A bit of a struggle but finally got the 6600xt hellhound working on TRM.
I have the same Problem - so i Put 3x 6600xt with 2x 2060 
this works fine
I have 2 Rigs of this Setup
On Tuesday I get anoter 2 x 6600xt - i will try to add one more to every rig
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I am just getting started with hive os and trying to overclock my 2 Sapphire 6600XT but it looks like the are not applying any settings so i looked at the command line and getting it looks like i am getting some errors anyone else has the same probleme ?
Thank u
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RX 6600XT ETH / ERGO / BEAM with lolMiner | by J | Aug, 2021 | Medium
We are going to try today a RX6600XT thanks to #Jumper for the GPU to do the test.
We are going to test it in a Mix Rig in HiveOS.
Mix Rig
That will never work, because we have an old version of HiveOS, so we decided to create a Hive Shell and do:
hive-replace --list
After that we select the last stable image writting 1 and later writing yes
Update of HiveOS done
Then it will automatic restart and now we have HiveOS 5.4.0-hiveos #140
We can see now perfectly the temps of memory and Watts. Let’s start to configure it, and we found the first problem:
Needs to be updated minimum to 0.6–209
After that update we will be able to go up in memory more than 1075.
Now Memory Pick 1100
With 1000 in Memory we have 28.4Mhs
With 1100 in Memory we have 31.2Mhs
With 1150 in Memory we have 28Mhs it goes down let’s try to find our max, reducing and finding the value between 1100 and 1150.
After testing we see that if we increase to much the Memory the vaule deacrese, for our card the best value is 1130 -1132 where we are in 32Mhs.
So now we have 32Mhs at 65W, let’s try to reduce that Watts, after several modification we are able to get less than 50W
32Mhs at 49W
Really an interesting GPU to play, temperatures of the card are incredible good.
The results for Beam: Core 2000 / Memory 1050 = 15–17sol.
At the moment not ERGO miners ready, we will update when they are able to mine with 6600XT
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Red Devil, mate.
Hi guys, I have 2 ASRock Challenger / 1 Sapphire Nitro / 1 Gigabyte Eagle all with Samsung Memory.
My current settings are 1100 core clock / 680 VDD / 1155 mem clock. I’m having 32.8Mh - 57W
I cant find any stable settings to trade 1-1.5Mh for 10W…I tried to tweak, tried your guys settings, always unstable.
Does anybody has stable settings to run at 48-50W ?
Thanks!
Currently have 2 RX6700 and 1 Sapphire pulse RX6600 GPU rig setup on Hive stable version and working fine .
All GPU’s are in lane 1,2,3.
When I add 2nd Sapphire pulse RX6600 to rig into lane 4 , the fans start up but hive is not detecting.
Am using a MSI X470 motherboard.
When I try using Riser in a lane 5 or 6 then rig doesn’t connect to hiveos and have to reset bios to get connected to Hive again.
Maybe I need to change something in BIOS?
Any ideas please ?
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Hi, i am using mixed rig with 4 rtx 2060 and 1 rx 6600xt with nbminer.
Gpu starts mining normally but after a while some card stops mining and gets undetected like in screen, it is not Always the same card, just randomly one crashes
All this happened since i added the amd card to the rig.
I am on latest hiveos version, thanks in advance if someone can help
I’ve got 3 RX6600XT, all different “flavors” (manufacturers, models). Running mine on core at 1100, VDD at 600, mem at 1150. Shows around 60W of power draw on each card, although that probably isn’t accurate. I have a watt meter on the way to put inline with the AC supply. It does seem to crash every 12 hours or so and recover, I haven’t determined why as yet. At the settings above, my cards are mining at about 32.8MH/s mining Ethereum using Phoenixminer.
“So now we have 32Mhs at 65W, let’s try to reduce that Watts, after several modification we are able to get less than 50W”
What modifications? What are your final OC settings?
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I have a very similar issue.
If my mainboard has 6 pci-e slots, then when 5 are full connecting the 6th never works.
I tried this on 3 different boards. Each time you fill to the last PCI-E slot, it doesn’t mine. If you leave one pci-i slot free, it works perfectly fine.
I’ve replicated this behavior now on multiple brands of board (asrock, asus and gigabyte). It is not the boards because if I take 2060 supers and fill all the slots it works fine. This behavior ONLY occurs with 6600XT’s and it’s fucking annoying as hell.
Yes “fucking annoying as hell” is correct.Its my 4th card that won’t get recognised ,so intresting to hear your issue.
Glad to hear you think this is only a 6600XT issue, and not the motherboard.
Ive seen posts on here of 4x 6600XT running ok, so maybe a conflict if using with other mixed GPU rig’s .
I don’t know .Hopefully future updates will short this out.
4 6600xt is no problem
5th let stuck any random card sometimes
6th kill the whole rig and it doesnt start
I am also still having the same issue. I have 2 separate rigs of 6600xts so far. Both work great with 4 cards. As soon as you add the fifth Hive fails to apply OC settings. Then only 4 of the cards hash but without the OC settings the rig begins to over hear.
Hopefully they can come out with an update to fix this issue. To expensive to run these rigs with only 4 cards on them. It would be one thing if they were 3090s.
I am running a 12 6600xt rig without any issue. try another mother board maybe…
What mother board do you use?
Biostar TB360-BTC PRO 2.0 Ver. 6.x LGA1151 DDR4 Supports DX12/HDCP ATX Motherboard
I got 3 of them from aaawave
Your Motherboard chipset or CPU might not have enough PCI-e lanes available to connected directly…
Some chipsets (like the B450 ) have limited PCI-e lanes compared to the higher end chipsets
Low end Gen 1 Ryzen also have cut down PCI-e lanes available too
M.2 NVME can use up PCI-e lanes so use SSD’s
Update the BIOS then "disable the CSM and enable the "Above 4G decoding
Set the PCI-e speed x1 @ Gen 2
What psu set up are you all using for 12 gpu motherboards?
Guessing your mixing in some server psu ‘s