Threadripper and Memory.

[Vince]

@andy_taximan

Hi Mate, I got your trust but for whatever reason the email attached to it doesn't work and for some reason I also can't start a PM convo with you so instead see my response below:

I have 3466 (8 sticks of G.Skill Trident Z B-Die) on a Taichi board it can do 3200 cas 14 but no more fully populated, if I remove 4 sticks then 3600+ seems to be pretty easy. On the X399 Prime I can only do 2933. The trick I found was to push voltage to the SOC where the memory controller is. I think in the bios that should be vddcr soc voltage and is set to .8v stock. Basically I push that towards 1v and set LLC at level 2 or 3. After that I manually set the clock frequency of the memory with really slack timings like cas 20 to get it into windows. From there its all about slight voltage adjustments and stability testing between reboots to tighten up the timings.

 

[Vince]

Not blaming the memory, I wonder if its the Zenith Extreme Alpha MB , dont think I can just change the Threadripper , can I ? Not really got another £1600 to spare

Could be the motherboard, as I said above literally nothing I could do would let me get above 2933 on the Asus Prime that I had to use for a while for ESXi as soon as I put the Taichi back in I was instantly back at 3200 no problem. Have you tried backing the timings right off setting the soc and frequency and seeing what happens? As you say its not like you can keep buying £1600 cpu's until you get one with a strong IMC.

 

[Vince]

Ive no idea what your saying other then ive upped the cpu soc from 1.035v to 1.1v yet to try upping the memory again, will try soon , Anybody want to buy a 2990wx with possibly a weak IMC ? lol going beep...beep.beep

For what it's worth I cant get much faster than this with my memory (all 8 dimms populated) @8pack probably wouldn't be all that impressed but I was surprised it could do it at all given the rated frequency with all dimms populated is 2133 on the 1st gen TR parts. Mine also boost to around 4.25 with OC Mode turned on in the Taichi bios but I don't like how many volts the board throws at the chip so have settled for a less aggressive voltage which results in 3.7 base 4.15 boost, I did this for another thread on quad channel memory performance but will shove it in here as well:



Default soc voltage on my chip is 0.9 but it's a 1st gen, so I up that to 1v I then upped memory and cpu load lines to level 3 in the bios and left the memory at 1.35v. I don't know if these timing can go or could be tighter with my memory, I guess it probably could but i'm not really a pro when it comes to the finer points of memory tuning.

 

[Vince]

Heres mine, I need to get somebody to look at my system, spent far too long trying to get it right

Its surprising how much better Zen+ is over Zen on memory and latency, even at the slower command rate and frequency yours it giving good numbers. I'll try and have a look through your boards manual and see if I can tell you exactly what to change to see if we can get kicking at higher ram speeds. I find with my chip its incredibly easy to get the ram at almost any speed and boot. What was not so easy was getting it perfectly stable.

Edit: Cant find any good pics of all the bios settings in the extreme tweaker menu of the bios. can you get some pics? Specifically some with dram timing control and other menus expanded.

 

[Vince]

Ha tried that so many times, nope I want back to bios 0405 , its not perfect but at least it lets you run memory at the right settings without bleeping at you and resetting the timings back to 2400

Damn board. Funny as the bios on the 399 prime was total junk and memory was impossible to fiddle with. My favourite 399 board by a long shot now esxi stuff is fixed has to be the taichi. I recon though that with the right bios tweaks to manual oc mode, setting ram agencies manually, voltages with a 100mv offset etc will get all of the sticks running stable.

 

[Vince]

Did you watch the youtube video i did? till the end with them damn bleeps and then having it reset back to 2800 ? None of that with the old bios, dial it in and it stays in. Tho windows blue screens at the highest settings its ok at 3000, ill have to have a fiddle with it when i get time.

I did! reminds me a lot of trying to get my ram to 3466 (its xmp settings) on just about any board with 8 sticks. With mine if I just want to not touch a lot and be stable 2933 xmp works without any extra tweaking so no load line or anything just xmp. Above that and more juice is required.

 

[Vince]

Thank you for contacting ASUS support. My name is Arsen.

Unfortunately this seems like compatibility issue with the RAM you are using. Please check the part number for the RAM in the QVL list below :

https://dlcdnets.asus.com/pub/ASUS/...98.409391260.1563794273-2047593431.1521203834

If possible test the board with a different set of RAM.

We would also advise you to make a CMOS reset of the BIOS by taking out the CMOS battery for 3-5 minutes while the PSU is unplugged. While the power cord from the PSU is still unplugged, press the power button down for 30 seconds to power discharge the unit. Then place the CMOS battery back in, plug in the PSU and try again.

After this go into the BIOS > Advanced Menu > APM Configuration, from here set the ERP Ready to Enable S4 + S5 or Enabled S5 and set the Restore AC Power Loss to Last State and test the motherboard again.

If you need any further assistance, please do not hesitate to contact us as we are always here to help.

Hope 8pack gets to see this , total rollocks of course, and this is Asus support! o dear. Not going to try and muck my pc up with that bios thing.

If you wanted I could send you half of my ram 32gb gskill b-die 3466 and you could at least test if it is a ram issue. Are you running all 8 sticks or 4? I have 2 32gb quad channel kits and so long as you send it back id be happy for you to have a go. The truth is though I think there is nothing wrong with the ram

Did you really expect asus generic support to give any good info at all?