From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id F0B3E15864F for ; Mon, 27 Mar 2023 13:45:16 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 92D3FE08FB; Mon, 27 Mar 2023 13:45:11 +0000 (UTC) Received: from smarthost01c.ixn.mail.zen.net.uk (smarthost01c.ixn.mail.zen.net.uk [212.23.1.22]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 5A061E08D3 for ; Mon, 27 Mar 2023 13:45:11 +0000 (UTC) Received: from [82.69.80.10] (helo=wstn.localnet) by smarthost01c.ixn.mail.zen.net.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pgn9p-0007R2-VG for gentoo-user@lists.gentoo.org; Mon, 27 Mar 2023 13:45:10 +0000 From: Peter Humphrey To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] PCIe x1 or PCIe x4 SATA controller card Date: Mon, 27 Mar 2023 14:45:09 +0100 Message-ID: <3219755.aeNJFYEL58@wstn> In-Reply-To: References: <57322874-e9c0-2f2c-8994-43438fe72995@gmail.com> <5d324904-4d4d-a02c-4a8a-cd985b170df6@gmail.com> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Originating-smarthost01c-IP: [82.69.80.10] Feedback-ID: 82.69.80.10 X-Archives-Salt: 90c4117c-4107-4b5e-b60f-c4b6c0ee99dc X-Archives-Hash: e0590fbcad933ab8b3837b5861ff4bc1 On Monday, 27 March 2023 11:37:17 BST Frank Steinmetzger wrote: > Compiles will speed up no matter what CPU you choose. But where else do you > need compute power? Video transcodes can be done in the background, and > there is also a limit to what parallelisation can achieve. Encryption is > also a non-issue for you. Even my 10 year old i3 in the NAS can encrypt over > 1 GB per second, IIRC. Another heavy-load case is BOINC projects [1], which load all CPU threads, or a proportion of them, with floating-point calculations. I run 24 threads continuously on this Ryzen 9 and 9 threads on the older I7, except during Gentoo updates. I haven't looked into CPU comparisons for this kind of load, preferring to rely on workstations from a known high-performance system builder [2]. 1. https://boinc.berkeley.edu/ - the Berkeley Open Infrastructure for Network Computing. 2. https://armari.com/ . They specialise in systems for financial trading in the City of London, where (I'm told) milliseconds count, as well as reliability of course. -- Regards, Peter.