miliuco Posted February 26, 2022 Share Posted February 26, 2022 (edited) Although graphics cards assembled by XFX have negative comments in Hackintosh forums by having custom BIOS that can be more problematic for macOS that of other brands, I have installed a XFX QICK 308 AMD Radeon RX 6600 XT 8GB in Monterey 12.2.1 and the result has been excellent, installation was very simple and performance is much higher than that of the previous card, RX580 8GB. This card is one of the 6600 XT cheapest even though it can still be considered expensive compared to what would be logical in other circumstances (shortage of components and mined cryptocurrencies). The main components of my computer are Z390 Aorus Elite board and Intel i9-9900K CPU. Current macOS status of AMD 6000 series graphics cards is: Working on macOS - Family Navi 21: 6800, 6800 XT and 6900 XT (since Big Sur 11.4) - Family Navi 23: 6600 and 6600 XT (since Monterey 12.1) NOT working on macOS - Family Navi 22: 6700 XT - Family Navi 24: 6400, 6500 and 6500 XT. Of course 6800 and 6900 series are clearly more powerful than the 6600 but their current market price is very high. The 6600 XT has higher performance than the 6600 and, this particular model of XFX, can now be found for a price of approximately 500-550 €. The model is long size but no longer than the XFX RX580 it will replace. Surprisingly, it's even slightly lighter, probably because of the metal housing that the RX580 incorporates. Requires 8 pin power connector and recommended power supply is at least 600-650W. It has 4 DisplayPort ports and 1 HDMI port.Installation Physical placement of the card does not deserve comment, it's like any other PCI-e slot card. Installation on macOS is very simple. The same EFI with OpenCore 0.7.8 (Lilu and WhateverGreen included) that worked with the RX580 works for the 6600XT with a single change: add agdpmod=pikera in boot-args to prevent the screen from going black on the desktop. The card is well recognized as seen in System profile. Working on macOS Overall performance is very good, smooth, with 2560x1440 resolution at 60Hz on a 4K monitor. The score in the GeekBench 5 test is almost 60% higher than the RX580. Working on Windows Many Hackintosh users have double booting with Windows. Here the impressions are also very good, system has kept the same AMD drivers without requiring update. The score in the Geeks3D FurMark test is double with the RX 6600 XT (approx. 6145) than with the RX580 (approx. 3050).Temperature sensor Starting with the Radeon VII model, it is necessary to use kexts to read the temperature of AMD graphics cards since macOS stopped exposing that data directly. This also applies to the 6000 series. To know the temperature of the card you can use @Aluveitie RadeonSensor. It consists of 3 elements: Radeon sensor.kext: Lilu plugin to read card temperature SMCRadeonGPU.kext: to export data via VirtualSMC to monitoring tools such as iStat Menus RadeonGadget.app: to display the temperature in the menu bar, it requires RadeonSensor.kext only. Note: SMCRadeonGPU.kext has to go after RadeonSensor.kext in the config file.plist of OpenCore and of course both after Lilu and VirtualSMC. I have tested these 2 extensions together and they seem to work well, iStat Menus adds the temperature of the 6600 XT as one more sensor to display in the menu bar.Resizable BAR (ReBAR) Note: you can read about ReBAR here. RX 6600XT cards support ReBAR. To activate this feature you must: Enable it in BIOS menu (usually next to Above 4G Decoding option, ReBAR is displayed when enabling this other option) Set config file.plist in order for OpenCore to boot with ReBAR enabled, you have to set the value of Boot >> Quirks >> ResizeAppleGpuBars=0 (instead of -1, default value). Note: UEFI >> Quirks >> ResizeGpuBars must always be -1. I have tested the card with ReBAR on and off and I have not noticed any difference. GeekBench 5 test scores on macOS and FurMark on Windows have been virtually identical. It is likely that with a CPU of 10th generation or newer and games of big graphic demand the performance will improve with ReBAR enabled but, at least in my system, there is no gain in it. Edited February 26, 2022 by miliuco 4 2 Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/ Share on other sites More sharing options...
selphy Posted March 8, 2022 Share Posted March 8, 2022 I have RX6600XT Nitro+, anyone try to change RGB color on Monterey ? I can't find any solution. I saw that, https://gitlab.com/CalcProgrammer1/OpenRGB/-/issues/1707 Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2777856 Share on other sites More sharing options...
miliuco Posted March 8, 2022 Author Share Posted March 8, 2022 @selphy No, I've not needed that and I don't know how to do it, sorry. Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2777861 Share on other sites More sharing options...
viorel Posted June 25, 2022 Share Posted June 25, 2022 These are the errors in the log with radeon 6600 xt, maybe someone will open a ticket in the whatevergreen branch and the developers will look 6600xt_errors.txt Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2787093 Share on other sites More sharing options...
Baio77 Posted October 19, 2022 Share Posted October 19, 2022 https://github.com/perez987/RX6600XT-on-macOS-12-13-with-PowerPlayTable/issues/1 @miliuco 1 Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2795540 Share on other sites More sharing options...
miliuco Posted October 19, 2022 Author Share Posted October 19, 2022 @Baio77 Just read, I’ll try to check the issue as soon as possible. Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2795546 Share on other sites More sharing options...
miliuco Posted October 20, 2022 Author Share Posted October 20, 2022 @viorel The errors seen in the log doesn’t help to me. Post your config.plist file. @Baio77 Answered in GitHub, I don’t know if your question is well answered. 1 Link to comment https://www.insanelymac.com/forum/topic/350911-xfx-rx-6600-xt-graphics-card-in-monterey-1221/#findComment-2795568 Share on other sites More sharing options...
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