Date: Sun, 27 Jun 2021 15:45:29 +0200 From: Stefan Esser <se@freebsd.org> To: Robert Huff <roberthuff@rcn.com> Cc: questions@freebsd.org, x11@freebsd.org Subject: Re: Old NVIDIA card, new FreeBSD = failure? Message-ID: <85b5b9b3-ad93-e8ac-2e86-b2f277ed7753@freebsd.org> In-Reply-To: <24792.26420.394563.785764@jerusalem.litteratus.org> References: <uZ6VybGvR6ddjj1CVAd0CMNpgvfbc65oLMD5y8r7OPur5j7flNkWuLoxJAueOHkyAJoOW68fE1zpTrvk18VPxSU3drao03Lv0n8UM6ge3y0=@protonmail.com> <36919.1624649280@segfault.tristatelogic.com> <24790.13300.679983.900189@jerusalem.litteratus.org> <778F35B8-10F3-4D4D-8200-A235FD9A0762@unrelenting.technology> <24791.42526.208238.436624@jerusalem.litteratus.org> <C46C9420-7745-434D-B408-288B0BCFEBBA@unrelenting.technology> <24792.26420.394563.785764@jerusalem.litteratus.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --0dBP9naRPb1KsFFY6Ujg3gKAZXDfgpZtT Content-Type: multipart/mixed; boundary="ccPodmtfrWUwjH52ayDi2fAl3RwWKF48Q"; protected-headers="v1" From: Stefan Esser <se@freebsd.org> To: Robert Huff <roberthuff@rcn.com> Cc: questions@freebsd.org, x11@freebsd.org Message-ID: <85b5b9b3-ad93-e8ac-2e86-b2f277ed7753@freebsd.org> Subject: Re: Old NVIDIA card, new FreeBSD = failure? References: <uZ6VybGvR6ddjj1CVAd0CMNpgvfbc65oLMD5y8r7OPur5j7flNkWuLoxJAueOHkyAJoOW68fE1zpTrvk18VPxSU3drao03Lv0n8UM6ge3y0=@protonmail.com> <36919.1624649280@segfault.tristatelogic.com> <24790.13300.679983.900189@jerusalem.litteratus.org> <778F35B8-10F3-4D4D-8200-A235FD9A0762@unrelenting.technology> <24791.42526.208238.436624@jerusalem.litteratus.org> <C46C9420-7745-434D-B408-288B0BCFEBBA@unrelenting.technology> <24792.26420.394563.785764@jerusalem.litteratus.org> In-Reply-To: <24792.26420.394563.785764@jerusalem.litteratus.org> --ccPodmtfrWUwjH52ayDi2fAl3RwWKF48Q Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Am 27.06.21 um 13:55 schrieb Robert Huff: >=20 > Greg: >=20 >> > b) I have a very limited budget, and would ideally like to be >> > able to use this on older systems - say ones with a PCIe 2.0 >> > expansion slot. >> =20 >> No conflict here: PCI Express generations are all backward and >> forward compatible. You can run the newest gen4 cards in gen2 >> slots just fine (obviously at gen2 bandwidth). >=20 > As Johnny Carson used to say: "I did not know that." =20 > <inhales; exhales> > So now I'm back to the question: what is the earliest GCN version > actively supported by amdgpu and drm(-kmod/-current-kmod)? More > correctly: where is this documented? I can look it up myself. Hi Robert, I've got a passively cooled R7 250E (Cap Verde Pro) with 2 GB video RAM (probably identical to the GDDR5 version of the Radeon HD 7750). All technical details can be found in Wikipedia: https://en.wikipedia.org/wiki/Radeon_HD_7000_series https://en.wikipedia.org/wiki/Radeon_Rx_200_series It is a GCN 1st gen. card and supported by the xf86-video-amdgpu driver and the DRM kmods and libva drivers. I would not get a lower end card, they are neither cheaper nor more power= efficient (idle power of 10 W, 50 W max., allowing for a very silent fan or even passive cooling in a case with forced airflow). The HD 7790 is already GCN 2nd gen., but probably harder to get, and at $70 about twice as expensive as a HD 7750 on eBay. All R5 240 and higher cards should work as well (R5 220/230/235 are Terascale cards). The only drawback compared to a modern card is raw performance (but the 7750 is already faster than today's typical on-chip VGAs) and lack of HW decoding of modern video codecs like VP9. Regards, STefan --ccPodmtfrWUwjH52ayDi2fAl3RwWKF48Q-- --0dBP9naRPb1KsFFY6Ujg3gKAZXDfgpZtT Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsB5BAABCAAjFiEEo3HqZZwL7MgrcVMTR+u171r99UQFAmDYgPoFAwAAAAAACgkQR+u171r99USf cgf6A6pCwMmGdmMZrHv4GSKdZy6EI4amQ1InNFjMIXLxnG0y63Rykt99Ktn9wCkQmkwJzXDP8sgb D9GJ9fZOvtc5DyKzf+ucr3PzS6v4N0DASWKvKZhYlX5Me6a8deLVO77WxvUZ8AURJoP7tC3blFvd 3taqvdbYzxZehyEIi4birU+vvKiuqo4Tq8VVJ9BTx0VB2DBPip1axVJ+cihsDiMsXD3K5aGnT1VK M/ibRHF44kCGNtDa3pEOgI0lkNqBXX+d5K/M547/+vsviyI8OSX7dtpkMqX5nD4uCFbVtBRK0nIC kkHMfTTAvuv1xdAMqwlEZMRbje8ydPRjaGNfjuuu/w== =kkym -----END PGP SIGNATURE----- --0dBP9naRPb1KsFFY6Ujg3gKAZXDfgpZtT--
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