RX 5700 - Help with overclocking needed

[Cafa]

Hi guys.

I got 4 cards Asrock RX 5700 Challenger OC 8 GB and they start at around 50 MH/s on Ethash out of the box.

I'm on Windows. I loaded up the 5700 XT BIOS through MorePowerTool.
I'm using AMD Wattman to overclock. I've tried MSI Afterburner but it broke really easily. So it's Wattman for now as I'm trying to find correct values anyway. I can use something else later.

Without knowing what I'm doing, I got up to 51.8 MH/s (133 W) with these settings at Wattman and it's stable:
-12% power
1788 MHz VRAM
1610 MHz GPU
913 mV

I see people mentioning lower voltages, such as 800 mV, and lower GPU clocks such as 1300 MHz, and I know I should overclock the memory more. But when I go outside these values I quoted, it all breaks, Wattman resets itself to default values.

So what am I doing wrong? Any help is appreciated, especially if someone is using the same Asrock RX 5700 cards and can show me the correct numbers. Thanks guys.

[Echo8002]

Try:

Cclock (core clock) 1320 or 1420
Mclock (memory clock) 1800 or 1810 or 1820 (in HiveOS 900 or 905 or 910)
Cvddc (core voltage) 750 or 775 or 800 or 825 or 850 (if your can't don't want lower than 850 voltage in Afterburner(if you are on windows), use the Phoenixminer -cvddc 750 command
Mvddc (memory voltage) 780 or 800 or 825 or 850
Memory controller voltage (in HiveOS) 1280 or 1300

Don't touch the power limit. You will still make around 52mh but on lower power consumption. You can flash your card also and make around 55.5 mph. There is a video from Guntis Vitolins on Youtube for another trick for 1 extra mh. Watch it too if you like. Use Atiwinflash ver. 2.93 plus and Red bios editor. Copy straps from 1550 (or 1500) to higher 1750,1850,2000 (not sure these are the exact numbers), save, open the other strap tab, do the same and save again to your OC BIOS. Notice that in most Navi cards the BIOS has 2 straps tabs. Better watch youtube how to flash your 5700.

[New_order]

I don't think it's worth overclocking RX5700 for two reasons

1. It will draw more power, you want to lower the power draw for better returns and avoid spending more on electricity

2. RX5700 are very hot, overclocking them will make them more hotter, this can shorten their life span

[safar1980]

https://www.youtube.com/watch?v=vu6PMKzDBDg
Turn on subtitle translation and use Rave OS.
These video cards have very poor cooling, so you need to use a mining box or good ventilation

[Echo8002]

I don't think it's worth overclocking RX5700 for two reasons

1. It will draw more power, you want to lower the power draw for better returns and avoid spending more on electricity

2. RX5700 are very hot, overclocking them will make them more hotter, this can shorten their life span

It's undervolting mostly what I have proposed. Only the Memory is overclocked by 50.

[Cafa]

Thanks guys.

I'm currently stable at 53.7 MH/s and 130W.

I used AMDVBFlash 2.9.3 to flash the latest XT BIOS version on TechPowerUp for my non-XT card (ASRock Challenger), ASRock.RX5700XT.8192.19026 from 2019-09-26.
Then I used Red BIOS Editor to reduce the voltage for both GPU and memory to 850 mV, and to copy both 1550 straps to upper memory clocks. The other XT BIOS version for my card has 1500 straps, not 1550, but I couldn't get that BIOS to work so I'm using this one. The 1550 straps didn't bring me any benefit whatsoever.
And then I used OverdriveNTool 0.2.9 to increase the memory clock to 1860, which is the highest stable value. Any higher than that and I start getting AMD Wattman resets to default values.

So, is this it? It seems I've reached the limit with this particular setup, as the only thing that influences the hashrate further is an increase to memory clock, which then gives me higher MH, 54.6 and up, but it crashes within 10 minutes. I could also reduce the voltage further probably, but at this point I'm looking to get a better hashrate as I see others went up to 55, even 58-59.

I'm not unhappy with 53.7 MH/s but there must be ways to go up further.

[digital$]

what are you temps?  im running 9 X ROG-STRIX-RX5700-O8G-GAMING.  dropped cores to 1508(lowest card) highest is 1523 no mem overclock(default 1750)  fans run at max 24%..temps register on highest @57 degrees and rock solid at 50.6MH ethermine.org

also using wattman

[waywoos]

I don't think it's worth overclocking RX5700 for two reasons

1. It will draw more power, you want to lower the power draw for better returns and avoid spending more on electricity

2. RX5700 are very hot, overclocking them will make them more hotter, this can shorten their life span

quite the opposite . what have you been smoking.
clearly we are under volting making things not as hot.
smoke another!!!!!!

[Cafa]

I reduced the voltage from 850 to 825 mV, wattage is down to 120 W. Temps are 52-54 C.

So, definitely not running hot.

[digital$]

sounds about right.  temps are perfect.  feel i could tweak my voltage settings slightly as well. 

[Cafa]

Ok, stable now at 57.0 MH/s, 120 W, 56 °C.

I was finally able to change the memory straps, had to use amdvbflash 3.04+ in order to be able to flash the BIOS. Other versions refused to flash the BIOS with changed straps.

I only had to decrease the memory clock a bit, from 1856 to 1852 MHz.