SAPPHIRE Radeon 11265-05-20G Pulse RX 580 8GB GDDR5 Dual HDMI/ DVI-D/ Dual DP OC with Backplate (UEFI) PCI-E Graphics Card Graphic Cards

1. Out of the box into the mac - use a dual 6pin to 8pin adapter cable2. boot up - screens are black until login screen appears. - No apple logo showing the boot process.3. Login screen appears - log in4. Open up Premiere Pro 2020 it sees metal GPU acceleration off you go! SIMPLEI replaced a really good nvidia Quadro K5000 which had 4GB Video ram and that card worked great in Premiere Pro 2019 with CUDA. That nvidia card - not so good with metal, actually awful with metal in 2019. Updated to Premiere pro 2020 and found out adobe discontinued CUDA sadly. I then tried Metal as the option for PP 2020 with the nivdia K5000 card and it actually worked better than it did in 2019 but I felt that it suffered a little. It lagged sometimes where it did not in 2019. Multi-cam edit seemed quirky too. For the low price of AMD I figured try out the AMD Sapphire Radeon Pulse RX 580 after all it had to be better it was twice the VRAM. My nvida card cost about 5 times the price of this one, oddly, and still does.My nvidia card was a lot of work a few years ago, I had to download drivers then install cuda software…. On and on… Every security update meant downloading and install the latest cuda update… This AMD none of that nonsense. It just works.So you don’t get a Apple Boot Screen, I don’t care it’s a mac for crying out loud I can count on 0 fingers how many times I needed to go to recovery mode in 11 years. I came from windows 11 years ago and never looked back. Macs are just easy, everything about them is easy. Macs just work! If you get stuff that is certified for mac or get what apple recommends you have no issues. I use Carbon Copy Cloner to keep a backup boot drive so if the drive should fail I can pop in the clone and get back up in minutes minus any updates. I keep my clone updated for the most part so I can never see why I should need the startup screen with options or recovery mode. I don’t dual boot so I have no need for the option command. I use Parallels to boot up windows 7 inside the mac OS for times I need that, I never just boot strait into windows at power up. If I ever need options or recovery I’ll use my old card. When I upgrade I just do it from the OS, you know download install etc. My mac started with snow leopard and I have kept it updated, mostly, never doing a startup drive method, just download and install method in app store.This card works great in Premiere Pro 2020 better than my Nvidia K5000! Can I tell a performance gain?… yes . It takes Processors, RAM, SSD’s and a good GPU - to make a good editing performance machine. GPU is only part of the equation but is probably one of the most important.Backstory to why I choose to upgrade from a good video card to a good video card:For the number 1 reason PP2020 did not work all that great with nvidia. Number 2 I could not upgrade to Mojave with the nvidia card, ok it will upgrade but the problem was Premiere Pro 2020 on Mojave with the nvidia K5000 running metal was quirky, I mean quirky to the point it drove me nuts. Mojave has no built in drivers for nvidia which is why I presume. Their was no cuda or driver updates from nvidia and every time you booted I got an error message about it. I use a Blackmagic card that outputs my preview to a TV monitor, that was herkie jerky and the GPU affects that I guess. The computer display was smooth, kind of, but my preview monitor using Blackmagic was way to jerky to the point of maybe it was doing 10 frames a second. I Updated the Blackmagic card to the latest software to no avail, so that had nothing to do with it. It had to be nvidia. That was a deal breaker to go back down to High Serria.I don’t plan on updating to Mojave until adobe quits supporting high serria. But knowing I can now and that PP 2020 works better with the AMD was worth the changeover and for a small investment compared to nvidia costs.

Upgraded from a ASUS Strix R9 380. From a performance perspective, its works great, ~30%+ increase in performance. You can look at online comparisons on what type of performance to expect, and this met that. (playing BF1, Witcher 3, Warzone...)I have it paired with a AMD FX8350, 16GB RAM.Three things I want to point out:1.) The unit arrived with a slightly bent bracket. Was able to use pliers to straighten it out, and amazon was quick to resolve it. Not sure if this is Amazon or Sapphire to blame.2.) After I removed my old R9 380, placed new RX 580 GPU in, everything booted fine. I updated the drivers to the latest via Adrenal 2020 (not necessarily required). After rebooting, my wired LAN stopped working. Windows did not detect it anymore. Just disappeared. Not seen in Device Manager. Did a bunch of troubleshooting (reset CMOS, go back to old drivers etc) to no avail. Instead of wasting additional hours, I just decided to buy a new pciexpress LAN card ($15). I do not know if this directly tied to the new GPU install, or purely coincidental. As time permits I may investigate further. Just felt I had to share this info. **Update**: After thinking about this I am leaning towards this is purely coincidental. Fortunately ethernet ports are inexpensive.3.) From the perspective of stability, I have had this installed for 3 days now, moderate gaming use, only had 2 errors requiring a reboot. This may be due to conflicting software (apparently running any parallel GPU software may pose problems) or games itself. Hard to say who is to "blame" for this right now. With my older GPU did not encounter this. For this I am knocking a star off for now. I will continue to monitor and update my review.UPDATE SEP 16 2020: Changing review from 4 to 5 stars. I have since upgraded my build to an AMD R5 3600. No issues when running its stock frequencies. If I use the built in Radeon "OC" feature to go to 1436mhz, I had some hiccups hear and there. I think its true, AMD cards are good for those who want to tinker around. I have no regrets with this card so far.UPDATE FEB 19 2021: I swapped out my 5+ yr old bronze rated evga power supply to a gold rated cooler master. I haven't had a single crash yet when doing the "automatic overclock" to 1436 (mostly playing COD Coldwar/warzone/Cod WW2. I'm pretty sure my old PSU was finally giving out as it was 5 yrs old (at this point I attribute my previous problems with that). Lesson learned: if you plan to do some overclock get a solid PSU. I am still very happy with this GPU!UPDATE JUL 19 2021: GPU is still going strong with no issues.UPDATE JAN 14 2022: GPU functioning great. Be mindful there is a GPU shortage crisis (COVID) since 2020-2022 and all prices are inflated. Not worth the inflated price.UPDATE JUN 20 2022: GPU is still rocking with no issues. I have decided to upgrade to a Sapphire Radeon Pulse 6600XT to get better (144fps, bought a 144hz display) FPS at 1080p. This RX580 was fantastic and still does phenomenal 75fps 1080p gameplay. I have no regrets purchasing it.