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Thread: ASUS PRIME X470-PRO (Issues and Successes) Reply to Thread
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  Topic Review (Newest First)
06-16-2019 09:41 AM
KR0SSED0UT Been having an issue with this board that I've been unable to diagnose/fix for months now, maybe someone else here will have had the same...

Basically, whatever is in my M.2_2 slot randomly disconnects/freezes. It usually happens when I'm running something demanding (in my case, Battlefield V). I've tried both a 660p (NVME) and an SU800 (SATA) and they both do the exact same thing. Anyone else experienced this? It's a really strange issue but it's happened across multiple drives so I know it's not that. It's annoying to the point where I'm just going to switch brands and get an x570 board when they come out, and RMA this board and sell it. I have the latest BIOS, (4804) the latest windows build (1903) and all the latest drivers I can find.

So... anyone else?
06-13-2019 01:41 AM
vitgar83
Quote: Originally Posted by malakudi View Post
My issue with 4804 is that on boot, before the ASUS logo is shown, I see for 1-2 seconds an empty screen with a cursor in upper lefter corner. This hasn't happened before with any BIOS version.
I have too the black screen with underscore already with the previous bios.
06-11-2019 04:51 AM
MishelLngelo Anybody using Macrium Reflect with 4804 BIOS ? I can't get MR rescue USB or RE to run. Boots but locks up computer right after it BOOTs. Picture is there but nothing reacts.
06-09-2019 02:53 AM
Reous Hey malakudi,
Asus is already informed about this issue and the ACPI problem. We are waiting for a fix now. So far i know this problem exists since first ComboAM4 Bios.



Haven't heard something about your second problem so far. At least not on Windows based systems.
06-09-2019 12:03 AM
malakudi
Quote: Originally Posted by Reous View Post
Bios 4804
https://dlcdnets.asus.com/pub/ASUS/m...-ASUS-4804.zip


Update AGESA to ComboAM4 1.0.0.1 for the upcoming processors.
Please notice that this version of BIOS can only be updated via EZ Flash.


Haven't tested it now.
Hi Reous, I have seen in hardwareluxx that you talk about an issue with 4804 and sensors after standby or after running for some time. Just wanted to let you know that this issue doesn't exist under Linux (it87 kernel driver). The difference over previous versions is that now the memory address for it87 sensors is claimed from ACPI BIOS, so in Linux we need to load the driver with option "ignore_resource_conflict" - which as stated by the driver author "This is inherently risky since it means that both ACPI and this driver may access the chip at the same time. This can result in race conditions and, worst case, result in unexpected system reboots." So maybe someone needs to mention to ASUS to exclude again this address from ACPI tables.

My issue with 4804 is that on boot, before the ASUS logo is shown, I see for 1-2 seconds an empty screen with a cursor in upper lefter corner. This hasn't happened before with any BIOS version.
06-07-2019 08:28 PM
Handrox
Quote: Originally Posted by umeng2002 View Post
Mmm... Good to know. Right now at 3333 my latency is 60ns... I might try higher speeds with loser timings and see of the latency increases...
The lowest latency I got was something around 56ns, using the RAM 3666MHz [email protected] in a benchmark round. After that I saw that achieving latency below 60ns in a stable way is very costly and not worth for day to day, and that the difference in performance is insignificant.
06-07-2019 05:28 PM
umeng2002 Mmm... Good to know. Right now at 3333 my latency is 60ns... I might try higher speeds with loser timings and see of the latency increases...
06-07-2019 10:39 AM
Handrox
Quote: Originally Posted by umeng2002 View Post
Thanks for the info.

Do you think it would be worth it run at CL15 or CL16 for 3400 or higher? Technically the latency is worth that CL14 at 3333.
I think latency in Zen + is 60ns, trying to go below that is very costly. I preferred to keep the highest transfer rates possible within those 60ns. I was lucky in the RAM modules and Zen and Zen + CPUs that I could use because in all of them I managed without much difficulty 3466MHz CL14 to 3600MHz CL14. My first boot in an Asrock B350 Fatality was with 1700X and 3600MHz CL16 RAM, I installed every system so of course when I went to do high load tasks the system disarmed and had to reduce to 3466MHz.
06-07-2019 01:51 AM
MishelLngelo I like to have everything running at best efficiency and it's good (as in doesn't hurt) to have as fast memory with lowest possible Cl but Cl is not making much difference in overall performance, not enough to sacrifice stability, cause need for higher voltage or having to work hard just for it. There are some applications that can make use of lower Cl and some that do not. Cl16 to Cl14 for instance, would show only in memory benchmarks, so other than that, hardly worth the effort.
06-06-2019 10:29 PM
umeng2002
Quote: Originally Posted by MishelLngelo View Post
M kingston 3600 is rated at Cl18 at that frequency according to it's XMP yet works at Cl16 in 4602 BIOS. Although it's b-die, any attempts to lower CL have not been successful. I will flash 4804 shortly and see what happens.
Quote: Originally Posted by Handrox View Post
I'm using exactly this setting. Only the SCL is 2 well place of 3.
Thanks for the info.

Do you think it would be worth it run at CL15 or CL16 for 3400 or higher? Technically the latency is worth that CL14 at 3333.
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