RX6800 - Efficient Overclocking

cristhianbini · March 3, 2021, 8:55pm

RX 6800 - Desempenho de mineração de criptografia

Phoenix Miner 5.5e - ETH - (Tempo de memória - Padrão)

59,35 Mhs 2239 core / 2000 mem vcore 1025 / PL 0 165 watts
60,77 Mhs 2185 core / 2050 mem vcore 1000 / PL 0 150 watts
62,10 Mhs 2185 core / 2100 mem vcore 950 / PL 0 145 watts
63,36 Mhs 2048 core / 2150 mem vcore 925 / PL 0 135 Watt - Estável
63,38 Mhs 2080 core / 2150 mem vcore 900 / PL 0 130 Watt - Não 24/7 Estável

Phoenix Miner 5.5e - ETH - (Tempo de memória - Tempo rápido)

60,12 Mhs 2239 core / 2000 mem vcore 1025 / PL 0 165 watts
61,59 Mhs 2185 core / 2050 mem vcore 1000 / PL 0 150 watts
63,06 Mhs 2185 core / 2100 mem vcore 950 / PL 0 145 watts
64,64 Mhs 2048 core / 2150 mem vcore 925 / PL 0 135 Watt - Estável
64,5 Mhs 2080 núcleos / 2150 mem vcore 900 / PL 0 130 Watt - Não 24/7 Estável
62,25 Mhs 2080 núcleos / 2150 mem vcore 900 / PL 0 123 Watt - Não Estável 24/7

Phoenix Miner 5.5e - ETC - Ethereum Classic

60,52 Mhs 2239 core / 2000 mem vcore 1025 / PL 0 165 watts - tempos padrão
61,25 Mhs 2239 core / 2000 mem vcore 1025 / PL 0 165 watts - tempos rápidos
62,77 Mhs 2185 core / 2050 mem vcore 1000 / PL 0 155 watts
64,28 Mhs 2185 core / 2100 mem vcore 950 / PL 0 150 watts
65,78 Mhs 2100 core / 2150 mem vcore 925 / PL 0 140 watts
65,79 Mhs 2048 core / 2150 mem vcore 925 / PL 0 135 watts

Fonte: https://voskcointalk.com/

cristhianbini · March 3, 2021, 11:27pm

Looking for a way to make my MHs bigger I tried to change the miners and found that this new version of HiveOS 0.6-199 @ 210218 is not supporting other miners other than the teamredminer.

I tried to switch to Ethminer and PhoenixMiner but the server crashes and some error screens start to appear, I only managed to start mining again after I put the teamredminer back on.

I believe that an update should be released soon that will allow HiveOS to mine in PhoenixMiner and Ethminer.

Then I researched the developer ads and saw that he made many improvements and launched between yesterday and today, if anyone is interested in knowing what those improvements were, the original text is shown below.

TiasJOntem às 17:06
0.6-200@210301
What’s new?

SYSTEM
Fixed AMD OC errors on when applied on “Big Navi”
Improved stablity hive-replace on some 3rd party hardware

added watchdog-octofan to exclude list.
Improved nvidia-driver-update
added new option --repo for custom repository.
prefer Hive servers for download by default.
skip 32bit libs installation.
internal optimizations.
Fixed memory usage by autofan

MINERS
VerthashMiner v0.7.0

numerous fixes. Check(Release VerthashMiner v0.7.0 · CryptoGraphics/VerthashMiner · GitHub) for details.
NSFMiner v1.3.7 (EthMiner fork)
used board name rather than architecture for AMD.
fixed skipping of 1st pool when connecting with multiple pools specified.
fixed appearance of ‘ghost’ GPU metrics on epoch change.
XMRigCC v2.9.0 (XMRig for CPU fork)
rebased latest RX and CN improvements from XMRig 6.8.2.
fixed 1GB HugePages.
XMRig v6.9.0
fixed crash when GPU mining cn-heavy on Zen3 systems.
GMiner v2.45
numerous fixes.
Check(Release 2.45 · develsoftware/GMinerRelease · GitHub) for details.
miniZ v1.73x3 (stable, latest)
added support for ETH/ETC (beta), fee 0.75%.
improved stale shares for all algos.
added support with 1% fee for RVN, ZELS, SERO, ZANO, VEIL, VBK.
fixed 192,7 mining and improved 210,9 and 96,5.
removed 150,5,3.
improved overall stability.
miniz v1.73x4 (beta)
improved --quit-disconnect option.
SRBMiner v0.6.8
numerous fixes.
Check(Release SRBMiner-MULTI CPU & AMD GPU Miner 0.6.8 Win64 & Linux · doktor83/SRBMiner-Multi · GitHub) for details.

cristhianbini · March 4, 2021, 4:09am

I still haven’t managed to get my 3 RX6800 boards over 186.000MH / s inside HiveOS.

Within Windows I am managing to keep it at 193.500MH /s, close to 194.000MH / s which gives an average of 64.566MH / s for each RX6800 card.

Temperature around 57C with 148W on each plate for consumption.

If someone is getting more on their cards and can share the settings I would appreciate it very much.

mortalmonkey · March 4, 2021, 4:49am

Whats your overclock settings to get 64MH/s? I have a Sapphire Pulse 6800 and Gigabyte Gaming OC 6800.

The Sapphire Pulse is getting 61.7 MH @ 150W
Core: 2048
VDD: 925
Mem: 1075

Still messing around with the Gigabyte.

cristhianbini · March 4, 2021, 1:33pm

Thanks for sharing your settings, it would be nice if more people here in the community could do the same!

Mine as I said are only high because I’m running tests between windows and hives.

186.000MH/s - 3 RX6800 HiveOS
194.000MH/s - 3 RX6800 Windows

llionmind · March 4, 2021, 5:39pm

These are my settings for 6800. Just updated to latest beta (Big Navi)
Miner info also showing VDDC. Using TeamRedMiner

Dont mind those DPM and REF values, looks like they copied from same rig running Polaris cards too

cristhianbini · March 4, 2021, 6:27pm

Friend a question, do you have any special cooling system there on these boards in addition to the original coolers?

I ask this because I noticed that your temperature is very low, mine here are around 54C. Is yours at 33C?

llionmind · March 4, 2021, 6:38pm

No special coolers. Mining rig is just under my bedroom window and there is just -6 degrees temperature outside, window is open

hootie · March 4, 2021, 9:22pm

cristhianbini · March 4, 2021, 10:01pm

It is explained then kkkk here in Brazil where I live the temperature never got close to 10 degrees positive so imagine negative!

hootie · March 4, 2021, 10:09pm

My rigs were in a 28 degree Celsius room located in the Netherlands. Together with 4 other rigs and 2 A10 pro’s 750. Heat is a kind of a problem. When i close the door the room gets 47 degree Celsius. I need to work on the airflow…

twintwin · March 5, 2021, 12:24am

With HiveOS, VDD can only be lowered to 781mv.
If it is Windows OS, it can be operated at about 650mv by using MPT.
This makes it possible to operate 61MH at 110 watts or less in combination with Fast timing.

cristhianbini · March 5, 2021, 3:55pm

I really can’t seem to be satisfied, I’ve been trying different configurations on my RX6800 cards on HiveOS for days, to see if I can at least reach 62.000MHs but it won’t go at all.

I just take the HD with HiveOS and put it with Windows and it easily reaches 64,400MHs, I accept more suggestions and tips from friends because I don’t give up easy on what I want.

RX6800 - 64.400MHs

gmork · March 5, 2021, 3:56pm

With Hive I have an issue. Doesn’t matter if I only have one card in the rig. every time I change OC settings Hive craches 99% of the times. Need to power it off to get it working again. Other than that it’s really stable in my mixed setup using trm. Regarding the heat issues. With one of my 6800XT the mem gets very hot.

gmork · March 5, 2021, 3:59pm

Where did you find version 5.5e ? Only 5.5c on the website…

cristhianbini · March 5, 2021, 10:51pm

@hootie Sorry for my lack of information, but I thought that MHs were directly linked to earnings, right?

hootie · March 5, 2021, 11:51pm

test is by yourself. 24 hour, same OC settings, different miners. Then see how many accepted shares you’ve got from each miner.

hashrates were fluctuating a lot so just figured it out by yourself which miner fits you the best.
The printscreen is from my 8x RX 6800 rig.

cristhianbini · March 6, 2021, 3:01am

This was the most enlightening content I have been able to read to date, thank you very much for sharing this with me!

This blog has already been saved in my favorites!

I am indebted to you, thank you very much!

Giuseppe_Rojas · March 6, 2021, 3:04am

i cant ge lowr watts, what i am doing wrong?

hootie · March 6, 2021, 5:44pm

raise the core clock