Ryzen RAM 32GB/3200mhz help

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jjjay999

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Hello, I'm really having some problems with my RAM. It won't run at the correct speed, unless I loosen the timings, it crashes, It won't even boot. I've already gone through with an RMA, but my question is this:

I have a 1800X Ryzen CPU, ASUS crosshair VI Hero motherboard and I need 32GB RAM. Currently I tried vengeance lpx 2800mhz/C14 and it won't run above 2666mhz/C15. Are there any good 32GB RAM kits that will work with Ryzen at their reported speed? I'm planning on moving up to 3200mhz RAM, and a CLS of 14-16 would be preferable. I don't care what brand, and it can be 4x8GB or 2x16GB. I do somewhat prefer Corsair, G. Skill too but really any reputable, reliable RAM I'll be fine with. I've already ordered a 1080TI, and I chose to go with 3200mhz RAM because the performance increase is quite substantial in gaming, and the speed will help with other things I use my PC for, also I'm running at 4K/60hz now. Thank you everyone, I did already check the QVL, and there are two G. Skill 32GB RAM 3200mhz RAM kits that are listed as compatible, but I can't find them anywhere. I live in USA. Thanks again!
 
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maxalge

maxalge

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this is a known ryzen issue, see if there is a new mobo bios with fixes for ram speeds




some people are still stuck with lower than advertized ram speed to this day sadly

 
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InvalidError

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Titan
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Ryzen's memory controller is extremely picky when using dual-rank DIMMs and all four slots, there isn't much that can be done about that. Officially, Ryzen only supports 2133MT/s when using four double-sided DIMMs and 2666MT/s when using only one single-rank DIMM per channel. Many reviewers have had no luck getting their Ryzen samples to run memory any faster than 2933MT/s.
 
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iamacow

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Single-Sided memory vs Double-Sided. If you remove the heatsink all the memory chips are on one side (singe rank). or if they are on both sides (dual rank). 8GB memory sticks are usually Single these days and 16GB are dual. That doesn't mean some 8GB aren't dual, but the newest ones are not. All 16GB are however.

Ryzen, just like previous AMD systems has a horrible time with memory faster than stock. So anything over 2133 on 16GB sticks are not supported.

To add to the problem if you have four sticks that puts even more stress on the CPU memory controller and it most likely will never boot @ 3200 for Rzyen. A lot of people are able to get 2933, but it is the luck of the draw since the CPU is really the deciding factor.

I would just run it at lower speeds and tigher timmings. 2133@CL9 is the same as 2400@CL10 and faster than 3200@CL14
 
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InvalidError

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Titan
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The biggest benefit from running Ryzen at higher memory clocks is the corresponding increase in internal fabric bandwidth which is tied to the memory clock. In most cases, you don't gain much from going from 3200-16 to 3200-14 and would be better off spending the price difference elsewhere than top-end RAM.

Hopefully all of these issues will get sorted out or at least improved with either a die revision or Ryzen 2. Some have already been improved to some extent with BIOS/microcode updates, but I doubt those alone will be anywhere near enough to bring Ryzen's memory controller up to Intel's standards for memory compatibility and performance.
 
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InvalidError

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Titan
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The problem with specially tweaked DRAM is availability: until yields of DDR4 with the electrical characteristics that Ryzen likes (or AMD respins Ryzen to massively improve memory compatibility), your DRAM chip options are severely limited and Ryzen-certified higher speed DIMMs using those chips will remain rare as heck.
 
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jjjay999

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I've actually (finally) been finding some FlareX kits on newegg now but they're all only 16GB. No 32GB anywhere though on G. Skills' site it says they have 32 and 64 gb kits as well. Guess it's a matter of waiting until sellers get re-stocked. Hopefully that happens before my 30 days is up for RMA, so my PC isn't down for very long.

As for tweaking voltages, I'm okay with that. When I first turned everything on, I had to do that before it would even boot properly because the voltages were set way too low (iirc, 1.12V), a somewhat common problem with early motherboards/BIOS's. The thing is, my ram will not go above 2666 no matter what I set the voltages or timings at. I've made quite a lot of phone calls and basically it's not so much Ryzen chips being overly picky or any shit like that, it's more of a bios thing (ASUS said this themselves, AMD said this and G Skill said it), so hopefully more widespread RAM support will come in future BIOS revisions. But the reality is that right now, I don't want to wait for that. I really can't either for various reasons (one being the 30 day RMA limit), so if I have to return the RAM and wait on stable, reliable BIOS and/or better RAM support and/or availability of FlareX 32GB/3200 MHz, then well I guess it's time to use my ancient laptop lol. I've dug around and at least found that much out, so hopefully it'll help someone, I realize I've more or less answered my own questions. Just was looking for any gurus on this forum to have any knowledge or information, as this is my most trusted (and only forum I actually post on) community type forum. Thank you again everyone, if anyone gets any new info, or especially if you see a 32GB/3200 MHz FlareX kit, I'd REALLY appreciate it if you could post it! Thanks again!

 
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MeanMachine41

MeanMachine41

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This is what GSkill support had to say about their RAM on all Ryzen AM4 platforms.

Quote: "Unfortunately, we can only say that only Flare X and FORTIS will work on Ryzen platforms at the moment. Other memory kit series aren't guaranteed right now".
"We just asked engineering, and if you're looking to use Trident Z RGB on the AMD X370 chipset motherboards and Ryzen 7 series CPU, then you can consider one of the following":

F4-2400C15D-16GTZR
F4-2400C15Q-32GTZR
F4-3200C14D-16GTZR

"Please note that 3200MHz CL14 is only compatible with the 8GBx2 capacity configuration, and 8GBx4 is not recommended".

Those pundits that know, understand that this happens with all new platforms initially till Microcoding has been sorted to address new RAM. To suggest the platform is weak or buggy is crap.

I have Corsair Dominators at 3000Mhz and yes I had to Tweak my Bios as they would not play fair with the original Bios. ASUS have released a new Bios update for the Crosshair VI HERO (in fact there are several variations in the works) and many are now able to run 32GB at 3200MHz RAM now.
 
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jjjay999

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MeanMachine1, Thank you so much! They didn't tell me that 4x8/3200mhz won't work right now, they DID tell me that buying two sets of 2x8GB kits wouldn't work though. I appreciate learning that! What capacity (total) and capacity per module dominator are you using? I may look into that RAM also, but aren't they tall? I have an air cooler that just clears the vengeance LPX by about 1/4 inch. And I agree, about the pundits. :) Intel has had these same problems when they released an all new platform and all. Also, where did you find/hear about the new crosshair VI Hero BIOS update? The most up to date one I found is on their site and it's 1002, which I'm currently using and it's almost a month old. Or is that the bios you're referring to? Thanks again!

And to reiterate, I don't care what brand/model/line RAM it is as long as it's reliable, solid RAM that's reasonably (I don't mean cheap) priced. I just want 32GB/3200mhz at CLS between 14-16 is all. In fact I kinda prefer Corsair which is why I bought them initially, but again, there are many good, reputable RAM companies out there.
 
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InvalidError

InvalidError

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Microcode deals with how CPUs execute instructions. I doubt any microcode is actually involved in communications between the bus-facing side of the memory controller and the DRAM dies where I suspect most of Ryzen's memory compatibility issues come from.

If Ryzen's memory IO pins are anything like Xilinx or Altera FPGAs', there are dozens of pin parameters that need to be configured or trained for a memory interface to work properly. Since AMD is new to DDR4, I would not be too surprised if their first DDR4 controller happened to be missing some tweaking parameters, insufficient tweaking range or resolution, rendering the BIOS' search for a stable set of setup register value more difficult than it should be, if not impossible for a given CPU-MoBo-DIMM combination.
 
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MeanMachine41

MeanMachine41

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I always use Corsair Dominators however that's just my personal preference. GSKill are quality RAM too.
My RAM is Corsair DDR4 16GB (2x8GB) CMD16GX4M2B3000C15 atm I can only get them to my rated speed frequency with Bios Tweaks and trying different Timings and Voltages in conjunction with my CPU OC.

I am still on Bios 1002 because of issues relating to Beta versions. An update is in the pipeline. Give it a couple more weeks and the boys at ROG will have it sorted. Check my thread for info regarding testing this new platform and also check other threads regarding others experiences. https://rog.asus.com/forum/showthread.php?92489-New-Ryzen-7-1800X-build-impressions

The issue of height with your modules may be a problem with an Air cooler ofc depending on which one you use. I have an AIO liquid cooler so no probs.
 
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jjjay999

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Sigh. Still not all that stable. All it really did for me was let me OC to 4.05 instead of 4.0 stable. Still doesn't cold boot well, still won't run my RAM at the specified specs. Oh well. Here's hoping for the next update.
 
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MeanMachine41

MeanMachine41

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Well if you are unstable then it's Bios Tweaking time. I have stability with Bios updated to 1002.
Others are experiencing issues still with 1106 and the AGESA update to 1.0.0.4a
What are your cold boot issues.?
 
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jjjay999

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Locks, freezes, never gets past the BIOS SCREEN, restarts, or won't even boot to windows (it boots to bios) I had the same issues with 1002 and 0902. And scratch the +.05 OC, it was stable for a few stress tests and restarts, then became unstable. So basically they've solved nothing. ASUS is really disappointing me on this, and I've used and recommended their products for years now, considering there have been a few other mobo manufacturers that have had much better, much more stable BIOS's for weeks now. Still not perfect, but still much better than ASUS. You'd think their flagship Ryzen ROG mobo that's just as, or more expensive than every other companies' flagship mobo', that they'd have fixed some kinks and had it mostly stable by now. They're really kind of just sh***ing this one out.
 
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