From owner-freebsd-stable@freebsd.org Wed Jan 24 12:24:56 2018 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 85AEDED16FF for ; Wed, 24 Jan 2018 12:24:56 +0000 (UTC) (envelope-from michaelp@bsquare.com) Received: from NAM01-BN3-obe.outbound.protection.outlook.com (mail-bn3nam01on0111.outbound.protection.outlook.com [104.47.33.111]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "Microsoft IT TLS CA 4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F044F87079 for ; Wed, 24 Jan 2018 12:24:55 +0000 (UTC) (envelope-from michaelp@bsquare.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=BsquareO365.onmicrosoft.com; s=selector1-bsquare-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=oH5s32Yi0Kx7uHjo/tfdJgyt1dYYO/bp99hMT5bEHnQ=; b=PArrOsOzM2iq7SRXj02bCOxbBwVuReGbYZWf+8FqpKTT2LdoFHCyuUBTzWuFdNpw6VSnq/OlPJHZ6boJwywVHOtEeR6v86mI4AtqXFFFqVBh0qppA28yrHE7rJWHkoFV2ifirC+T4Yr5pM1Da5Shrni+qNOHkbpx43B/qfsuIdI= Received: from [10.150.16.65] (82.33.218.74) by CY4PR1301MB2021.namprd13.prod.outlook.com (10.171.223.155) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.444.5; Wed, 24 Jan 2018 12:24:54 +0000 Subject: Re: Ryzen issues on FreeBSD ? To: freebsd-stable@freebsd.org References: <8e842dec-ade7-37d1-6bd8-856ea1a827ca@sentex.net> <3b625072-dfb3-6b4f-494d-7fe1b2fa554c@ingresso.co.uk> <2c6ce4dd-f43c-7c40-abc2-732d6f8996ec@sentex.net> <795dbb79-3c18-d967-98b9-5d09a740dbfe@sentex.net> <9b769e4e-b098-b294-0bce-8bb1c42e8a59@rootautomation.com> <508a8c83-a449-3c5d-c3bf-b308d91c80c0@bsquare.com> From: Mike Pumford Message-ID: Date: Wed, 24 Jan 2018 12:24:48 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 8bit X-Originating-IP: [82.33.218.74] X-ClientProxiedBy: DB6PR07CA0173.eurprd07.prod.outlook.com (10.166.153.155) To CY4PR1301MB2021.namprd13.prod.outlook.com (10.171.223.155) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: be9522da-4a23-463a-d997-08d563257995 X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020095)(4652020)(7021125)(4534165)(7022125)(4603075)(4627221)(201702281549075)(7048125)(7024125)(7027125)(7028125)(7023125)(5600026)(4604075)(2017052603307)(7153060)(7193020); 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They default to the standard RAM profile (slower than what it is sold as) and you have to explicitly enable the faster profiles (which do also come from data read from RAM). So it seems like your BIOS vendor is picking the faster profile as a default. I've got a couple of intel systems like this (one windows and one BSD) and neither ran stable with the faster RAM profiles. From what I read at the time 2133 is the official upper limit of the DDR4 standard. Any speed faster than that is an overclock profile. Mike -- Mike Pumford | Senior Software Engineer T: +44 (0) 1225 710635 BSQUARE - The business of IoT www.bsquare.com