AMD 7000-series DDR5 memory sweet spot?

[wheresmycar]

From the last few months of lightly treaded observations i understand 5600/6000Mhz 28-32CL memory sticks for 7000-series processers is a good target. At the same time, im seeing user input suggesting they're unable to register those speeds especially with EXPO enabled. Some have settled with the default speeds for now in hopes of BIOS/firmware/Windows updates to resolve the issues. Some are running these speeds without a problem, although not sure if this group of users are manually configuring memory settings.

In short, i'm hoping 7000-series owners can add their input on what to expect, experiences, tweaking configurations, etc etc and in addition or anyone elses input, any useful info, memory selection recommendations, etc.

If it matters... ive encouraged a friend to grab a 7600 paired with either of the following 3 boards: Gigabyte B650M GAMING X AX / Asus PRIME B650M-A WIFI II / MSI PRO B650M-A WIFI (the under ~£200 category of boards).

 

[Deleted member 223428]

32GB 6000/CL30 with EXPO settings on a MSI Pro X670-P without any issues. Set and go. I did end up dropping SoC voltage as it was set way too high (in my opinion) when enabling EXPO. One thing to keep in mind is that even though that's a entry level board, it's still an 8 layer PCB which may or may not lead to better stability. Might not be best to cheap out on the board. Saving 100 %moneyunits% isn't worth the hassle.

This kit:

Amazon.com

 

[ir_cow]

DDR5-6000 for 2x16 GB is the sweet spot for AMD. While I only have 2 CPUs and tested about 10 motherboards, they all do with 2:1:1 Ratio. A few automatically are 2:2:1, one needed a bump to the SoC voltage for 2:1:1, but this isn't a big issue. EXPO/XMP boots on all of them and passes memtest5 just by enabling XMP/EXPO if you don't want to play with FLCK:MEM ratio stuff.

If you are going for 64GB (2X32GB), you will probably be stuck at 5600 with 2:2:1 unless you are willing to play with the SoC voltage yourself. Its hit or miss with the motherboard ability to set this correctly.

Going with 128GB (4x32GB), it's going to be around 4800.

A few forum members say 6000 128GB works, but honestly, just because it can boot, DOES NOT MEAN ITS STABLE! Cannot make this more clear people....

 

[evernessince]

I'm running a 7700X with DDR5 6000 CL30 EXPO enabled no problem. Zero tinkering required, works out of the box.

6000 with two 16GB sticks should work on essentially every 7000 series processor, which is why it's the sweet spot. 5600 should absolutely not have any issues even on the cheapest motherboards.

If you experience memory instability, you can lower the frequency a bit. Doesn't make any sense to lower it all the way down to base spec.

 

[ir_cow]

If it matters... ive encouraged a friend to grab a 7600 paired with a Gigabyte B650M GAMING X AX / Asus PRIME B650M-A WIFI II / MSI PRO B650M-A WIFI (the under ~£200 category of boards).

Your friend isn't going to be happy that DDR5-7600 doesn't work. I can guarantee it will not.
Edit: NVM I thought you were talking about memory here. you mean Ryzen 7600X

 

[DemonicRyzen666]

DDR5-6000 for 2x16 GB is the sweet spot for AMD. While I only have 2 CPUs and tested about 10 motherboards, they all do with 2:1:1 Ratio. A few automatically are 2:2:1, one needed a bump to the SoC voltage for 2:1:1, but this isn't a big issue. EXPO/XMP boots on all of them and passes memtest5 just by enabling XMP/EXPO if you don't want to play with FLCK:MEM ratio stuff.

If you are going for 64GB (2X32GB), you will probably be stuck at 5600 with 2:2:1 unless you are willing to play with the SoC voltage yourself. Its hit or miss with the motherboard ability to set this correctly.

Going with 128GB (4x32GB), it's going to be around 4800.

A few forum members say 6000 128GB works, but honestly, just because it can boot, DOES NOT MEAN ITS STABLE! Cannot make this more clear people....

what speed mhz (6400mhz+) does it auto shift from 2:1:1 to 2:2:1 ?
& which is Fclk, Uclk, & memclk ?

 

[ir_cow]

what speed mhz (6400mhz+) does it auto shift from 2:1:1 to 2:2:1 ?
& which is Fclk, Uclk, & memclk ?

While AGEAS updates have helped, 6400+ fully stable is gamble. AM5 / Ryzen 7000 series has the FLCK at 2000 MHz by default and you don't generally have to mess with this. I couldn't surpass 2033 myself and going down only kinda helped with 4 DIMMs. I haven't explored the impact of lower FLCK yet.

Technically the 2 is FLCK, but its not a big factor anymore, not linked and AMD says to ignore it. Old habits carried over from DDR4. Really its just 2:1 and 1:1 to the memory controller and memory.

The shift to 2:1 happens anywhere at 5600 and above for 2 x Single Rank. Automatically 2:1 for Dual Rank (3600+). You can of course change this in the BIOS. Without manually adjusting the SoC voltage too, it will be up the motherboards training abilities to set it correctly. Like I said before AGEAS updates have help a lot. However only 1 MB was stable with 6400 so far that I recall. A few booted, but failed memory tests. It could just be the limit of the CPU IMC I have. That or it needs a whole lot more voltage, beyond what is considered safe for daily. Just understand the XOC guys aren't passing 7000.

 

[DemonicRyzen666]

Just understand the XOC guys aren't passing 7000.

My problem with XOC guys is they aren't ever usually running 2:2:1 ever. They always try to keep 2:1:1 from what I've seen, so far.

 

[wheresmycar]

32GB 6000/CL30 with EXPO settings on a MSI Pro X670-P without any issues. Set and go. I did end up dropping SoC voltage as it was set way too high (in my opinion) when enabling EXPO. One thing to keep in mind is that even though that's a entry level board, it's still an 8 layer PCB which may or may not lead to better stability. Might not be best to cheap out on the board. Saving 100 %moneyunits% isn't worth the hassle.

This kit:

Amazon.com

Glad you linked that kit... i had the same in mind but the non-Neo variant. I take it the Neo stuff is the better variety?

DDR5-6000 for 2x16 GB is the sweet spot for AMD. While I only have 2 CPUs and tested about 10 motherboards, they all do with 2:1:1 Ratio. A few automatically are 2:2:1, one needed a bump to the SoC voltage for 2:1:1, but this isn't a big issue. EXPO/XMP boots on all of them and passes memtest5 just by enabling XMP/EXPO if you don't want to play with FLCK:MEM ratio stuff.

If you are going for 64GB (2X32GB), you will probably be stuck at 5600 with 2:2:1 unless you are willing to play with the SoC voltage yourself. Its hit or miss with the motherboard ability to set this correctly.

Going with 128GB (4x32GB), it's going to be around 4800.

A few forum members say 6000 128GB works, but honestly, just because it can boot, DOES NOT MEAN ITS STABLE! Cannot make this more clear people....

He's definitely going with a 32GB kit (gaming, etc). Out of the 10 tested boards do any of them resemble the lower tier 3 i mentioned - Gigabyte B650M GAMING X AX / Asus PRIME B650M-A WIFI II / MSI PRO B650M-A WIFI.

Also can you link which 2x16 memory kit you used?

I'm running a 7700X with DDR5 6000 CL30 EXPO enabled no problem. Zero tinkering required, works out of the box.

6000 with two 16GB sticks should work on essentially every 7000 series processor, which is why it's the sweet spot. 5600 should absolutely not have any issues even on the cheapest motherboards.

If you experience memory instability, you can lower the frequency a bit. Doesn't make any sense to lower it all the way down to base spec.

Sorry care to share which memory kit and board you're using?

EDIT: just checked your specs, X670E taichi.... thats one pricey but juicy looking board. I guess @Super Firm Tofu also mentioned possibly venturing a little higher on the board type which might be the way to go about it to lock onto this higher memory frequencies.

---------------

Guys any reliable online material or video insight in wrapping our heads around all the SOC, ratios and other tinkering solutions for DDR5 memory on AMD platforms? I'm familiar with intel tweak/OC settings so i'm sure it shoudn't be hard to to get to grips with.

 

[ir_cow]

My problem with XOC guys is they aren't ever usually running 2:2:1 ever. They always try to keep 2:1:1 from what I've seen, so far.

6600 doesn't even boot for me with 2:1 and FLCK of 1500 MHz + some extra SoC voltage...sooo. It's probably not a common thing.

He's definitely going with a 32GB kit (gaming, etc). Out of the 10 tested boards do any of them resemble the lower tier 3 i mentioned - Gigabyte B650M GAMING X AX / Asus PRIME B650M-A WIFI II / MSI PRO B650M-A WIFI.

Unfortunately Its only motherboards that are sent to me I can test. The Lowest one I have is GB X670 Elite AX and haven't tested it yet. The next cheapest would be GB B650E Master ($350) tested. I don't know how the lowest stack will perform. I assume 5600-6000 will be alright for 2x16B. This is when I say follow the QVL MB list.

Also can you link which 2x16 memory kit you used?

Last memory review that is within AMD's realm has them all listed. I have a few more to add for the next upcoming review like Kingston 5600 64GB and Corsair 48GB kit, but you get the point.

KLEVV CRAS XR5 DDR5-6200 CL40 Review

KLEVV brings forward the CRAS XR line to the DDR5 market. Equipped with a 6200 MT/s XMP profile using modest CL40-42-42-78 timings, KLEVV is targeting gamers and PC enthusiasts alike. Follow along as we test this memory and see how it stacks up the competition!

www.techpowerup.com

 

[DemonicRyzen666]

6600 doesn't even boot for me with 2:1 and FLCK of 1500 MHz + some extra SoC voltage...sooo. It's probably not a common thing.

Why were you trying boot at 2:1:1 ?
Of course it won't boot. you have to change it to 2:2:1 first before you change anything else.
There is bug in many boards, that if you change anything else it won't boot while chaning FCLK simitouisly on reboot.
I had this on my 5600x & msi gaming edge & asus Board. Just changing the Flck & the ram down 1 step, the board won't boot. However changing each one at time then rebooting it works fine. ¯\_(ツ)_/¯

 

[ir_cow]

Why were you trying boot at 2:1:1 ?

I'm not. Remember the 2 in 2:1:1 doesn't exist anymore for AM5. Its just X:2:1 or X:1:1. I realize I'm confusing you here. But I was wrong in the first place to say it (and in the reviews as well).

There is bug in many boards, that if you change anything else it won't boot while chaning FCLK simitouisly on reboot.

I am well aware of the oddities of AM5. Spent waay to many hours dicking with settings.

 

[Deleted member 223428]

Glad you linked that kit... i had the same in mind but the non-Neo variant. I take it the Neo stuff is the better variety?

The Neo is the AMD specific version. I believe this kit only has EXPO setting and no XMP. Not really a big deal as the AMD boards can read XMP and EXPO, and the same with Intel boards.

That's the kit I had and is also the same as sites like HUB uses for their testing. I think it was also the kit sent out by AMD at launch to the review sites as the recommended RAM.

 

[ir_cow]

The Neo is the AMD specific version. I believe this kit only has EXPO setting and no XMP. Not really a big deal as the AMD boards can read XMP and EXPO, and the same with Intel boards.

Yep +1. Every AMD MB I've seen supports XMP. Its Intel that needs a BIOS update to read EXPO (if ever supported).

I do have a minor correction. I've had a few kits simply not boot after enabling XMP on AMD. They were all 6600+ with the freq lowered to 6000. IDK if this just confused the MBs, but a 6400 kit lowered to 6000 is okay. Just trying to say not all memory kits even with a lower freq will boot. I'm usually one to tell people that QVL lists are pointless, however it has become more important for AM5...kinda like when Ryzen first came out. Same problem. Only Samsung DDR4 ICs memory worked at like DDR4-2400. Hynix refused to boot if I recall.

 

[The Von Matrices]

I haven't been able to get my board to complete Memtest86 at DDR5-6000 so I am running DDR5-5600 right now. After a lot of head-scratching, I think it may be a temperature issue. Supposedly these Hynix chips are sensitive to higher temperatures. I have to try putting a fan on the memory and seeing if that allows higher speeds.

 

[ir_cow]

I think it may be a temperature issue. Supposedly these Hynix chips are sensitive to higher temperatures. I have to try putting a fan on the memory and seeing if that allows higher speeds.

Unless your hitting 70c, it shouldn't be a issue. Could be your MB doesn't like 1:1 Ratio, context restore is on or something else like 4 DIMMs, Dual-rank, etc...

 

[wheresmycar]

Assuming the ~6000mhz is problematic on some of the lower tier boards.... is this something that may be resolved over time through firmware/BIOS/OS updates?

After speaking to him today, he doesn't fancy spending too much on top but is willing to stretch his legs to ~£250 with a WIFI-integrated board

Today i was able to locate some various DDR5 frequency benchmarks for games and it seems 6000/30 doesn't necessarily achieve a huge performance uplift over lets say something like 5200/36.

So i'm looking to suggest getting a 6000/30 kit and see how he gets on and in a worst case scenario settle with a lower frequency at negligible performance loss. Recommended advice? If it makes sense my theory being, whether a entry or mid-tier board can hit the spec or not, 6000/30 may be more useful during the lifespan of the platform (updates or eventually upgrading to 8000/9000-series CPUs)

 

[oxrufiioxo]

Assuming the ~6000mhz is problematic on some of the lower tier boards.... is this something that may be resolved over time through firmware/BIOS/OS updates?

After speaking to him today, he doesn't fancy spending too much on top but is willing to stretch his legs to ~£250 with a WIFI-integrated board

Today i was able to locate some various DDR5 frequency benchmarks for games and it seems 6000/30 doesn't necessarily achieve a huge performance uplift over lets say something like 5200/36.

So i'm looking to suggest getting a 6000/30 kit and see how he gets on and in a worst case scenario settle with a lower frequency at negligible performance loss. Recommended advice? If it makes sense my theory being, whether a entry or mid-tier board can hit the spec or not, 6000/30 may be more useful during the lifespan of the platform (updates or eventually upgrading to 8000/9000-series CPUs)

Just send these to your buddy and let him decide.

 

[wheresmycar]

Just send these to your buddy and let him decide.

SNAP! the top and bottom last video is what we've been looked at. Gonna check out and share the 2nd one too.

thanks

 

[Space Lynx]

I was leaning on getting the 7800x3d recently, but honestly the memory retraining that AM5 does at every boot just seems so primitive to me in retrospect. Having experienced it once, it just seems a bad design. I think they should have just left things static the way they have always been.

I personally will be passing on AM5 and going with Intel, unless I can find a used 5800x3d for my current build.

 

[dont whant to set it"']

My AM5 rig has issues that it cant set the command rate to 2 when applying the D5-4400MT and 4800MT be it from D.O.C.P. I( primary timings to be loaded from XMP) D.O.C.P. II (primary and secondary timings)
RAM is QVL, no command rate setting present in BIOS/UEFI.

@Space Lynx its not after every reboot/restart , only from a cold start/complete power loss(drained).

le: ortho. .
4000MT does get it with 2T CR (current config)
I might see if new bios/agesa available and flash that, but ain't gettin' my hopes up .
Paid £570 some odd or even for this ASUS board to be thrown under the bus kind off.

 

[Space Lynx]

My AM5 rig has issues that it cant set the command rate to 2 when applying the D5-4400MT and 4800MT be it from D.O.C.P. I( primary timings to be loaded from XMP) D.O.C.P. II (primary and secondary timings)
RAM is QVL, no command rate setting present in BIOS/UEFI.

@Space Lynx its not after every reboot/restart , only from a cold start/complete power loss(drained).

le: ortho. .
4000MT does get it with 2T CR (current config)
I might see if new bios/agesa available and flash that, but ain't gettin' my hopes up .
Paid £570 some odd or even for this ASUS board to be thrown under the bus kind off.

I turn off my PC every night. I don't trust Sleep or Hibernate, I have had it mess up too many times in old days. I manually disable those features. So Intel only for me in future sadly.