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finally making progress RAM SPEED

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datonyb View Drop Down
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    Posted: 07 Oct 2017 at 9:18pm
as some of you know i was quite lucky from very early days with plug n play 3200 ram on my taichi
using the tridentz 3200cl15 8 gig sticks
alas due to ryzen/amd issues it has always ran at 3200 cl16/15/15/15/35/50 1t

each and every bios release since v1.5 i have tried to get at least cl14 timings out of this kit
(something which is easy peasy on intel boards)

i have been able to get it stable many times at cl14/3200 BUT NEVER the dam cold start up boot

eg i can save exit bios and go into windows ,but if i switch it off overnight then i get the beep beep cycle of death next day, and have to suffer the total reset of bios defaults

well now im typing this at 3466mhz cl14/14/14/14/28/42 1TClap
and it cold boots Beer

after mucho reading ,screenshots, and bios playing
things i had to adjust >

amd boot training turned to ON/AUTO
soc volts 1.1
ram volts 1.395
CPU VOLTS 1.35 (YES IT SEEMS THE CPU VOLTS DO MAKE A DIFFERENCE)
geardown mode = enabled  (despite advice from two very good gurus *stilt* and *chew* my board WILL NOT COLD BOOT with geardown off which is normal advice to have it off )
bankgroup swap = off
bankgroup swap alt = on

i will have to work over the next few days to see how much and what voltages i can turn down now

as well as getting the main subtimings better eg cl15 etc i have massively reduced some other lesser known subtimngs eg trfc etc

and have seen quite a good increase in ram performance

im waiting hopefully for one of the mods to assist me with a program to display ram timings in ryzen so guys can see exactly what settings to try and follow etc
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 07 Oct 2017 at 10:42pm
ok update
3466 isnt totally stable (eventually crashed)
trying same subtimings on 3333 now
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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wardog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 07 Oct 2017 at 11:58pm

I'm confused by your going up in speed over their rated 3200 yet lowering the timings. Counterproductive. This IS Ryzen afterall. Yet, I'll play along......


Try these

Clear the BIOS (ALWAYS clear when making mem changes. Swapping sticks or a single timing change)
Set 'em using XMP to set the sub-timings of them
Make these changes 14-14-14-33-46 1T(then if 1T fails attempt 2T)

First try those at 3333, then 3466.

Should, should, run 3466
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 2017 at 12:07am
And I don't ever want to hear you mention again how expensive and snooty high class MY 4133 TridentZ's are.

https://www.dailydeals.io/products/gskill-tridentz-series-16gb-2-x-8gb-288-pin-ddr4-sdram-ddr4-3200-pc4-25600-desktop-memory-model-f4-3200c15d-16gtz-new


Tongue




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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 2017 at 1:06am
Originally posted by wardog wardog wrote:


I'm confused by your going up in speed over their rated 3200 yet lowering the timings. Counterproductive. This IS Ryzen afterall. Yet, I'll play along......


Try these

Clear the BIOS (ALWAYS clear when making mem changes. Swapping sticks or a single timing change)
Set 'em using XMP to set the sub-timings of them
Make these changes 14-14-14-33-46 1T(then if 1T fails attempt 2T)

First try those at 3333, then 3466.

Should, should, run 3466


well let me explain
my sticks are cl15 3200 described as middle ground samsung b dies

stilt and chew both get faster speeds and lower timings on these lower binned ic's
(hence why ive aimed high and increased speed AND lowered timings)

ive got much further today as what seems to be the issue holding me back was the geardown mode and cold boots even at 3200 cl14

3466 at first posted timings was a bit of a no-go had game crashes (windows fine just game crash)

and in 4 hrs also had two crashes in games not windows at 3333

it would seem my sticks and imc are not that happy with the tighter set of timings

i will have to try safer 3200 cl14 settings
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 2017 at 1:08am
Originally posted by wardog wardog wrote:

And I don't ever want to hear you mention again how expensive and snooty high class MY 4133 TridentZ's are.

https://www.dailydeals.io/products/gskill-tridentz-series-16gb-2-x-8gb-288-pin-ddr4-sdram-ddr4-3200-pc4-25600-desktop-memory-model-f4-3200c15d-16gtz-new


Tongue






hey those are my exact ram sticks/kit

mine were a little bit less 瞿158  samish amount in $$$$$
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2017 at 6:01am
a small update
tried running advised timings of 14/14/14/14/33/46  still had some game crashes at 3333

dropped the mhz down to 3200 and 14/14/14/14/35/50 and its been rock solid all afternoon and evening

it may seem a combination of the low end b dies and my not so lottery win cpu imc

im happy now anyway as my stock cl15 timings defaulkted to cas 16

so its a good improvement

i will see how it goes and maybe try to bump it to 3333 if this remains stable over the week
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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parsec View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2017 at 10:40am
I'm curious if you have a CPU OC with your memory OC. I use 1.35V for my 3.9GHz OC (which barely qualifies as an OC IMO) with a 1700X.

I used stilt's Samsung B-die secondary and tertiary memory settings with my FlareX 3200, and it helped to get it to run at 3200, which was never a given on my Ryzen PC. Manually setting Proc ODT seemed to help too, which I imagine you've done already. I've been fascinated with Proc ODT lately, which I have set to, IIRC, 60 Ohms. What is your's set to, for my Proc ODT knowledge base? I hate that we don't know what the Auto setting actually is, and there are no specs about it. My newer Intel chipset boards have several ODT options, which never get set to anything but Auto, since there is not much information about it available.

AMD said that for any memory OC (above 2667), the Auto setting for Gear Down Mode is enabled, so 2T. They also said it is easier to OC your memory with Gear Down Mode enabled. We won't see the Command Rate set to 2T, if it is set to 1T, but Gear Down Mode changes it internally. As you said, the usual notion is Ryzen prefers 1T, which is the XMP value for my FlareX 3200.

Your timings are almost identical to the XMP timings of my FlareX, 14 14 14 14 34 48. In the past, I had the occasional cold boot problem with the FlareX, but I haven't had that happen for a while now. I also have AM4 Boot Training disabled.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2017 at 12:29pm
I've posted this before. Some Old Skool Memory stuff.

Signal Noise Management with On-Die Termination (ODT)
https://www.bit-tech.net/reviews/tech/memory/the_secrets_of_pc_memory_part_3/8/


Note also, SPDTool, on the page.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 09 Oct 2017 at 12:47pm
Amen for backups..........

JEDEC Standard for DDR4; Updated June 2017
http://www86.zippyshare.com/v/RRs1TYuU/file.html

ODT section begins on pg 161

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