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AMD response to AGESA/BIOS query.
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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: 17 Oct 2017 at 10:59pm
I have asked about 128GB, datonyb.  We are trying to set up a phone conversation and I hopefully will ask many useful questions.  Thanks and 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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Originally posted by MisterJ MisterJ wrote:

Here are a couple of pictures AMD support sent with the latest reply:

https://imgur.com/gLgCo7e

https://imgur.com/MUrhRcl


Enjoy, John.



tell the smart ass to send you a picture with 8 16gb dimms then installed and working

we already know 64 gb can be sorted

(i do presume without a doubt you have asked about the 128gb issue )
[url=https://valid.x86.fr/jpg250][/url]

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JUANNY View Drop Down
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Originally posted by MisterJ MisterJ wrote:

SoniC, I agree,  Double Sided (probably required for 16 GB sticks) and 8 sticks will, in effect, create quad rank memory load on the buss.  I would suspect it may not make 2133 MHz.

JUANNY, did you see this in the AMD response:
Quote Our guidance for memory compatibility for Ryzen Threadripper when populating 2 DIMMs per channel, in all four channels, is to support DDR4-2133 speeds
They are following their own guidance.  As I suggested before, if you want to go faster and max GBs, you may need to wait.

I just noticed in the HW picture that the 4-pin CPU power connector is vacant - interesting.
Enjoy, John.


Ya I know that is their guidance but I could imagine that they would try harder to not bog down their flagship platform with such low speed ram unless it was technically not possible to support higher speeds.
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MisterJ View Drop Down
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SoniC, I agree,  Double Sided (probably required for 16 GB sticks) and 8 sticks will, in effect, create quad rank memory load on the buss.  I would suspect it may not make 2133 MHz.

JUANNY, did you see this in the AMD response:
Quote Our guidance for memory compatibility for Ryzen Threadripper when populating 2 DIMMs per channel, in all four channels, is to support DDR4-2133 speeds
They are following their own guidance.  As I suggested before, if you want to go faster and max GBs, you may need to wait.

I just noticed in the HW picture that the 4-pin CPU power connector is vacant - interesting.
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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JUANNY View Drop Down
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Originally posted by SoniC SoniC wrote:

I assume these were all SS memory sticks.... and yeah... 64GB... where this platform should support 128GB max.... 
I have 4x 16GB DS and on X399 I'm reaching 90% of what they can on a X370 platform (2933 vs 3200).
It's definitely not what premium (or "pre-selected RyZEN modules") feels like LOLConfused

...ohwell... 


Why are the dimms running at 2133? Haha feels like buying a Mercedes then putting 20 dollar tires on it no pun intended.
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SoniC View Drop Down
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I assume these were all SS memory sticks.... and yeah... 64GB... where this platform should support 128GB max.... 
I have 4x 16GB DS and on X399 I'm reaching 90% of what they can on a X370 platform (2933 vs 3200).
It's definitely not what premium (or "pre-selected RyZEN modules") feels like LOLConfused

...ohwell... 
-=SoniC=-
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MisterJ View Drop Down
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Here are a couple of pictures AMD support sent with the latest reply:

https://imgur.com/gLgCo7e

https://imgur.com/MUrhRcl


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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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: 14 Oct 2017 at 2:47am
datonyb, I would interpret it as saying use 8 sticks (single or double rank was not specified) with 2133MHz SPD or the user owns any difficulty.  If they really publish the information I suggested (lots of work), we should see the effect of rank and other parameters.  In my response I asked about my specific case - 4x8 GB.  Perhaps users should open a ticket for their proposed configuration.  I got no feel for initialization.  Thanks and 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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reading inbetween the lines and making educated assumptions

is it in fact a better option to select ram with the jedec 2133 base/default

than to select ram with jedec 2400/2666 minimum ??

or in other words is this problem with 8 sticks 128gb limited to jedec minimum sticks carrying 2400/2666 and therefore the bios cant start to initialise ?
[url=https://valid.x86.fr/jpg250][/url]

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MisterJ View Drop Down
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Here is the latest response - much better!
Quote

We appreciate your patience as we continue to work with our motherboard partners to deliver improved memory reliability and compatibility for the SocketTR4 platform.  When platform improvements are available we will publish them on our AMD community blogs, as we have done for Ryzen in the past.  


Regarding AGESA versions, there is not a shared code base between the AM4 platform and the SocketTR4 platform, i.e. Threadripper AGESA is not the same as Ryzen AGESA.


Our guidance for memory compatibility for Ryzen Threadripper when populating 2 DIMMs per channel, in all four channels, is to support DDR4-2133 speeds (for reference please see the attached picture).  Speeds above that are achieved through overclocking, where manually tuning memory timing and voltages may be required to maintain stability.

I suggested AMD publish a list for various memory configurations with supported speed/latency.  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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