[UPDATE] RX480 (Ref) 31+Mh, Custom Rom - VDDC OFFSET + Custom timing

[vanlong]

Hello all
i have a MSI RX 480 armor 4g but is that Hynix Vram. Now speed is 27Mhs, but temp very hot, 72  °C
Can you edit help me this rom. i want speed up to 29 and temp dow ~65 °C  or lower.
I using msi afterburner to adjust.

Thank you so much

This is .rom file i already backup from CPUZ

https://mega.nz/#!DlZADaJC!pJLAxSQDJ2jBQqnnMI3vLrbv5NRfIAIXuw8FcxdX8x4

http://2.pik.vn/2017f0c87444-6458-4917-b46e-fa97754ecf01.jpg

[1714326713]

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[Andy NIU]

20 payments so far.. 180 miners left.... Auction winners will be notified immediately the last miner is paid for.

Mary NIU.                                                                                Today at 08:10

At 23:59 hours of 31st of July2017, we are going to be deploying 100 new Antminer S9 and 100 Antminer L3+ to cushion any unforeseen market instability that comes with the impending Bitcoin fork. This measure is being put in place to protect our miners investment and also preserve the trust you all have placed on us.

The deployed 100 Antminer S9 and 100 Antminer L3+ miners will be removed from the network, decommissioned and auctioned off at a discount from 00:01 hours of the 4th of august 2017.

Cost:
Antminer S9 (including its PSU): 22 LTC
Antminer L3+ (including its PSU): 25 LTC

To take advantage of this opportunity; make payments to any of the following LTC addresses and post ur transaction ID here afterwards.

LPAT1ivKBpFkT1mM4Lx2nHiamiXpEFsABQ
LRCfzMV5tUjzWDknZTki44JaxQKyL12X5G
LKHYrFxFX6rQpUvtiFJ6vvLwM8qwbBSqKE
LMGKkYGhKGQ3paELmCHkfJTwXNRFPRAZ8k
LPmUWDV88gQTCxnoZ9Abo34t19pEzZ2Xzg
La6Ya7XMEhyUUq4NLBG3hEkkEDDy54DBLe
LLNtNuy61ZY1iNM2nAH7z8dSLm7ZQgFbrx
LX8csuon9mgL5PMXU8nNbxV2DmVbt1QoR4

For a speedy audit of auction winners, each address will only accept payments for 25 Miners.
Note: Auction starts immediately. This is a first pay, first served auction, your payment will be refunded if your funds come after the first 200 payments.

Shipping:
1. For an auction of 1 to 3 miners add 7 LTC to your payment.
2. For an auction of 4 to 10 miners add 14 LTC to your payment.
3. For an auction of 10 miners and above add 40 LTC to your payment.
(To host the miners on the cloud, please don't include the shipping cost in your payment)

[agtprvctr]

I have a rig of 6 Dell RX480 reference cards, and when I flash the BIOS in the OP I get the Code 43. I've tried old Catalyst 16 drivers as well as 17.7.1, both with BIOS signature patched by atikmdag-patcher, but the card I flash refuses to work (detected in device manager but Code 43) until I flash back to stock. Another potentially related issue - when I tried using PolarisBiosEditor 1.4 to create a modded BIOS myself, the memory speed labels seem like random numbers and not normal speed numbers that I see in tutorials. Any help would be greatly appreciated and ETH donations considered.

Screenshot of PolarisBiosEditor: https://www.dropbox.com/s/ein29jlupex4hk3/BIOS%20Editor%20SS.png?dl=0
Stock BIOS: https://www.dropbox.com/s/6qnkb6dwzufv7gd/stock0.rom?dl=0

[speedyb]

please if anyone could help i am trying to get a rom for powercolor red devil samsung memory v1
have tried editing it amonsat other things but cant seem to get good hashrate. would greatly appreacate as i have 2cards id like to get what i can from

[aimer1488]

What to do? i got 6 shapphire nitros 480s orderd . Better get 480 ref cards and some coolers and wait for modded rom for them instead of the nitros?

[justoiurii]

VDDC Offset + Basic Custom timing
------------------
Here's a nice update for those who have Reference cards.
In the package included, i've put 4 roms with VDDC offset.

1. -50mV
2. -69mV
3. -81mV
4. -100mV

You can of course adjust these however you want, if you want to have an even tighter undervolt you can search the rom for this --> "8D 00 F8(-50)00" and replace the F8 part with EE(-112) for example.

These roms also have a custom timing included. It's a basic one but it will give you a very high increase for XMR.

Greetings and have fun!

Link: Here



Relive 16.12 fix
------------------
]Atikmdag Patcher


So uhm, yeah, i managed to get my custom rom running on Windows 10 by bypassing that aweful signature check :p
(Kudo's to Gupsterg and Lordkag for that)
Decided to create a new thread because my other threads are becoming a serious mess..

Reason why using claymore's,  couldn't directly get Genoil's to detect my card   My apologies for that..


Results.

First run (no mod): 24Mh+ : Core clock 1275, Mem Clock 2000

https://s9.postimg.org/7ty7g1rqn/Stock_Test_Run.png

Larger image: Here



Second run (modded): 28Mh : Same clocks, so: 1275, 2000

https://s10.postimg.org/bl4qqh6xl/mem_Edit_Testrun1.png

Larger image: Here



Next run (still modded): 30.5 - 31Mh : Lowered core to 1192 and raised memory to the (for now) max of 2250.

https://s10.postimg.org/wg35868nt/mem_Edit_Testrun_Final.png

Larger image: Here



Then, for my final(for now) run: 31.5-32Mh : Raised core to 1220 and raised memory to 2275  

https://s9.postimg.org/t4v9d80y7/mem_Edit_Testrun_Final2.png

Larger image: Here



Will be doing more tests later, i'm sure i'll be able to go over 32Mh.
Great thing about this, when i ran the first testrun with stock clocks, card was at around 60 degrees and no abnormal fan speed.

Overall, awesome card


Power usage tests will follow later when i'm done tweaking my rom to the sweet spot


Greetings!



Edit:

Links:

RX480-32MhOTB
RX480-30MhOTB
480LowEnergyOK
RX480Mod.zip

Hi, bro. Sorry for the question: i'm newbie. What driver you recommend to use with your settings. Presently I'm using newest RX480 driver and result 160 mhs/s for the 6 gpu for ether minig on nanopool. Thanks in advance)))

[MichaelMiner]

Sorry for such a basic question, but is the lastest version of the ROM the one I have found linked everywhere from 2016??

Thanks!!

I did read through a bunch of reference, but never found a newer version.

[NewbieMiner17]

Hey guys,

Does anyone here have the Rom for RX480 Sapphire Nitro+ 4GB? Have only seen the 8GB roms here

Thanks in advance.

[john1010]

I've been using this mod for almost a year and have no problem yet except for high temp for my xfx rx 480 8gb, but when i add mix amd cards using b250 mining expert problem arise.. Is anyone of you has an solution for this problem, Im using Adrenalin driver + Claymore 10.3 and windows 10 x64 1709build  (latest) I have no access now to afterburn because controling mem and core clock is disable, also the fan seetings and under volting... I hope someone here will share his idea for this problem.

Cheers!!

[z0n0]

Need some info pls.
As far as I know, Samsung memory is the best on RX cards.
Well, I have a RX480 XFX GTR 8gb Samsung and I get "only" 29MH with 1500/1625/1750 timings.
How can I improve my hash speed?
Thanks.

[NKSoft]

... True. Actually, what You see in WattTool as memory voltage is MINIMAL GPU CORE VOLTAGE FOR THIS MEM FREQ. So if You set:
GPU 1120 @ 850mV
MEM 2050@1000 mV

You will get a GPU voltage of 1000mV.

Hello! Thank you so much for this explanation!!! But now I have questions:
1. So, is it an error in WattTool (and OverdriveNtool)?
2. Does it apply to Polaris Bios Editor(s) also???
3. In the later posts I've read that "You can't lower the memory voltage." Then why in all tools there are memory voltage table?
4. What table actually change WattTool (overdriveNtool) and Afterburner, is it changed inside GPU(maybe, via driver) or in some driver software config which driver uses to make settings in the GPU, whatever?
Please, explain more detailed or point me to the info. Thanks again!

[KGSGRP.ITA]

My operating system:
Win 10 x64
GPU: AMD 480 8gb as in this picture https://ibb.co/HCpdWqQ
video driver: Adrenalin 2020 ver. 20.4.2
Miner: lolMiner 1.6

without making any changes "lolMiner 1.6" gives me 22.23 MH/s on ETH.
All right for this GPU? Or can I do something to get better performance?