Bitcoin Forum

I see a lot of figures thrown around that I struggle to either achieve or believe. Therefore I have a few questions I'd like you to go through, and I will also answer them and try to help where possible.

Please avoid dick swinging and shit slinging, and please don't exaggerate your figures or recordings; try to be honest.

I know we're technically competitors in this market, but lets try to make it better for everyone(?);


1. How many 480's are you working with and which versions?

2. How stable are your mining rigs?
      How often do they fall over or do you pre-emptively restart them?

3. Best and worst hash rate on the machine?

4. What is your Power Draw from the wall?

5. What is your priority? Power usage? Hash rates? Stability?

6. How do you apply your *clocks (with the program / Wattman / Afterburner)?

7. What are your *clocks? (Core Voltage (mV), Power Limit (%), Core Clock (MHz), Memory Clock (MHz))



1. I have 18 RX 480s Sapphire OC Nitro+ split across 3 miners. Their ASICs are split (1) 65%-70%, (2) 70%-76%, (3) 78%-88%.

2. Stability appears dependent on mining software used. With ZCash I had well over 2 weeks stable (before an update released or I tweak something). However with XMR they don't seem to be going beyond 24-30 hours (I thought I had them at over a week too however with the same *clocks applied I'm not getting near that lately.)

3. (1) 688-692 Hash. Total 4150 (2) 697-702 Hash. Total 4200 (3) 700-705 Hash. Total 4200

4. My best pulls 780W and worst is 820W.

5. My priority is a little bit of everything. I try to have a happy balance as I believe it's pointless squeezing out an extra 5 hash per card at the cost of another 100W from the wall. Simple not financially beneficial.

6. I personally user Afterburner. I disable Wattman and MSI from start-up to avoid conflict however check the 'apply oc at start up' with MSI. If I change any clocks I restart the computer and have the miner boot with startup.

7. All -96mV. +20%.  (1) has 1300 CC 2125 MC.   (2) has 1300 CC. 2150 MC.   (3) has 1320 CC. 2150 MC.



If you have any questions that you think would be beneficial adding please just ask. Let's work together. Thank you

Are those 8GB models or 4GB ? RAM overclock seems high for 4GB models - I can get at best around 1950 or so with 4GB (Elpida)
For the RX470 Sapphire's I get about 2025 overclock.

I will work with you on that if you wish - but give me some time to do tests...

-mclock 2025
-cclock 1150
-cvddc 950
-mvddc 950

That's my setting for the Sapphire RX470 OC 4GB

I like your idea for a information gathering thread, but you are unclear on your own results. Do you mean your best (3) 700-705 Hash rig you get 780W or does this one draw 820W? I ask as the hash/watt ratio is important for most of us who pay for electricity.

I've put my results in this excel:

https://docs.google.com/spreadsheets/d/1orIghgpuJ_NEHfMCq65FhqitPX_El9U-7rIbyyKRdKE/edit?usp=drivesdk

i see 760 h/s in monero , can i have more information ? how to achieve this speed

Hello,

1. RX 480 Msi Gaming 4GB Hynix Memory,  flashed with Anoraks Bios mod.

2. Core 1205@960mV, Memory 1950@975mV.

3. I have 2 rx470 and one rx480.

4A. At the wall entire system read 450W, Gpuz read 78-85W for RX480 With Monero and 710 h/s, 524w.

4B. With Zec entire system read 480w, Gpuz read 90-94w and 220 h/s.

4C. With ETH entire system read@wall 560W, Gpuz read 96-99w and 28-29 mh/s.

Grettings!!!

I've achieved this speed using a rig with xfx rx480 8g reference gpus where from I've copied the 1750 strap into the 2000 strap. And set core/Mem to 1250/2235 with the config of the mining software.

Mining software used is: ethOS (version 1.1.8 ) with the miner set to sgminer-gm-xmr.

Hope this helps you..

I can confirm that RX 480 8GB Sapphire Nitro+ does get around 750H/s (with Claymore's 751H/s, with Wolf's 760H/s 1-2% of shares are invalid though with this one). I have the core at 1370Mhz and memory at 2250Mhz, only overvolt needed was 19mV for the clock (the clock isn't really necessary, you can get 730-740 just with memory at 2250 and no overvolt). Consumption on one card is around 120W.

The core overclock is stable with Monero mining, benchmarks and so on but it isn't stable when mining Zcash (crashes randomly), you have to add more mV for stability.

In my opinion, using Wattman and no BIOS flash pretty much insures that you'll keep your warranty. The Wattman overclocking software basically overclocks the card at Windows start-up, it has certain limits and it won't be easy to fry the card butif it gets bricked they won't really be able to tell if it was overclocked like that (not 100% sure about this though).

Hi,
Have you try sgminer-gm with this parameter on your rx 480 : -w 4 -g 2 --rawintensity 508

Can you say me if you have better result like 780 - 800 h/s.

Thanks.

same cards, with your settings one card crashes after ~2 hours and freeze all system (but I was getting about 1500 h/s)

now I'm using wattman
2x 480 8GB Sapphire Nitro+
core 1340, 1110
memory 2175, 1000

about 310-320W from wall

Claymore v 9.7
https://i.imgur.com/Y7pTJEz.png

Friend wanted a doubt his would be profitable 5 rx 460 shaphire nitro 4 giga for mining xmr or eth?

1. How many 480's are you working with and which versions?

-10 RX 480. All 8GB Versions. 6 XFX, 4 MSI

2. How stable are your mining rigs?
      How often do they fall over or do you pre-emptively restart them?

-Always stable, never restart, never freeze. This is for both machines.

3. Best and worst hash rate on the machine?

I feel this question should just be your hash rate, I'm not going to guess what the pool is telling me because it fluctuates constantly.

-XFX: 3828h/s. MSI: 2552h/s

4. What is your Power Draw from the wall?

-XFX: ~900  MSI: ~650

5. What is your priority? Power usage? Hash rates? Stability?

-See 3

6. How do you apply your *clocks (with the program / Wattman / Afterburner)?

-Afterburner

7. What are your *clocks? (Core Voltage (mV), Power Limit (%), Core Clock (MHz), Memory Clock (MHz))

-Stock everything except for XFX undervolt at -72, MSI undervolt at -98. If I try to overclock anything both rigs will freeze and crash.

ok i think this is the topic i was looking for :).
I have 4 RX 480 nitro+ 8gb , an old mobo with 4 pci slots , 4 pci risers and 1200w corsair 1200i PSU. i am already trying to mod bios for a week now , modding itself is easy but getting the rig rock stable does not work for me ...

my resultas so far :

started out with base bios and base settings , so i get 640 hash per card so 2550 all together , runs stable for 15 hours ( did not test it longer but it looks really stable ).
then i tried 1500 straps , 1625 straps and last 1750 straps ( seem to be the best for rx480 with samsung memory ). But when was mining with all of these straps in all 4 cards
with basic settings , the rig does only run for a couple of hours. with the 1750 straps and basic settings it run for about 8 hours and crashed then. So for me its hard to believe
that people run theste rigs with 1750 straps on the same cards like i have AND also undervolt the hole thing... it would be nice though if somebody could tell me what i am doing wrong.
i ordered 12 more rx 480 and also some Pro btc 2.0 motherboards , so i can have 6 cards on 1 mobo instead off 4. and hopefulle the mobo makes my rig a bit more stable but i dont think it has someting to do with
stability.

So to make things short
- running base bios and base settings ==> rock stable
- running 1750 timings in new bios and basic settings ==> 8 hours stable max !

- now i am running base bios and changed on 1 card the memory from 2000 to 2100 , running stable for 4 hours now and when its stable for 12 hours , i will apply same setting to seconds card , and so on , so on ...

i will keep u guys posted about my progress.

in the mean time , it would be nice to get some ideas of what i am doing wrong or why is it unstable with 1750 timings and base settings? should i make a script that restarts the miner every 3 hours? like this it can maybe mine stable with high hashrate and low power consumption and not crash the whole rig ...

I am currently mining ZCash. Just wondering, once I have overclocked to a speed that is stable, is it possible to flash it in the bios so that the settings are permanent rather than needing to manually adjust it everytime I reboot esp. on a multiple GPU rig?

I also noticed that when I modified the timing on the Sapphire RX480 OC 8GB version, it is recognized in Windows 10 but it comes up as a (!) and a driver can't seem to be installed. Any ideas ?

Ok so I just tried to put 1750 straps in my first card and after 2 hours it crashed. How do u guys keep it stable? Automatic restart of miner ?

If it's crashing, can be many things: bad risers.. too high overclock, too low undervolt. What volts and clocks are you using?

I've had poor results with overclocking the 4 GB Sapphire Nitro+ 480s. I believe they have slower RAM than the 8 GB version though. Is it stock 2000 Mhz on the 8 GB version ?
I don't think you will be able to overclock to 2100 - maybe try stock setting and see if it is more stable.

I would try a slower GPU clock setting and lower GPU and RAM voltage - I think I had mine running at:

-cclock 1150 -mclock 1850 -mvddc 950 -cvddc 950

Try yours at -mclock 2000 and work from there.

Yes stock BIOS and stock setting run stable.
Stock setting :
CClock 1340 mclock 2000  cvddc 1150 an mvddc 1000

That runs stable. As soon as I higher Mem to 2100 it crashes over a couple of hours mining. If I can not overclock, I really should be able to reduce the power. Otherwise this was a bad investment. I have 4 cards now but I already ordered 12 more. But I ordered ASRock h81 pro btc motherboard as well, maybe that will be better?

-cclock 1200
-mclock 2000
-mvddc 990
-cvddc 990
-powlim 0
-tt 62

gives me stability without pushing any temps too high or hindering performance of other third party apps (browsing, whatever).

max I can get mclock up to is 2100 w/ -mvddc @ 1020

edit: produces an average of 300 Sol/s (Claymore's latest release)

That is for Rx 480 nitro 8gb? Stable?

When I just run with stock BIOS and I undervolt the ccvd with just 50 MV my windows crashed because of AMD driver...

Negative.

(Sapphire) RX480 Nitro+ 4GB. Stable.

I really can't do anything but stock BIOS and settings or windos crashed. I read somewhere that windows 7 Is more stable for rx480... Gona try that

Yeah, I've had a lot of trouble getting memclock past 2000 without paying for it in some way or another. I find it's best just to rely on the best stable settings you can achieve and put it to use in the current(constantly changing) most effective method.

I only run the one 480, along with my old card - a GTX960, which achieves 180 Sol/s, so, 180+300 = not too bad to have running at night/most of the day. I make sure the RX480 doesn't surpass the low 60's (centigrade) - so I don't have to live with the horrible ambience of GPU and Case fans to the point where the dB level in the house WITHOUT a GPU under load becomes 'too quiet'.

I love AMD's whole 'drift-spec' mentality when it comes to their cards, if you know what I mean. But I'm pretty much over the constant over-correction requirements. Even when it boils down to simple gameplay, there are issues I wish I never even had to know existed let alone deal with. The small things I appreciated about nVidia cards have become very clear to me now :P

Still, 300 Sol/s @ 60c for whatever price the 4GB 480s are going for now (pretty damn cheap), I can't complain.

You've switched your physical bios switch over and extracted/backed up/duplicated that BIOS, then rebooted/toggled switch and re-flashed using the alternate BIOS, right? Just checking. Cause I had fcked up the default position (whichever image that's meant to be, the non-powersaving one I guess) - and only really just managed to flash it back to normal.

But my initial BIOS flashing failures were more of a wont display/boot situation, but could've easily just tampered with the wrong thing and bottlenecked myself somewhere.

Yep switched it over so that's OK. The only thing I did was backing up 1 original BIOS from a card, modified it and put it in all 3 other cards... They cant harm no? They are alle the same and have all Samsung memory

Computer name: DESKTOP-L2FB0RQ
Windows version: Windows 10 , 10.0, build: 14393
Windows dir: C:\Windows
Hardware: H61M-D2-B3, Gigabyte Technology Co., Ltd.
CPU: GenuineIntel Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz Intel586, level: 6
4 logical processors, active mask: 15
RAM: 4277653504 bytes total




--------------------------------------------------------------------------------
Crash Dump Analysis
--------------------------------------------------------------------------------

Crash dump directory: C:\Windows\Minidump

Crash dumps are enabled on your computer.

On Mon 6/03/2017 12:51:01 your computer crashed
crash dump file: C:\Windows\Minidump\030617-10906-02.dmp
This was probably caused by the following module: dxgkrnl.sys (dxgkrnl+0x22D0F)
Bugcheck code: 0x100000EA (0xFFFFC70CF0CEE800, 0x0, 0x0, 0x0)
Error: THREAD_STUCK_IN_DEVICE_DRIVER_M
file path: C:\Windows\system32\drivers\dxgkrnl.sys
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: DirectX Graphics Kernel
Bug check description: This indicates that a thread in a device driver is endlessly spinning.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in a standard Microsoft module. Your system configuration may be incorrect. Possibly this problem is caused by another driver on your system that cannot be identified at this time.



On Mon 6/03/2017 12:51:01 your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: atikmdag.sys (atikmdag+0x506F0)
Bugcheck code: 0xEA (0xFFFFC70CF0CEE800, 0x0, 0x0, 0x0)
Error: THREAD_STUCK_IN_DEVICE_DRIVER
file path: C:\Windows\System32\DriverStore\FileRepository\c0306711.inf_amd64_22668ece07e665a6\atikmdag.sys
product: ATI Radeon Family
company: Advanced Micro Devices, Inc.
description: ATI Radeon Kernel Mode Driver
Bug check description: This indicates that a thread in a device driver is endlessly spinning.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: atikmdag.sys (ATI Radeon Kernel Mode Driver, Advanced Micro Devices, Inc.).
Google query: Advanced Micro Devices, Inc. THREAD_STUCK_IN_DEVICE_DRIVER

Which driver do you use ?

16.9.1 but I already tried different ones.

some sapphire nitro+ RX480 4GB with memory strap can get 2200 Mhz memory clock or more

i have 1750 timings in custum bios , cclock is 1200 and cvddc 990 , mclock 2150 and mvddc is 1000 , normally this would crash my windows but i wrote a script that the desktop reboots every
30 minutes, like this i can mine at a good speed, and less power consumtion. and to the chance of crashing the system is much lower ... ok 48 restarts in a day is not so nice , but i think it is worth it

and claymore monero miner stays stable ?

yes, 760-780 H/s

Anyone have much luck with the XFX RX 480 8GB XFX Tuned ?  I got 6 of those on 1000w power supply running stable with stock out of the box OC by XFX using about 850 watt. and getting about 600-630 h/s per card under Windows 10 with claymore or EthOS 1.2 with sg-miner.  I tried doing some overclocking and undervolting in Windows with Wattman but was getting instability.  Trying to find the magic formula to get me over 700 h/s per card without exceeding my power supply. 

Appreciate everyone's input on this thread it was exactly what I'm looking for. Seems like lot of people having success are using RX 480 reference cards.  Is there any difference? Could I use the same custom Bios that is available for Reference cards out there? Will be tinkering with some of the suggestions above tonight.  Thanks

Could you tell me what timings u use? And how much memory and clock? Undervolting? :)

Where can I find the notepad if I may ask

Nice. Is your rom for rx480 for sale? Pm me with price please :)

Can you mod 390 rom's as well, or only 470/480?

could I get a PM on price as well?  I have 5 xfx 480s

Wolf, I have a rx570, hynnix, can you tell me the price of a modded BIOS for this? ty

you do for free? ;D ;D ;D

No, he doesn't. You won't get best bios around for free.