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x399 Memory Issues
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rockstarbill View Drop Down
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    Posted: 08 Feb 2018 at 6:28am
Hello all,

Just built a system with a 16 core Thread Ripper and the x399 Taichi motherboard. All works well, except for my memory. It will not boot unless I have it set to Auto, and when it is, it runs at 2133 vs the 3200 the memory is spec'd for.

The memory kit (4x16GB) is:

Corsair CMR64GX4M4C3200C16 VENGEANCE RGB 64GB DDR4 3200 (PC4-25600) C16 Desktop Memory

I get that the XMP Profile is for Intel Chips and likely will not work with my AMD chip, but is there anything I can do to get the memory to run at 3200?

Thanks in advance
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antorsae View Drop Down
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Points: 36 		Post Options Post Options   Thanks (1) Thanks(1)   Quote antorsae Quote  Post ReplyReply Direct Link To This Post Posted: 08 Feb 2018 at 7:33pm
I too have the same issue. Have 64 Gb on 4 slots and cannot get 3200 stable w/ 2 x 1080 Tis. It's funny but memtest works ok both 3200 and 2133 but when I do 3200 I get PCIe errors after few hours (or days) of intense number crunching (GPU-side, deep learning).

Memory on AMD processors is still a mess.
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datonyb View Drop Down
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Points: 3139 		Post Options Post Options   Thanks (1) Thanks(1)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2018 at 2:35am
Originally posted by rockstarbill rockstarbill wrote:

Hello all,

Just built a system with a 16 core Thread Ripper and the x399 Taichi motherboard. All works well, except for my memory. It will not boot unless I have it set to Auto, and when it is, it runs at 2133 vs the 3200 the memory is spec'd for.

The memory kit (4x16GB) is:

Corsair CMR64GX4M4C3200C16 VENGEANCE RGB 64GB DDR4 3200 (PC4-25600) C16 Desktop Memory

I get that the XMP Profile is for Intel Chips and likely will not work with my AMD chip, but is there anything I can do to get the memory to run at 3200?

Thanks in advance


ryzen dram calculator
written by 1usmus

it has settings to work with the threadripper as well
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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ssateneth View Drop Down
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Points: 114 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ssateneth Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2018 at 3:17am
Hi. Official DDR4 speed support on X399 in your setup is 2400MHz (Dual rank, 1 DIMM per channel). Anything higher than that is overclocking and not guaranteed. If you get 2400MHz then there is no problem with your setup. If you want faster speeds, I recommend visiting an overclocking forums. But as this is a technical support for and not an overclocking forum, you should expect support that is within technical specifications put in effect by the manufacturers.

https://techreport.com/review/32474/the-tech-report-system-guide-september-2017-edition/4

"Ryzen Threadripper CPUs are subject to similar limitations, just with four memory channels instead of two:
  • Quad-channel, dual-rank, two DIMMs per channel: DDR4-1866
  • Quad-channel, single-rank, two DIMMs per channel: DDR4-2133
  • Quad-channel, dual-rank, one DIMM per channel: DDR4-2400
  • Quad-channel, single-rank, one DIMM per channel: DDR4-2667
"





Edited by ssateneth - 12 Feb 2018 at 3:19am
MB: X399 Taichi, UEFI L3.32
VGA: EVGA 1080 Ti FTW3
PSU: Seasonic PRIME 1300 W PLATINUM
CPU: AMD Ryzen Threadripper 2950X
MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW
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MisterJ View Drop Down
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Points: 1097 		Post Options Post Options   Thanks (1) Thanks(1)   Quote MisterJ Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2018 at 5:02am
ssatenth, what makes this "Official".  It is not from AMD and it is months old after several new BIOS and AGESA releases.  If anyone wants "Official" information, they should open an "Official" AMD Technical Support ticket and ask them for up-to-date information.  This is old and certainty not "Official".  Enjoy, John.
Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD
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antorsae View Drop Down
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Points: 36 		Post Options Post Options   Thanks (0) Thanks(0)   Quote antorsae Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2018 at 2:42am
I finally managed to get (so far stable) 3333 Mhz on my TR1950X w/ Linux + Windows. 

I used the memory calculator suggested in this forum and entered values on the UEFI part next to the PCIe stuff/etc where you have to enter values in hexadecimal (not on the OC Tweaker Mem settings). 
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ssateneth View Drop Down
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Points: 114 		Post Options Post Options   Thanks (1) Thanks(1)   Quote ssateneth Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2018 at 12:30am
Originally posted by MisterJ MisterJ wrote:

ssatenth, what makes this "Official".  It is not from AMD and it is months old after several new BIOS and AGESA releases.  If anyone wants "Official" information, they should open an "Official" AMD Technical Support ticket and ask them for up-to-date information.  This is old and certainty not "Official".  Enjoy, John.

Ok, let me try this another way. You want info directly from AMD? Here is info directly from AMD.
MB: X399 Taichi, UEFI L3.32
VGA: EVGA 1080 Ti FTW3
PSU: Seasonic PRIME 1300 W PLATINUM
CPU: AMD Ryzen Threadripper 2950X
MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW
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datonyb View Drop Down
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Points: 3139 		Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2018 at 3:06am
good news then

i hope it remains nice and stable for you mate
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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MisterJ View Drop Down
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Points: 1097 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MisterJ Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 2018 at 4:24am
Thanks, ssatenth.  I stand by my post.  There is nothing here that says 2667 MHz is the absolute maximum for TR.  It may be for this system, I doubt it, but there are many running faster memory speeds including me.  AMD technical support may well have a different response and this my be an old result.  Enjoy, John.
Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD
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datonyb View Drop Down
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Points: 3139 		Post Options Post Options   Thanks (1) Thanks(1)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2018 at 3:11am
guys confusion here i think is the difference between

absolute max memory speed
and
maximum supported speed
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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