Three questions about GPU choice (for Mid 2011 iMac 27"):
The first feels stupid to ask but I have to ask
1. Is there any difference between cards for sale labelled "for iMac" and those labelled "for Zbook" or "for Dell" etc? The price difference for me in Australia is a 30% price mark up and the "for iMac" items are often used, marked something like "This item may be a floor model or store return that has been used" (?!). (See links below to compare two cards K3100 cards)
Is there a firmware/flash difference or are they just the same thing with labelling just for marketing/search hits?
It may be a stupid question, but I really want to avoid purchasing an incompatible card and then needing to buy another.
2. Is there much advantage in future OS and software compatibility in buying say a K4100M in comparison to a K3100? I can see the difference in performance in the table about all the GPU's on the wiki (thank you all very much btw - you are legends for doing this and helping us prevent good computers retiring early) but wondering if say a K3100 would reduce compatibility with future software.
3. Having asked that question I must concede, I am looking to start a 3D animation course and will be using this iMac for a year or two until I can afford a more recent Mac - would the K4100 be the clear choice here (does it have a downside you have found)?
Background: Mid-2011iMac 27" High Sierra for home office daily use, the GPU failed in 2020 June and I baked it in a toaster oven, replaced the thermal paste with GELID GC Extreme paste (and cleaned dust etc from around the case/intakes/fans). It has been running very well since without a glitch, but I have an OS update to consider. I need to update to Mojave Catalina for boring reasons - due to compatibility of software updates (for Office 365 and a whole bunch of other stuff for work, no updates are available for High Sierra!), and so I need to make the jump to a Metal compatible GPU.
"For iMac" (apparently used)
Condition:100% work. All products are marked with warranty label.
www.ebay.com.au
"For book" (labelled new)
League, France, Russia for about 2 weeks. the image is only a reference.
www.ebay.com.au