Date: Thu, 20 Jul 2017 07:38:19 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen... Message-ID: <bug-219399-8-XuLyE6WdfO@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-219399-8@https.bugs.freebsd.org/bugzilla/> References: <bug-219399-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D219399 --- Comment #72 from SF <shitman71@hotmail.com> --- Dear , Your service request : SR #{ticketno:[]} has been reviewed and updated. Response and Service Request History: Thank you for the email and feedback.=20 Higher memory frequencies on Ryzen can require a higher CPU voltage to ensu= re full stability, so this would be expected once you start overclocking the memory above 2667Mhz default values.=20 If your system requires these settings to be stable when using speeds of 2667Mhz or lower, i recommend sharing your experiences with the Motherboard manufacturer, as you could have a faulty Motherboard or there could be a bu= g in the Motherboard bios that would need to be addressed.=20 We have not received any similar reports of the issues you have described, however we will stay vigilant to see if there are more reports of similar issues from other customers.=20 With regards to memory, memory frequency up to 4000Mhz has been unlocked so that Motherboard manufacturers may test and validate higher speed memory configurations on their Motherboards. Furthermore, it allows customers who = like to overclock and tune their systems the possibility to extract extra performance by running their memory at a higher frequency than was previous= ly possible.=20 Unfortunately overclocking memory can be extremely complicated and many different factors are involved and so there is no guarantee that you will be able to run your memory frequency any higher than the default (2667Mhz or lower) supported values. Due to the above, Motherboard vendors test various memory types and configurations and certify them on a Qualified Vendor List (QVL) for each Motherboard they manufacturer. I checked your Motherboard and found that Gigabyte have not validated any memory to run at speeds above 3200Mhz using= two or more DIMMS.=20 As per the QVL, the memory you are using has not been certified to run at 3600Mhz/3466Mhz speed with a Ryzen processor. If you are unhappy with this,= i suggest contacting the Motherboard manufacturer. AMD does not guarantee mem= ory will run at any higher than 2667Mhz.=20 You can download the QVL for your Motherboard at the following link > https://www.asus.com/uk/Motherboards/PRIME-B350-PLUS/HelpDesk_QVL/ Please refer to our gaming blog where this limitation regarding memory is called out specifically.=20 For speed grades greater than DDR4-2667, please refer to a motherboard vend= or=E2=80=99s memory QVL list. Each motherboard vendor tests specific speeds, modules, and capacities for their motherboards, and can help you find a memory pairing t= hat works well. It is important you stick to this list for the best and most reliable results. DDR4 Speed (MT/s) Memory Ranks DIMM Quantities 2667 Single 2 2400 Dual 2 2133 Single 4 1866 Dual 4 https://community.amd.com/community/gaming/blog/2017/03/14/tips-for-buildin= g-a-better-amd-ryzen-system Thank you for contacting AMD.=20 Please be advised that this service request will be permanently closed if y= ou do not reply within 10 days. If more time is needed to respond to my e-mail above, please let me know and I will ensure that this service request remai= ns open for you. In order to update this service request, please respond, leaving the service request reference intact. Best regards, AMD Global Customer Care --=20 You are receiving this mail because: You are the assignee for the bug.=
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