Using Rx 580 and Rx 480 for mining yet struggling with memory optimization.
Using Rx 580 and Rx 480 for mining yet struggling with memory optimization.
So I own a mining rig equipped with three GPUs
MSI Z390 GAMING Plus
I3 9100F (using the 580 card for monitor)
DeepCool DA700 Watt PSU
570 Micron, 580 and 480 both Samsung
I achieve 570 to 2200 with 1150/950mV up to 31 mh/s without any BIOS modifications – it doesn’t work on it.
But when I use 480 and 580, I can’t exceed around 2015mhz on memory; they don’t crash, but I see a lot of memory errors with just 20mhz up.
Both 480 and 580 run at roughly 75-80 watts after undervolting the core clock.
Temperatures stay at 67 degrees or less.
They appear completely resistant to overclocking, which is odd since I only use BIOS modifications with the “One time bios mod” from Polaris – I get 28 mh/s.
What bothers me is that even the 480 model doesn’t work with the “One time bios mod” from Polaris; I have to manually adjust the timings from 1750 to 2000 – that’s the only way it functions.
I’m using the newest AMD drivers for the 580 (assuming they’re identical for 400 and 500s).
Applying the drivers to overclock seems imperfect, as they often crash too frequently, especially when adjusting fan curves! I’m using OverdriveNTool 0.2.9, previously using Afterburner, but I’ve heard you can’t undervolt properly in it.
I tried the “special blockchain drivers,” though I’m not sure they’re the best option – they’re over a year old. Still, before that, I had a 3060Ti and had no issues.
I’m spending four days testing now. I’ve increased the memory voltage, but it’s causing errors in HWinfo – a lot of them.
My main concern is why memory isn’t being able to overclock properly. Everyone claims they reach at least 30mh/s easily, yet say they get around 2150 on memory. Should I try increasing the memory voltage? Would it be worth it if power consumption rises too much?
The card needs to include two bios chips... bios is essentially a chip containing all the required data for starting and operating it. The card must possess two bios chips = dual bios. If it has dual bios, it should feature a bios switch... and always keep one as the default, with the other being the modified version (the opposite applies in reverse... you should have one default for unexpected cases).
Memory oc is typically performed by directly uploading into the second bios, if available. This method ensures stability (it’s not just for Nvidia), and there are numerous tutorials online. You should explore more and adjust the voltages accordingly. While there are many guides on bios uploading and default settings, it largely depends on the GPU memory you’re using.
Testing is essential—run several tests and possibly re-upload different configurations until you discover the optimal settings for your memory. It’s crucial that the memory operates without errors, as instability can lead to crashes and rejection of shares!
Some cards even reach 31-32Mh/s stability. Regarding drivers, I’ve used the blockchain driver from the beginning (about three years ago). So yes… for me, it’s the top choice—it doesn’t require updates, and you shouldn’t be mining GTA 6 or 7 while using it!
It's something I've heard before, what does it mean for a card to have a second BIOS? Does it require a factory copy or can you upload a different one? Is the second one replacing the first? What's the purpose of it?
Yes the card needs to include dual bios... bios is essentially a chip containing all the required data for starting and operating it. The card must possess two bios chips = dual bios. If it has dual bios, it should feature a bios switch... and always one should be the default, while the second is the modified version (the opposite applies in reverse.. you should have one default for unexpected cases).
I own an Asus Strix 480 Samsung, an MSI Armor 570 (Micron), and a Gigabyte Gaming 580 with Samsung memory.
From what I understand, only the Sapphire and a few XFX cards feature dual bios.