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CAS timing not saving properly

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=5603
Printed Date: 19 May 2024 at 7:53am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: CAS timing not saving properly
Posted By: Drain_Bamaged
Subject: CAS timing not saving properly
Date Posted: 16 Jul 2017 at 12:56pm
" rel="nofollow - mobo: ASROCK x370 Killer SLI
CPU: 1600
RAM: Corsair Vengeance LPX ( CMK16GX4M2B3000C15 )

My CAS timing is settings its self to 16 regardless of XMP profile and manually setting it to 15. I notice this in BIOS as well as all software reads my CAS as 16 not 15.

Bug? Not cool : /



Replies:
Posted By: datonyb
Date Posted: 16 Jul 2017 at 8:46pm
no mine has done this since day one

cl15 always sets itself to cl16
yet remains displaying in bios i want cl15

mine is the taichi but sounds the same issue as you


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[url=https://valid.x86.fr/jpg250][/url]

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


Posted By: MisterJ
Date Posted: 16 Jul 2017 at 9:31pm
Drain_Bamaged, there is a BIOS setting -Advanced Boot Training- that is "training" the memory.  It may be the cause of this.  I suggest you disable this and see if it helps.  The results may be memory errors.  Enjoy, John.


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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


Posted By: Drain_Bamaged
Date Posted: 17 Jul 2017 at 1:20am
Thank you

Hope it gets fixed but it's been a few months so....I guess products working properly isn't a high priority.


Posted By: AlbinoRhino
Date Posted: 17 Jul 2017 at 4:04am
Originally posted by Drain_Bamaged Drain_Bamaged wrote:

Thank you

Hope it gets fixed but it's been a few months so....I guess products working properly isn't a high priority.


Intel struggled with the same issues when they moved to DDR4.

I do believe AMD should have spent more time on this before launch though.


Posted By: Jm62383
Date Posted: 17 Jul 2017 at 8:32am
I also had the same problem when I would set the cas to 15..not matter what speed I chose and disabled boot training it still defaulted to 16 when I exited the bios.


Posted By: Drain_Bamaged
Date Posted: 17 Jul 2017 at 8:34am
" rel="nofollow - Is Asrock aware of this? I wonder if we can expect a fix.


Posted By: datonyb
Date Posted: 17 Jul 2017 at 3:15pm
im feeling its more an issue with amd and there bios and or ryzen cpus

if i set cl 14 it stays there

it would seem ryzen platforms dont like un even cl numbers anyway


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[url=https://valid.x86.fr/jpg250][/url]

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


Posted By: Drain_Bamaged
Date Posted: 17 Jul 2017 at 3:33pm
Then maybe Corsair shouldn't be selling C15 RAM calling it Ryzen ready. Not only that but my RAM is on AMDs list of compatible RAM. A lot of folks screwing up on this.


Posted By: datonyb
Date Posted: 17 Jul 2017 at 4:39pm
my ram is gskill cl 15

yet it still selects itself to run 16/15/15/15 timings
i try not to lose sleep over it Smile

compared to an older asus setup i have here
im just glad it runs its proper max ram speed and close-ish timings
the other system wont run 1866  HYPERX ddr3, even at 1333 with recommended timings
(i have to loosen timings  just to get 1333)


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[url=https://valid.x86.fr/jpg250][/url]

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


Posted By: ShampooCA
Date Posted: 19 Jul 2017 at 10:10pm
If I recall correctly it's a Ryzen thing.  

Not the end of the world really, but I see your point.

Someone suggested disabling memory training, I haven't tried that yet, but with memory training off, the system posts much quicker.



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