Got 96 nano's running for weeks with my rom. No issues. The issues start when i go lower than -125mV.

Believe me, you can't imagine how much testing i've done...


Well, you've got a point there. But like i've said, secondary bios switch. The risk to screw one isn't "that" high. If you go to low on the volts it will just crash the display driver and reset itself. So no risk there.
If you "OVER"volt, then yeah, you could risk screwing it up.

170Mh/s, 6cards, 1500watt, true. Those cards are getting pushed, i haven't mentioned that i upped the Powertune to 50 which will also consume some extra energy.
Bumping the cards from 1000 core clock to 1050 core clock will gain you an easy 10Mh/s at only 60-70 watt extra (Complete rig)

Again, my power draw is all from the wall. So Motherboard, cpu, Memory, 6 cards that have to get power, 6 risers that all need some power.

If i do this test on 1 card, directly seated into the PCI slot (which i have done) the power draw is A LOT less.

I haven't really calculated on this to happen either. But it's still okay

Yes indeed, it didn't drop very hard.
Although. When using a stress program like 3DMark the memory controller will be using A LOT more of energy, because basically the memory will be used :p

When mining Ethereum, or any other algo, the memory on Fiji isn't really being used at it's fullest. Well, Almost not.

So cranking that down to -100mV was basically logical for me to do as it's not needed.

(-100mV will still be perfect for the HBM mem to run on 500clock at full load) "Stress test in 3DMark".



You could create one

I believe there are plenty of Hawaii tutorials out there :p

if you have questions, just ask, no worries!



Thx!
Well i got a nice discount because i bought in bulk :p

Well, it's probably the same as like i've done.
Just different numbers.

I believe i have seen an Hawaii Bios Editor somewhere. Just don't know where. So that could be easy to do.

Dunno for Tonga though.

Domain is down, all links here are down.

I put everything i shared here and in other threads (kind of) in a small package.

Link: - Here -


Rom update for Zcash
Zcash Nano Rom  

This one is heavy, you'll need to have a killer nano to be able to handle this.
Link: Here
Reduced core voltage, raised memory voltage (which is needed)


Second one: A little softer

Link: Here
No reduced core voltage, increased memory voltage (+25mV)
Stock memory clock is 550 with the option to raise to 600max.

Have fun!


Rom update
For more information check my post regarding this.
Link : -Here-


Small update (got a pm from someone with issues.)
For those with problems, this package "here" includes -106mV, -112mV, -118mV and -125mV memory clock.
Core clock is still 800 stock, memclock 300, core voltage -100.

If you still have problems with one of these roms, pump up your core voltage (+6mV), some cards just won't do -100mV with a monitor attached.


New Update

Details rom usage.
---------------
Ethereum tests:

134 Mh/s 140 Mh/s @ 2.25A, 495watt (6 Cards) stock settings rom

185 Mh/s @ 4.8A, 1050 watt (6 Cards) 1020 Core, 300 Mem


Details package
---------------
-175mV(memory) rom
-200mV(memory) rom (only for the silicon lottery winners!)
Atiflash (command line flash tool)
AtiWinFlash (Gui version)
Readme.txt


Details ROMs
-----------
Core voltage is set at -100mV
You can go lower with software like afterburner.
Do this in steps. F.e. +6mV, if stable, try +12mV.. and so on..

I noticed that -100mV is the most stable for all cards (i have 100 so i know..)
Some will even do -125mV without issues.

Memory Voltage first rom is set at -175mV
Works perfectly when mining Ethereum, other more memory intensive algo's could be a problem though.

Memory Voltage second rom is set at -200mV
This will work just fine with this rom when mining Ethereum or any other algo that isn't so memory intensive
Please try the -175mV one first before you try the -200mV one, it's even better to try the -125mV one to see if your system is stable or not!
Link for the -125 package is on top in the last update.

Core clock is set at 800 stock for both rome but can easily be raised to 1000 or higher.
Memory Clock is set at 300 stock, also on both roms, this can also be raised but i would advice not to. IT has not point anyway....


AtiFlash.exe
------------
I use this one because i just like it and has never given me any issues.
It is NOT possible to use a version of atiflash when your system is loaded with a bootable drive (ex. Win 98 USBboot)

Steps:
1. Unpack everything to a folder of your choice.
2. Run cmd as administrator, go to where your folder is located.
3. To flash enter atiflash -p -f 0 DPM-200mV.rom, wait until atiflash tells you to restart.

!!!: Do NOT have HWiNFO , GPU-Z, MSI AB, etc running in the background when flashing card!

AtiWinflash.exe
--------------
Run as Administrator.
Easy does it...


References
--------------
OCN Fiji Bios Editing


Issues?
-------
I would advice everyone, after you flash your card(s) to remove your driver with DDU
and reinstall your driver. This always works! It takes some more time but it's worth it.

You can however just restart (don't just restart, completely shut down your system) "Power off!",
go to crimson preferences and reset everything.

Remove any profiles you have in afterburner (Program Files(x86) - MSI Afterburner - Profiles)
Remove settings from Trixx
Idem for any other OC tools.

You can always contact me with questions!

Greetings

Heliox.


Link: Here


Some old info and blabla:

Hey,

As we all know, the R9 Nano is one of the most energy efficient GPU's out there at this moment.

In the past months i've done numerous of tests on how to get this card as stable and as power efficient as possible.

I've been thinking about sharing my results and tests and came to the conclusion to keep it short and as helpful as possible for every Nano owner out there.

I modded my Sapphire Nano rom to the point that it almost dropped 50% in power usage at the same speed  

And i would like to share that.

Please be careful. (you have a secondary bios switch, so you can always switch back)



For all the *nix users out there. This might be very interesting for you guys because i know what a hassle it is to change voltage in linux. Yeah.. not...

Also, if you want to flash in Linux, that isn't possible right now. You'll need Windows. (And not a bootable version! Won't work on Fiji..)


Enjoy!

You can turn that off.

open a command prompt window and enter this


Voila

The app included works nicely as well. (obviously :p)

The power meter function is very fancy. 

Btw.

Over 300 Cards/configs already!

Keep em coming guys!

Yeah i know, i seriously need to do an upgrade....




Those 14 Inactive cards are either Unrealistic or incomplete submissions...

Edimax Smartplug

http://www.edimax.nl/edimax/merchandise/merchandise_detail/data/edimax/nl/home_automation_smart_plug/sp-1101w/
Without Power Meter

http://www.edimax.nl/edimax/merchandise/merchandise_detail/data/edimax/nl/home_automation_smart_plug/sp-2101w/
With Power Meter (the ones i've got)

http://tweakers.net/pricewatch/428737/edimax-smart-plug-switch-with-power-meter.html
Some prices (Europe)

I haven't noticed any decrease in speed with my Nano's, neither on my 390's.

Maybe when the DAG reaches +2GB. But i doubt it..

These are the ones i've got to remotely reboot. Although that i never need to do that.



Not cheap but they work fantastically!

I have a "huge" todo list.. just don't know where to start first.

Haha, it's been around for a while now.

Need to update it as soon as possible though..

It does, my windows setup does as well.

Is a driver thing, not an OS thing.

Anyway, it should work without a monitor attached.

There.. exactly what i was talking about


As always, your work is much appreciated (by everyone) Wolf!


Greetings

I would ask the dev for that. Or a respected member like Wolf.

I wouldn't trust anyone else with exe's.

Got a good Hawaii one if you want..

Better get them @ Amazon.

Cheaper, ships worldwide without a hassle (and fast!)

I could do that from one of my nano's yes. Fury not anymore, i sold those.



I'm sure a Fury can beat any hawaii card. If you OC it high enough that is

Same for Hawaii, if you run a high end hawaii card at stock clocks, and you run a fury x at stock clocks it'll go faster.

If you oc that hawaii card, it'll beat that fury. Obviously....

Working perfectly :-)

I am the dev :p

I can implement a rating yes.

There is already an option to leave a comment on each card/config.

Again, check the clocks. The windows 7 input has stock clocks. The Windows 10 input has a strong OC (higher core clocks).

Also, i'm running windows 10, tried on 7 and 8.1 as well, windows 10 came out best for me.

Greetings

Check the clocks...

+ it's users input, they can basically input whatever they want. I do however check it but i seem to overlook things sometimes..

In this case it seems to be alright i guess..

If the profitability goes down to a point where you're losing money there's still the option of selling the cards.

Most people here seem to forget that..