.
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You need a good IMC to run 1:1 with Infinity Fabric, not to clock the memory high.

My main comment about QVL is that the RAM will always work. It's not a case of putting it in and finding out the board won't POST due to incompatibility, or having stability issues at JEDEC frequencies and timings. All memory modules come with JEDEC frequencies in the SPD profiles.

I'm not saying QVL presence guarantees OC rated speeds - it guarantees compatibility.

Edit: Just realised I wrote "above JEDEC" in my previous post and not "at JEDEC". That's indeed wrong; I was tired.
 
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aaronyuri said:
I'm not saying QVL presence guarantees OC rated speeds - it guarantees compatibility.
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Manufacturers can change practically everything on the stick except the model number, so while I'd suggest you're more likely to have no issues, there's not a guarantee, especially if a long period of time has passed between the QVL being produced and the memory being purchased.
 
Tetras said:
Manufacturers can change practically everything on the stick except the model number, so while I'd suggest you're more likely to have no issues, there's not a guarantee, especially if a long period of time has passed between the QVL being produced and the memory being purchased.
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Good point re time passing, but the QVL is an essential starting point at the very least. To me it was clear with AM5 that the G.Skill ram is the most compatiable when AMD gave it to every single reviewer. That sold me on it. Thankfully it stayed the same for Zen 5, so upgrading to the 9800X3D didn't require new ram either to get the most from it :D
 
So just for the sake of clarification, more than 6400 - 8000mhz is not very good for AMD (esp 9800x3d) ?
 
Varys said:
So just for the sake of clarification, more than 6400 - 8000mhz is not very good for AMD (esp 9800x3d) ?
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It is if you can't stay 1:1 with Infinity Fabric, but staying 1:1 requires a pretty good IMC in your CPU. My current CPU can do 6400 1:1 but that's its limit. Some don't even do 6000 1:1.

Really high memory clocks and decent timings can overcome the higher latency of a 1:2 divider on IF.

www.techpowerup.com

DDR5 Memory Performance Scaling with AMD Zen 5

Our AMD Zen 5 Memory Scaling Review examines six different DDR5 memory speeds, including DDR5-8000, DDR5-6400 1:1, DDR5-6400 CL28 and others. We looked into how these speeds impact performance in gaming at four resolutions and a wide range of application workloads.
www.techpowerup.com www.techpowerup.com

There's not much in it whichever you choose. 1-2% overall. The easiest thing is to aim for 6000 as your target with 1:1. It's also easy to do with EXPO - set and forget on most builds.

relative-performance-cpu.png
 
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Is 2x32gb the preferred config after 2x16gb? i know 2x24 and 2x48 are also an option. I personally don't see a need (for my use case) for 2x48gb. Realistically 2x16 would be fine, but i have 32gb ddr4 currently and would like to future proof a bit by stepping up to either 2x32 or 2x24gb. They are very similarly priced which is unfortunate. 2x24 is £175 and 2x32 is £199
 
Gershy13 said:
Is 2x32gb the preferred config after 2x16gb? i know 2x24 and 2x48 are also an option. I personally don't see a need (for my use case) for 2x48gb. Realistically 2x16 would be fine, but i have 32gb ddr4 currently and would like to future proof a bit by stepping up to either 2x32 or 2x24gb. They are very similarly priced which is unfortunate. 2x24 is £175 and 2x32 is £199
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It’s really up to you and your use case.

Only you can know how much RAM you’ll need based on your use case.

2 by 16gigs should be fine for sometime. 2 by 24 is great and if it’s not much more, go for that.

With that being said, it’s up to you.
 
Gershy13 said:
Is 2x32gb the preferred config after 2x16gb? i know 2x24 and 2x48 are also an option. I personally don't see a need (for my use case) for 2x48gb. Realistically 2x16 would be fine, but i have 32gb ddr4 currently and would like to future proof a bit by stepping up to either 2x32 or 2x24gb. They are very similarly priced which is unfortunate. 2x24 is £175 and 2x32 is £199
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Price wise 2x32GB seems to be slightly ahead of 2x24GB in £/GB so that's the way I went.
 
Gershy13 said:
Is 2x32gb the preferred config after 2x16gb? i know 2x24 and 2x48 are also an option. I personally don't see a need (for my use case) for 2x48gb. Realistically 2x16 would be fine, but i have 32gb ddr4 currently and would like to future proof a bit by stepping up to either 2x32 or 2x24gb. They are very similarly priced which is unfortunate. 2x24 is £175 and 2x32 is £199
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2x24 is £175? The Crucial Pro kits are not much over £100. Depends how fast you want, ofc.
 
Tetras said:
2x24 is £175? The Crucial Pro kits are not much over £100. Depends how fast you want, ofc.
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Minstadave said:
Yeah prices look pretty OK at the moment for 2x24GB. Crucial Pro looks decent if not bothered about CAS latency or Klevv CRAS V if needing 6000mhz CL30.
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Looking specifically for 6000 cl30. Should have probably mentioned i was looking specifically at corsair RGB kits as i have corsair lighting in the rest of my system. The Klevv kit looks like good value if i wasn't needing to stick to icue.

I'll probably go with 2x32gb as i can get a small discount on corsair memory directly through their site.
 
Gershy13 said:
Looking specifically for 6000 cl30. Should have probably mentioned i was looking specifically at corsair RGB kits as i have corsair lighting in the rest of my system. The Klevv kit looks like good value if i wasn't needing to stick to icue.

I'll probably go with 2x32gb as i can get a small discount on corsair memory directly through their site.
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Yeah if looking at Corsair then you're best going 2x32.
 
FREDBEDHEAD said:
New system and feel I should future-proof somewhat with 64gb. I see many say that 2 sticks of 16gb 30cl 6000mhz ram is the sweet spot for a AM5 32gb kit. Is there a similar consensus on a 64gb kit?
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I will say that the sweet spot now it’s tha new 6000mhz cl26. From GSkill or Lexar. Really amazing ram probably best on the market. I managed auto bring it to 8532mhz on Intel platform full stable.
 
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