Ryzen 7600 ram 64gb vs 2 /4 channel,vs higher speed

[gasolin]

Asrock B650 pg lightning

Downgraded to a 7600, memory is 32 gb 6000mhz cl 30 flare x5 F5-6000J3038F16GX2-FX5

F5-6000J3038F16GX2-FX5 - Overview - G.SKILL International Enterprise Co., Ltd.

Designed for DDR5-enabled AMD AM5 platforms, Flare X5 series DDR5 memory is built for high performance in a low-profile design. Featuring AMD EXPO overclocking profiles for easy memory overclocking, users can easily enable overclocked performance by simply enabling EXPO in the BIOS on compatible...

www.gskill.com

Im interested in different memory, according to the QVL list for ryzen 7000 there is alot of 6400-7200mhz ram i can use

Internet say it's harder with 4 ram sticks but some tests say sometimes 32gb is faster, sometimes it's 64gb, the same with 2 and 4 ram sticks and the same can also be the case with 32gb 6000mhz cl 30 and 6400mhz cl 32

Forget that i like many people don't need 64 gb since im only interested in getting just a little more out of my system without having to oc above rated speed (reliable,heat)

64gb 2 or 4 ram stick (no less than 6000mhz cl 30 or 6400mhz cl 32 and so on)

32gb 6400 or 6800mhz cl 32 or mabye 34 if it's 6800mhz or faster (32gb to keep price down) vs 4 x 16 gb F5-6000J3038F16GX2-FX5 one pair for 120 euros (total 4 ram sticks)

32gb 6000mhz cl 28 is to expensive (around 200 euros, cheaper to buy 6400mhz cl 30 memory)

 

[Princess Garnet]

1. If you don't need more capacity, then adding more is going to be of no little to benefit.

2. More DIMMs is harder to run. That's basically a universal truth. Whether it matters or not, however, comes down to "is it preventing me from hitting my desired frequency". If it's not preventing you from reaching that point, then the "harder to run" point is moot. If it does prevent you from reaching that point, then you're giving up performance.

On DDR5, at least on AM5, four DIMMs will often prevent you from reaching 6,000 MHz+. You're likely looking at 4,800 MHz, 5,200 MHz, or 5,600 MHz with four DDR5 DIMMs on AM5, but it depends on motherboard, BIOS, the RAM, whether the RAM is single rank or dual rank, and so on. 6,000 MHz frequency you want to run at for those CPUs because that's a more or less guarantee of what the IMC/Infinity Fabric will reach on almost all CPUs. Some will do a bit higher but 6,400 MHz is often a gamble with silicon lottery.

So unless you need a capacity that can't be reached in two DIMMs, you should ideally opt for two DIMMs over four DIMMs. You can currently get up to 96 GB with two DIMMs. 128 GB+ is the point you need four. Once 64 GB consumer DIMMs that aren't low frequency release, that will move up.

3. The AM5 platform is not quad channel. Using four DIMMs will still be dual channel; you'll just have two DIMMs per channel instead of one. This can sometimes marginally help performance, usually if you're using single rank DIMMs because dual rank DIMMs see diminished benefit, and on AM5, you will likely not run four dual rank DIMMs without needing to lower the frequency anyway, which will hurt more than you gain from this.

If you already have 6,000 MHz CL30, I don't see the point in changing it unless you need more capacity.

 

[Bill_Bright]

2. More DIMMs is harder to run. That's basically a universal truth.

While perhaps true, that is misleading. Harder does not mean impossible nor does it suggest it is not worth considering. If my motherboard supported 4 sticks and I wanted to increase my RAM, I sure would NOT hesitate to simply add two more sticks of compatible RAM. We do it all the time here with NO problems. I did it on this machine I am using now. And it works great in dual channel.

In fact, it was easier and less expensive than replacing two smaller sticks with two bigger sticks - especially since the two pulled sticks don't even make good paper weights. Yeah, you might be able to sell them to recoup some money, but one should not count on a buyer wanting used, small sticks.

Where the reputation for "harder to run" comes in is with users who wish to tweak the clocks and operating voltages to over or under clock their systems. In some cases, it takes a little longer to fine tune for stability with 4 sticks instead of 2.

For the vast majority of users who simply wish to increase their RAM and intend to stick with the default settings, as the OP stated he intended, simply adding 2 more sticks is not harder to do and not harder to run.

Are there exceptions? Of course. But replacing 2 sticks with 2 bigger sticks does not always happen problem free either.

I mean seriously! Would it make sense for ASRock, Gigabyte, ASUS, MSI and other major motherboard makers to even make 4 slot motherboards if using 4 sticks was hard or problematic? Stick with the default settings and the odds are greatly in your favor you will have zero problems - assuming, of course, you do your homework and buy compatible RAM - the same requirement regardless if your board supports 2 or 4 (or 6 or 8) slots.

 

[gasolin]

4 slot mb is for those who do thing that needs more than 32 or 64gb that you can not buy in a 2 stick dual channel version

If you need to use 4 ram stick it's often a set of lower memory speed under 6000mhz and a cl 32 or higher since it's more likely to work with that speed with 4 ram slots

My memory is CL30-38-38-96 for under 100 euros i can get Team Group T-Create Expert DDR5-6000 - 32GB - CL30 30-36-36-76

will it be noticeable ? If i sell my memory 2 set of the team group (4x16gb) is total about the same price as if i would buy another pair of my flare x5 (699 for the team gorup and flare x5 899 ish of my currency, 500 for my current memory)

Team Group T-Create Expert DDR5-6000 - 32GB - CL30 or Team Group T-Force Vulcan DDR5-6000 - 32GB - CL30 ? 6-7 euro difference

 

[Bill_Bright]

4 slot mb is for those who do thing that needs more than 32 or 64gb that you can buy in a 2 stick dual channel version

Did you leave out the word "not"? As in, can not buy in a 2 stick version?

If you meant to include "not", then I agree. But that is not the only reason. There is no reason one cannot go 4 x 8GB, for example, as that boards supports that configuration too. This might be desirable if the user already has 8GB sticks on hand.

While there are µATX boards with 4 slots, most have 2 just because of the limited real estate. Full size ATX boards have lots more space so why not add extra slots?

 

[gasolin]

just under 94 euro a pair but more than 93 euros

I bought 2 pair of Team Group T-Create Expert DDR5-6000 - 32GB - CL30 30-36-36-76 to get 64 gb and better sub timings than my flare x5 CL30-38-38-96


CTCED532G6000HC30DC01 i think these and the last team memory difference is the colour

Not stated to be tested to work with 4 ram sticks, how are my chances that it they will work, have the latest bios, there was 2 new bios from december 2024

 

[sneekypeet]

Why not look at 48GB kits and split the difference?

Team is about the speed number, not performance at said speed.

 

[Bill_Bright]

Your chances are probably pretty good. But I sure cannot promise that.

 

[gasolin]

Did you leave out the word "not"? As in, can not buy in a 2 stick version?

If you meant to include "not", then I agree. But that is not the only reason. There is no reason one cannot go 4 x 8GB, for example, as that boards supports that configuration too. This might be desirable if the user already has 8GB sticks on hand.

While there are µATX boards with 4 slots, most have 2 just because of the limited real estate. Full size ATX boards have lots more space so why not add extra slots?

you can not buy in a 2 stick dual channel version

If you have 32 gb and want 64 gb total not all buy 2x32 gb but another 2x16gb kit

If you need more than 64gb it might not always be possible to buy 2 ram stiock in the right speed,cl 2 ram stick you can just about get in 2x16gb in the highest speed not alway in a 4 kit,stik version

 

[Bill_Bright]

you can not buy in a 2 stick dual channel version

Huh? You cannot buy what in a 2 stick, dual channel version?

 

[sneekypeet]

You may also want to revise the terminology. One stick of DDR5 is dual channel, two or more is quad channel.

 

[gasolin]

Why not look at 48GB kits and split the difference?

Team is about the speed number, not performance at said speed.

I won't buy 1x16gb of the memory i have and 2x 24gb memory is around 215 euros for 6000mhz cl 30, only corsair if you want 48gb 6000mhz cl 30

Cheapest 48gb is G.Skill Flare X5 Black DDR5 6000MHz 2x24GB with a cl of 40


just googled it 48gb (2 sticks) 6400mhz cl 32 is around 1350 of my currency 1398 i payed + shipping for 64gb 600mhz cl30

 

[ir_cow]

You may also want to revise the terminology. One stick of DDR5 is dual channel, two or more is quad channel.

One DIMM of DDR5 is Single-Channel over a single 64bit-bus split into two 32bit subchannels. Either you need a Threadripper or XEON to do quad-channel. However, Intel new 1851 CPUs runs in 2x32 per DIMM independently, so that is pretty close to quad-channel.

Though Intel still calls its dual-channel

 

[gasolin]

Huh? You cannot buy what in a 2 stick, dual channel version?

If you want alot of memory + 64gb you might not be able to get it in your prefered speed and cl with only 2 ram sticks

You can get just about any speed lets say 8000mhz cl 38 with 2 ram stick good luck finding 2x32gb 8000mhz cl 38 it has to be 4x16gb, 4x32gb or 4x48gb

You may also want to revise the terminology. One stick of DDR5 is dual channel, two or more is quad channel.

should have been dual memory sticks (2), you alway wanna have atleast 2 sticks to get highest performance from the speed cl you buy

 

[ir_cow]

To answer your initial question. The best performance for AMD will be highest frequency while still keeping the memory controller in a 1:1 ratio. essentially a really good CPU can do 6600, but most top out at 6400. If you can achieve that with dual-rank memory, even better. For that extra 1%, change the FCLK to match.

I'd say 2x 6400 CL30 Dual-Rank with 2133Mhz for the FCLK is the best you can hope for without abusive CPU voltages. It will stomp any single-rank configuration probably up to DDR5-10000.

 

[sneekypeet]

One DIMM of DDR5 is Single-Channel over a single 64bit-bus split into two 32bit subchannels. Either you need a Threadripper or XEON to do quad-channel. However, Intel new 1851 CPUs runs in 2x32 per DIMM independently, so that is pretty close to quad-channel.

Though Intel still calls its dual-channel
View attachment 380118

Yes 4 channels (quad).

 

[gasolin]

I skipped the higher speed and cl (32 or higher) for better sub timings 30-36-36-76 instead of 30-38-38-96 + 64gb

6000 mhz cl 30 is also more likely to work than 4 x 6400 mhz cl32

 

[ir_cow]

Yes 4 channels (quad).

Its been saying that since the launch of DDR5. CPU-Z considers the sub-channels as full channels, even though it goes over the same SINGLE 64bit-bus. Not true Quad-Channel in Intel or AMDs eyes.

 

[Toothless]

If you want alot of memory + 64gb you might not be able to get it in your prefered speed and cl with only 2 ram sticks

You can get just about any speed lets say 8000mhz cl 38 with 2 ram stick good luck finding 2x32gb 8000mhz cl 38 it has to be 4x16gb, 4x32gb or 4x48gb


should have been dual memory sticks (2), you alway wanna have atleast 2 sticks to get highest performance from the speed cl you buy

You're not hitting 8000 on four dimms in anything. That's just the fact.

There are PLENTY of 6000-6400 2x32 kits with good timings. Running four dimms will limit your ram clock due to IPC stress. This is also a fact.

 

[gasolin]

okay

I don't know what other cpu's then amd ryzen and intel i5-9 can do + i never had a super high end mb

On my local hardware forum the havn't talked about latest intel ultra what they can and can't do

I just think many want's high speed ram if they go all in with an i9 or ryzen 9 and a 90 gpu, limit for 1 set of high speed memory is 2x16gb

 

[Princess Garnet]

While perhaps true, that is misleading. Harder does not mean impossible nor does it suggest it is not worth considering. If my motherboard supported 4 sticks and I wanted to increase my RAM, I sure would NOT hesitate to simply add two more sticks of compatible RAM. We do it all the time here with NO problems. I did it on this machine I am using now. And it works great in dual channel.

That's arguing against something I never stated though. I said that more DIMMs is harder to run, not that it is impossible to work at all, nor that it isn't ever worth doing.

If you need more RAM, then adding more RAM, even if it means it needs to run slower, is still better than faster-but-not-enough capacity. I never disputed that. I was merely answering some asked questions.

I'm glad you got four DIMMs working, but you seem to be running DDR4 and at 3,000 MHz? If so, that isn't terribly difficult to achieve. I'm running four DIMMs of dual rank DDR4 at 3,600 MHz (and my previous DDR3 and DDR2 platforms were also done with four DIMMs), so I'm not unaware of what can be done. The thread starter is using DDR5 though, and DDR5 pushed things from "the extra demand of four DIMMs over two DIMMs probably only shows itself to those chasing very high frequencies" to "it has a good chance to prevent you from merely reaching 6,000 MHz on AM5".

Since the thread starter is currently running at 6,000 MHz right now, it means adding more DIMMs is likely going to result in paying money to go backwards in frequency... meaning it should only be done if they need the extra capacity (which I did state). Maybe I'm wrong, but someone asking "I heard 32 GB is sometimes faster and other times 64 GB is faster" doesn't exactly come off to me as someone who knows they need more RAM than they currently have.

But even if they do need more capacity, I only answered by stating that a four DIMM configuration would result in less performance than a two DIMM configuration of the same capacity, because it is true. I did not state that adding two DIMMs to an existing two as a cheaper option as opposed to buying two replacement DIMMs should be off the table. Either one of those are viable options.

 

[gasolin]

2x16gb 8000 mhz cl 38 or 4x16gb 6000mhz cl30

The first migt only be possible with intel the second should be possible for both

Here 0.1% and 1% lows can benefit from more ram (6400mhz corsair) I doubt i see these improvements in at 1440p

That's arguing against something I never stated though. I said that more DIMMs is harder to run, not that it is impossible to work at all, nor that it isn't ever worth doing.

If you need more RAM, then adding more RAM, even if it means it needs to run slower, is still better than faster-but-not-enough capacity. I never disputed that. I was merely answering some asked questions.

I'm glad you got four DIMMs working, but you seem to be running DDR4 and at 3,000 MHz? If so, that isn't terribly difficult to achieve. I'm running four DIMMs of dual rank DDR4 at 3,600 MHz (and my previous DDR3 and DDR2 platforms were also done with four DIMMs), so I'm not unaware of what can be done. The thread starter is using DDR5 though, and DDR5 pushed things from "the extra demand of four DIMMs over two DIMMs probably only shows itself to those chasing very high frequencies" to "it has a good chance to prevent you from merely reaching 6,000 MHz on AM5".

Since the thread starter is currently running at 6,000 MHz right now, it means adding more DIMMs is likely going to result in paying money to go backwards in frequency... meaning it should only be done if they need the extra capacity (which I did state). Maybe I'm wrong, but someone asking "I heard 32 GB is sometimes faster and other times 64 GB is faster" doesn't exactly come off to me as someone who knows they need more RAM than they currently have.

But even if they do need more capacity, I only answered by stating that a four DIMM configuration would result in less performance than a two DIMM configuration of the same capacity, because it is true. I did not state that adding two DIMMs to an existing two as a cheaper option as opposed to buying two replacement DIMMs should be off the table. Either one of those are viable options.

It's more a because i can upgrade

See if my pc (mb) can handle 4 memory sticks (i had so much time ordering the ram within the time limit, i even ordered the second pair after the time limit and both pairs are shipped, i just forgot to check if the memory are supported in what i call quad channel, 4 ram sticks), also was surprised the memory have lower subtimings

 

[ir_cow]

DDR5-8000 on AMD is possible on X870 motherboards or one of the 2-slot X670 motherboards. While I can boot 8000 MT/s on 4-slot X670, the ones I tested never were stabled. Granted if you have a nice IMC, it should easier to achieve.

In these charts for CS2, 6400 MT/s w/ FCLK 2000Mhz is dual-rank and in many ways, basically the same as 4x single rank. These are non-tuned as well. Surprisingly even though AMD is really about low latency, the 8000 MT/s pulls ahead with higher bandwidth.



Some nice low latency dual-rank memory like KLEVV Fit-V just destroys everyone else for $90.

 

[gasolin]

8000 mhz om ryzen

How is infinity fabric ? 1:1 ?

Still wouldn't try more than 6400mhz memory

I ran the super cheap ripjaws 4000mhz cl 18 at 3733mhz cl 16 on msi mb with some ryzen 5000 it ran stable other mb,cpu combos it didn't

AMD Ryzen 5 5600 @ 4448.96 MHz - CPU-Z VALIDATOR

[5um3nc] Validated Dump by DESKTOP-NEPLQTO (2023-01-24 09:58:46) - MB: MSI B550-A PRO (MS-7C56) - RAM: 32768 MB

valid.x86.fr

 

[ir_cow]

8000 mhz om ryzen

How is infinity fabric ? 1:1 ?

No. 1:1 is impossible over 6600 from what I've seen.