Topic: Best efficiency settings for Radeon RX 480 (Read 45906 times)

My MSI RX480 4G runs Dagger Hashimoto at ~21,7-22 MH/s at default MSI Afterburner settings with 143 W (GPU-Z). By reducing temp. limit to 60, core clock to ~800 MHz and fan speed to 25%, I get 21 MH/S with 77 W. I wonder is there a way to reach higher MHs with this card? To my understanding suggested Wattman efficiency settings can only decrease MHs?

Hi!
I'm following this thread because is full of great and useful informations and advices.

I've found this video on yt: https://www.youtube.com/watch?v=Mwb67g4skGM
He is flashing the RX 480 with the same bios, but modifying just the last state (I think).

My question is: could this be achieved also on a 4Gb RX 480?
Would this be the same procedure as modifying these values in Wattman?

Thanks

Great thread! Thank you! Amazing results. I'm brand new to mining, so I haven't yet decided to take the leap and flash my bios. I'm no newb when it comes to computers, but at the same time after such a big investment in several machines, the last thing I need to do is make one mistake and brick several cards. At least not until I get my ROI - At that point, I'll probably give it a try.

Right now I have my stock MSI RX580 at 1230 / 2050 with 910 on core and 920 on memory. I'm doing Zcash and pulling between 305-320. I'm going to try to do some more fine tweaking - do some memory tests and make sure that the card is doing it error free. Fan speed is 30-40% and temps aren't getting higher than 70. They hover between 60-65.

I'm probably about 125 a card. Though, I'd like to get it just a little lower, but still stay at roughly 300.

I tried it on my rig for my 2 480 it is great thanks. Anyidea do down voltage 470 and 570  I have 2 470  on rig making 27.5 at 70w and 2 570 making 28 on 90w (570 is terrible)

Great job!! Do you have "your well-tried settings" for zcash as well?

these settings are great
but as far as i can understand wattman does not support profiles. so when i want to play a game i have to mess up the settings.
recently sapphire released TriXX Utility 6.0.0
http://www.sapphiretech.com/catapage_tech.asp?cataid=291&lang=eng
which supports EVERY rx 480
and indeed it works AND supports profiles so i can easily change settings.
but don' t seem to find a equivalent set of settings for trixx. It allows for:
gpu clock, power limit, memory clock, gpu voltage (goes down to -200mv but starting from what?) and fan control.
can anyone help me archieve same settings 50 watt power draw using trixx which supports saving profiles?
https://s21.postimg.org/olbc99enr/2016_08_27_034839.jpg

Hi, our residential home has a 15amp circuit breaker. So since each rig is about little under 700watts at the wall, I place 2 rigs per breaker safely. So that is about 1400watts running at the wall on a 15amp breaker. I believe a 15amp breaker maxes at 1800 watts before it trips. So if I dual mine, the power increase might trigger my circuit breakers, and I don't want to be that close to maxing out in power on each circuit breakers. I want a little cushion in case for spikes or other safety issues.

But if I was only running 1 rig per breaker, then I can definitely dual mine because there will be extra power slacks for me to play with. So with a 2 rig of 6x 480 set up on a single 15amp circuit breaker, in my opinion it would be best to underclock and single mine only. But if you have like a 20amp circuit breaker, that is a different story.

Great thread pikachuy, can't wait to try your settings when my lasts RX480s come to my house, and finally build my first rig..., with 6x of them but (Saphirre 8GB not 4GB models), hopefully i will reach a low power consumption, with nice settings like yours, because the price of Kw is 0,15€ cts here

Thanks 

PS : I think for be right back the ROI of the rig faster the dual mining for exemple "ETH - SIA", should be a great idea, did you try to find some good settings for dual mining with a nice ratio of undervolting aswell ?

Yea, i'm pretty happy with my 6x RX480 rigs too and running under 700w at the wall. Still waiting on AMD to stop enforcing their driver signatures in windows so I can do some bios mod tweaks to hopefully make it more efficient. Until then, the original post I had is still the best settings I have found so far and is running rock solid since I first posted.

My rig of 6x RX480s with optimized power runs under 700W. That's 140MH/s+ if I'm conservative.

I'll reach ROI before you.

Building another 4x rigs as soon as the rest of the RX480s and risers arrive.

I've looked at the GTX1070 thoroughly before settling on the RX480.

But yes I do agree that we need a fallback plan in case Eth doesn't work out. (But it should)

In either case the RX480 just has far better compute capability per watt.
The amount of the Compute Units(AMD)/ShaderMultiprocessors(Nvidia) are just superior on the RX480 compared to the GTX1070.

36x CUs on the RX480 compared to 15x SMs on the GTX1070

4x SEs (Shader Engines) RX480
3x GPCs (Graphics Processing Clusters) GTX1070
Verdict = same

9x CU (Compute Units) per Shader Engine RX480
5x TPCs (Texture Processing Cluster) per GPC GTX1070 (Each TPC Contains 1x SM)   
Verdict = RX480 wins




My power is free as I can use as much as I need at the moment. Even if that means 10kWh. Included in your rent usually means a small amount for household use.

hey nice one gravedding my post from july 9, and responding to it after those coins ET and ETC have become more profitable, it was not the case back then

right now 480 user are lucky that ethc is very profitbale but it will not last, meanwhile i can mine lbry which is still far ahead of ethc at present

you are still stuck with only one good algo, while neos and lyra are shit on amd card, because they are not optimized, and it's always good to have back up algo, not just one good algo

p.s. it's not for free if you pay a rent for it, it's simply included, there is NO free energy unles you still it, i think poeple don't know what free mean...

2°p.s. no the 480 does not use less energy than a 1070 i have a rig of six 1070 consuming only 900w, running with a rm1000i

seems like a good card , but power consumption

Please stop shilling for Nvidia. Lyra2v2 and neoscrypt more profitable than eth? Care to show any proof? From my calculations Ethereum and Ethereum classic show the best profitability.

Also have you looked at the OpenCL implementation for Nvidia card in Windows? It sucks. I have a GTX1080 for gaming only and it honestly sucks for mining. I use RX480s for mining eth as they have the best Ethereum hashrate per watt and Hashrate to Dollar.

And resell value. For one the AMD cards are near impossible to find whereas there are more than enough GTX cards available. The RX480 had a reference stock 25 times the GTX1080 and GTX1070 combined and it all sold out.

The GTX1070 is a great card for gaming, but the RX480 is far better at mining. It uses less power, you can run 4x RX480s on a single quality 80PLUS Gold 750W PSU if you optimize the power usage settings. The GTX 1070 uses far more power to reach the same hashrate.

Further, saying that someone steals power is very rude. I'm in a situation at the moment where I can get industrial power for free with my rent. Many other people have the same arrangements where they live.

Check your other apps. MSI Afterburner and the ASUS overclocking apps both interfere with Wattman. I closed those apps and everything is fine

Hey nhando, from my understanding, all of the reference models are about the same (4gb can turn into 8gb by bios flashing and 8gb can turn into 4gb by bios flashing), just a sticker difference on the fan, and a specific bios for that manufacturer (some manufacturer set different clock rates on the bios). I tried flashing a 4gb sapphire model bios onto my XFX model, but it didn't let me, so I had to find an XFX 4gb bios to flash onto an XFX model. Other than needing a specific bios matching the manufactures when flashing from a 4gb to 8gb or 8gb to 4gb, I don't see anything else unique.

Once someone figures out a way for custom bios for 480 to work in windows or if AMD stops enforcing the driver signature checks, I will be able to test different bios tweaks without wattman, so everyone can just flash a custom bios and instantly have the best efficiency settings for the 480.

I know you can do this right now for linux, but I was never a linux fan.



Edit:
Sorry, I only mine ETH because the increase heat in dual mining is too much for my set up (multiple rigs in enclosed garage). You might need to increase your power limit even though you underclock/undervolt them, because ETH is memory intensive algorithm, and SIA is gpu clock intensive algorithm. So since you are dual mining, it will put 100% load intensely on the memory and gpu clock simultaneously, so you might need more power to the cards. Give that a try, and let me know.

hey I am doing mixed card rigs

I figured out how to get around the issue of  to much under clock and crashing the rx 480 then not being able to get back in and change settings

It is easy.

Use 1 r9 390 and multiple rx 480s.

the r9 390 uses a different part of wattman .

make sure it is your  display gpu and play it a bit safer with clocks.
then clock the rx 480's very aggressive   if you crash and burn on the reboot the r9 390 will come up and you can access all the rx 480's


my mix and match thread
https://bitcointalksearch.org/topic/mixing-your-gpus-my-thread-on-r9-390s-with-rx-480s-any-mismatch-is-welcome-1561775

a photo shows the r390 and rx 480

this brings up the r9 390 and the rx 480

I've set the settings to 900MHz @950mV for the Chip and 975mV for the memory @2100MHz as well. That works really good, thanks for that. But it's quite strange that lowering the mV for the Chip might hang the system, because the factory default at "State 2" is 910MHz @ 825mV.

Well, maybe there are not all Chip-features enabled in this state 2 and the default 825mV will be stable enough.

Nice work here!

At those settings I would be consuming 1/2 the watts that my 290s do and for a similar hashrate.  Eventually I will be building a 480 rig with the 4gb cards if all remains good for mining on ether, and it looks like mining will still be pretty decent game for at least a couple more months.

Although hash rate could resume the upwards trend as cards become more available.

Do you have any results with ETH + SIA? I've found my best ETH underclocks/volts don't work when I add SIA into the equation.

Very nice work you're doing here Pikachuy.  Do you think this will be similar results for all the RX480 4GB or does the XFX variant have anything unique for it?  You and Phil are doing excellent work on the RX480 front, keep up the good work!