I know there are countless threads about this, but I really need to update my graphics card as mine isn't doing so well. And I would not mind being able to run Sierra & my other apps with some more umph. I'm on el capitan now. any help would be super helpful & appreciated. here's what I have now.. Mac Pro 4,1, Early 2009 (Which I'll flash to 5,1 for Sierra) 2 x 2.93 GHz Quad-Core Intel Xeon 32 GB 1066 MHz DDR3 ECC NVIDIA GeForce GTX 285 1024 MB, the EVGA Mac Ed. it has 240 cuda cores. My needs & uses.. I am not much a gamer. So super fast FPS in games isn't the top priority for me. My biggest priority is using it for more professional needs. What I do & need most is.. - - well, just doing normal stuff which this card has a tough time with right now. or something is wrong because in Activity Monitor the WindowServer is constantly eating up 90% to 200-300% & things are just real sluggish. Even switching apps with multiple open windows is slow. I have a PCIe Accelsior drive running as my boot & most other things so that isn't the slow down. I'm hoping that it's some what at least because of my graphics card and it being old & OS X wants or needs a faster graphics card but even if not I still need a new card since mine is dying & I would like a boost while I am at it. - - I also do lots of design work. Photoshop, After Effects, Final cut & the like. Also I some times do bits of 3D work in Maya & Cinema 4D. Those can all use much more gpu power & most if not all of them take advantage of cuda. my current card only supports cuda version 1.3 which is super old. heck maybe even OS X can use cuda? I'm budgeting about $300 at the top end. if needed. I've never used an AMD card before but if someone thinks one of theirs would be better pls tell me. I know nvidia makes drivers for their Pascal series cards but most are out of my price range. But there are a few. Yet I get confused with all of the different manufacturers & kinds & wild price differences. Some offer more RAM but less cuda cores. some offer more cuda cores. here's just a few I saw if any one could see what I mean, I'm not limited to these if you know something better. I just don't & don't know which part or what to look exactly for.. On Newegg (card titles are linked).. EVGA GeForce GTX 1050. 2 GB, 640 cuda cores -- $109 (with multi versions of it similar price. not sure which I even would get. But why so cheap??) MSI GeForce GTX 1060. 6 GB, 1280 cuda cores -- $299 (much more everything I think & price is ok if worth it) OR.. The only other thing that I see is something from the MacVidCards site. Their page for 4,1 & 5,1 MPs has options but they are more expensive. Except for mostly this one.. Nvidia GTX 960. 2GB or 4GB, 1024 cuda cores -- $285 or $330 (I could spend the extra $30 if it would be the #1 top pick) With that last one -- the macvidcard one it wouldn't be the Pascal chipset since it is a 960. I know it would work right now but what about in the future? How do I know that High Sierra 2 will still be compatible? At least with the Pascal based ones in the 10 series, well I think I have a better chance if I'm thinking rightly about it. Or am I thinking about it all wrong. If I knew what to search for beside these which is something better then I would go for it too if someone has an idea. I think any of them will work in my PCIe 2 slot even though they're made for PCIe 3. I think. After reading a page about upgrading a 4,1 graphics card at.. https://www.imore.com/upgrading-gpu-your-old-mac-pro-it-worth-it Their final conclusion was this -- "Was it worth it? Hell no!" ..So now what If my CPU & PCIe 2 is really going to be that slow for it, is it worth even doing? I've read many mixed pages on this & cannot make up my mind. It seems that many ppl think it is worth it. some do not. Just like many Mac Pro users out there with older models like mine, ideally I'd like to just buy a new Mac Pro. but not the current Mac Pro. one that's more expandable. I've seen the report about a possible new Mac Pro coming sometime in 2018 but thats a long time from now. Too long to wait for me for this, if I do it. But just long enough to where I don't want to sink more than about the $300 into my current model. I just go in circles not knowing what to do so if anyone can help with just helping make a choice of what's out there, please please post it. I'd thank you so much I'm not a super computer tech person, but I am pretty sure I could get at least a supported card like the Pascal ones to work or a one from macvidcards since they come ready to go. Unless there is a ton to it, even then..I with adapter cables I think I can do it. And that's my last question which is about power requirements. That iMore link above says that my Mac power supply should put out roughly 225watts. I'd rather not have to get another power supply or use an external one if possible. But if I have to I have to. And with the 10x series cards I think I will have to..question mark?.. Please please help. thank you thank you --- Post Merged, Jun 23, 2017 --- A couple fast things I forgot to mention: I forgot to say that I'd be driving 2 Apple Cinema Displays right now. A 23" and a 30", both using the Dual-DVI cables. I noticed most cards these days don't have 2 DVI ports on them. usually just 1 if lucky. But I think I can easily drive at least the 2nd monitor or even both using DisplayPort adapters as long as there aren't drawbacks besides buying an adapter. but I have no experience with Displayports just to mention it. HDMI out, if it came at a very cheap price or none extra at all would also be nice. But is definitely not a deciding factor. sorry for the mess. it's my first post. thank u all again. --- Post Merged, Jun 23, 2017 --- OK last edit for me. Just want to add that yes I want a powerful card, but not at a massive electricity bill price. I know you can't have both. So maybe even jumping pages here, but something as old as an Nvidia 680? It is on the macvidcard site, so it should work right out of the box, has 2 dual link dvi ports, plus an hdmi port, and a displayport & 1536 cuda cores, and 2GB of memory. And at least a some what newer supported version of cuda, to v 3 I think. ..LINK to it.. But, it lists it as in the Mac Pro "3,1" category. which makes me think it isn't going to be good enough. My main concern is that my current card -- the 285 requires the 2 extra power connectors coming off of my motherboard for power (I assume in addition to what it can get from the PCI lane itself). ..However this 680 card or at least their version on that site does not require ANY extra power. Only the PCI lane power itself. Did technology just leap in that amount of time between when I got my 285 & the 680? Or am I missing something? More power seems like it'd be needed for more power.