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On 30/05/15 12:02, Adrian Midgley wrote: > My Nvidia 290 cards are not up to DVI for the bigger monitors I have > now. But I'm back on them now. > > A Matrox M9148 worked very nicely under Wheezy. Matrox don't officially > support that but it was fine. > > Matrox will not at present advance their drivers to current Ubuntu etc, > or to Jessie. I know, caught out by bloody proprietary software. > > What would the panel choose? > > Most demanding use is photo-editing. > > I could live with a good twin headed card, can actually find uses for 3 > monitors, and actually have 4 racked up here. > > Nvidia? > Radeon? > > Models? > > I can make no sense of the published abilities of them vs the demands > now and in a few years of the software. > > PCIe 16 better than 1 for this? I have both slots. Matrox? I remember them so fondly, and the manual tweaking of xorg.conf to make them work properly slightly less fondly. I'm a somewhat demanding linux graphics user as well: currently on a single cheap - but still 60Hz - 4k monitor driven by a Nvidia GTX 970. Some manual adjustments, xorg-edgers PPA and a custom kernel was required to fully unlock it's potential but I got there in the end. I would recommend exactly the same to you, unless you're on some kind of seriously reduced budget: forget AMD despite the much touted eyefinity multi-monitor technology which sounds like it might be quite attractive to you. My 970 has two DVI ports, a DP port and a HDMI 2.0 port - it can drive 4 monitors at 1920x1080 quite happily (I've tested it). Get a OEM 970 like the Asus Strix 970 rather than a stock card: https://www.asus.com/uk/Graphics_Cards/STRIXGTX970DC2OC4GD5/ This is the exact unit I have. The fans have never spun up under linux, and only testing FarCry4 on windows in 4k was enough to make it properly angry: even then, it remained entirely bearable and well behaved for several hours (I thought I should do a lot of 'testing'). You will definitely want the full 16 lanes for a card like this - your motherboard will certainly have at least one slot available, probably only once you've pulled you existing card. For drivers, I'd recommend the xorg-edgers PPA if you're on *buntu - otherwise, just grab the installer directly from Nvidia. Yeah I know, proprietary kernel-tainting blobs blah blah, but if you want high performance graphics hardware that actually works on linux, you're going to have to bite the bullet. Nouveau is all but useless for those of us that require workstation level display output. There are some new very interesting Radeon 3*0x models arriving soon with HBA memory but they'll not have functional linux drivers for months whereas you could order a Nvidia 970 and have it tomorrow. They cost about 300 quid by the way, although I'm sure you could shop around for a deal. Only disclaimer: I know you do medical work and may have specific requirements. I don't know if you might require 10 or 12 bit colour support for DICOM images for example. If you're titanically loading up the card with multi-gigabyte texture maps then a 970 isn't going to cut it but I'm guessing if you've been happy up until now with dinky little stuff like a Matrox M9148 and Nvidia 290s that's not going to be an issue for you. If you absolutely *require* a workstation class card then ask again - I'm used to this stuff. Even my laptop has a quadro class card in it, and my dayjob workstation has a w9100 installed. There's also a full rack SGI in the garage which is essentially nothing but an OpenGL accelerator, with the Infinite Reality pipeline. Ah, ridiculously expensive workstation-class graphics stuff. My fundamental interest and weakness in computers. Now I have to not go on Ebay and buy stuff I don't need but want really badly... Cheers -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq