[1 BTC BOUNTY CLAIMED!] Get 6 radeon 7970 installing and mining in Windows

[Cablez]

You know you would make much more coin if you just left it at 5 cards and setup a new system for another 5.  Not being an ass, just saying your time and hash time are more important than ultimate density.

[melmo]

I can give you a BIOS for 7970 cards, already memory underclocked (150 Mhz) and undervolted (1.09V) and go to the dark side.
You will still need to flash the BIOS yourself.

I'd be interested in this.  Any chance you can share?

Thanks!

[Tejsei3]

If you lived in GA Id be willing to come over and tweak around with you on this. Got tons of powered risers, X58 boards/cpus, and other stuff sitting around that we could test out. Good luck

EDIT:

After doing com research on your motherboard/CPU setup I think I may have figured out what is going on. The board you have is using a mix between PCI-E 3.0 and 2.0. Now in order to get full use of all these ports you generally need a IvyBridge 22nm CPU, which the G530 is not. MSI is not putting anything about this on their site but if you go over to the Gigabyte site they make sure to put this in their specs:

http://www.gigabyte.us/products/product-page.aspx?pid=4139#sp
http://i20.photobucket.com/albums/b230/dtmcnamara/PCI_zpsff652aef.png

My suggestion would be to find someone with an IvyBridge CPU and test this out. This is just a theory, but I know with my Z77 board and my 2700K that no matter what I have tried I cannot get all my PCIe slots to work. Let me know if this fixes the problem

Would a G1610 or G1610T do the trick? I also have a Z77A-G45 and aim to load 6 cards on Windows or BAMT. Running just 3 cards now but if the processor is the key I want to make sure I have the right one. Currently running a G530.

[philips]

I can give you a BIOS for 7970 cards, already memory underclocked (150 Mhz) and undervolted (1.09V) and go to the dark side.
You will still need to flash the BIOS yourself.

I'd be interested in this.  Any chance you can share?

Thanks!

Share the bios? Here you go: 7970modbios.zip

Use the latest ATIFLASH for a successful flash.
Is a generic AMD bios I modified (with a hexeditor) for all my 7970 cards, using them for months.
I can not guarantee that is gonna work for all 7970 cards, so far I flashed only Sapphire, XFX and MSI cards.

Use the -f parameter to force the flash and of course make a backup of your original BIOS.

[ssateneth]

I live up in northern wisconsin. There's practically nobody up here thats literate in computer hardware and/or bitcoins. I appreciate the offer of the house call though. Going to give this a break for tonight. I replaced 2 5850's for 7970's in rig #6, and temporarily (hopefully) opted for a 5970 in place of 7970 #6 in rig #7. Current iteration of the basement hardware clocking in at ~21.5 GHash/sec. All GPU cores at 1.0 volt except for a pesky Gigabyte 5850 voltage locked at somewhere between 1.088-1.2+ volts.

[Jude Austin]

I live up in northern wisconsin. There's practically nobody up here thats literate in computer hardware and/or bitcoins. I appreciate the offer of the house call though. Going to give this a break for tonight. I replaced 2 5850's for 7970's in rig #6, and temporarily (hopefully) opted for a 5970 in place of 7970 #6 in rig #7. Current iteration of the basement hardware clocking in at ~21.5 GHash/sec. All GPU cores at 1.0 volt except for a pesky Gigabyte 5850 voltage locked at somewhere between 1.088-1.2+ volts.

Nice farm!

[loskme]

I live up in northern wisconsin. There's practically nobody up here thats literate in computer hardware and/or bitcoins. I appreciate the offer of the house call though. Going to give this a break for tonight. I replaced 2 5850's for 7970's in rig #6, and temporarily (hopefully) opted for a 5970 in place of 7970 #6 in rig #7. Current iteration of the basement hardware clocking in at ~21.5 GHash/sec. All GPU cores at 1.0 volt except for a pesky Gigabyte 5850 voltage locked at somewhere between 1.088-1.2+ volts.

Hello, please tell me: 1. how much power the power supply in your farm 6x7970?
2. Os  Windows 7 x64?

I undervolt my cards. Doing 5 7970 at stock volts aused my power supply to emit a burning rubber smell, likely pulling about 1450 watts AC. I undervolt to 1v and adjust core freq to compensate and its more like ~950 watts AC. Rosewill lightning 1300, seasonic x1250, ocz zx 1250, spi magna pro gold 1200, etc

2. yes

[drlukacs]

[
Is a generic AMD bios I modified (with a hexeditor) for all my 7970 cards, using them for months.

Would you please elaborate on how you modified it using hexeditor, and in particular, what offsets control voltage, etc.?

Many thanks in advance!

[philips]

[
Is a generic AMD bios I modified (with a hexeditor) for all my 7970 cards, using them for months.

Would you please elaborate on how you modified it using hexeditor, and in particular, what offsets control voltage, etc.?

Many thanks in advance!

Although not exactly what I did, this was the starting point:
http://www.overclock.net/t/1196856/official-amd-radeon-hd-7950-7970-7990-owners-thread/4200#post_16495299

[drlukacs]

Although not exactly what I did, this was the starting point:
http://www.overclock.net/t/1196856/official-amd-radeon-hd-7950-7970-7990-owners-thread/4200#post_16495299

How did you lower the voltage to 1.09V? It it this line?

000b1f0: 0000 0000 b603 0000 0000 4204 0000 0000


I was also wondering if you needed to do something with the checksum?

[philips]

Cant really say, sorry.
It took me a while to figure it out even back then. Glad is over, my head still hurts.

If all you wanna do is lower the voltage to 1.09V just download a 7950 BIOS (a generic one or similar to your card) from Techpowerup and flash that one.

No checksum and stuff, just force the flash.

(I also have one edited for 1.09V and 300Mhz, just in case)

[drlukacs]

No checksum and stuff, just force the flash.

(I also have one edited for 1.09V and 300Mhz, just in case)

Thanks!

[lewlzminer]

just wondering if 5x7950 + 1x 7870 works as well? or maybe different vendors of 7950 work too?
i remember some1 told me he had running 6x7950 from different vendors, i ordered new cards but this will take a week

[txmasut]

Just messaged ssateneth with an answer that should solve his problems.

[ssateneth]

Got a promising PM from the person above me, currently in progress of teamviewer and brainstorming possible windows 7 solutions. He has a confirmed solution, but only for windows 8. If we cant get it working with W7, I'll resort to W8, and if it works, and because it's still windows, he'll win the bounty

And yes, I'll share the solution. I imagine a lot of people are really frustrated with this problem too.

[bitcoiner49er]

I live up in northern wisconsin. There's practically nobody up here thats literate in computer hardware and/or bitcoins. I appreciate the offer of the house call though. Going to give this a break for tonight. I replaced 2 5850's for 7970's in rig #6, and temporarily (hopefully) opted for a 5970 in place of 7970 #6 in rig #7. Current iteration of the basement hardware clocking in at ~21.5 GHash/sec. All GPU cores at 1.0 volt except for a pesky Gigabyte 5850 voltage locked at somewhere between 1.088-1.2+ volts.

+1 for up nort'

I grew up in Eagle River, and yes there are very few computer tech's around.

[ssateneth]

The bounty is now claimed by txmasut! Congrats!

I now have 6 x 7970 working and mining in Windows!



Speeds are low because I'm undervolting. Can easily push 650-720+ mhash each if I chose to do stock volts. I spose all of you want the solution, right?

[philips]

They sure look nice, al six of them in a row
How low are you undervolting?
I can get 3200 with only 5 cards, also undervolting.

Happy mining!

[jasinlee]

Nice yes get us that fix.

[milo]

What was the fix?