Topic: 7xGPU + Windows // modding AMD video driver is the answer - page 5. (Read 71690 times)

which mod?

Did you run the mod as administrator?

Hello all can someone give me instruction how to make work Both 470/480 with R9 Nano on windows 7? Or 10
Thanks in advance

Thanks for help, everything is ok now and all cards are working with modded BIOS. I've received 30 RX470, but they have different memory chips, three different ones. No need for patch in win 10, just a little patience.

All 5 rigs are running at 150 MH, but power consumption varies, from 780 to 900W, depends of memory chips.

Any info about 8x RX 480 rigs, i Have 8 cards but 7x 480 max working.

Finally got 5x Cards working on Asus z97-A MB. It had no issues detecting the graphic cards, set at 1x *3  and 8x *2. But installing any driver would crash / BSOD on Win 10. Turns out that Crossfire was the culprit for whatever reason and was getting activated by default. Disabling crossfire if I got the time to do it before it crashes, would make it crash! My config was 2 GC's on MB attached directly and the others using  powered risers . 4 Graphic cards on this set up worked without any issues. Addition of the fifth would crash with a garbled image and reboot every time the driver tries to get it self installed. Tried everything, including cycling graphic cards, installing one at a time and so on. And disabling cross fire everytime I had the opportunity to do so I.E 4 graphic cards and then disable cross fire, and then load the fifth => crash. It wasnt an IRQ or Resource issue, as I disabled every god damn onboard device, xchi, Lan, OGC, Sound... Only active items from Bios were PCIE & SATA controller.

Solution was the last resort I had, which was leave only one GC on the MB and use risers for the remaining 4 GC's. Logic was that since one slot will operate on 8x while the other is operating on 1x, it would never try to crossfire. Based on this hunch I proceeded and well, WTF, shit started working like there were no issues. F*ck! Spent 3 days reading everything, applying every patch and mod, installing ReLive drivers and such. So from my experience it was the 8x *2 or Crossfire that was the culprit. Leaving this note here, so it may help others and not end up eating their mining time figuring this out. This may be another factor that you may want to scratch out when troubleshooting. Hope this helps!

Hmm.  Thanks for the info. I think I'll give it another go with W10 enterprise tomorrow instead of pro and report back.

I did inquire from a member in Ethereum forum who got his rig going... but never got an answer back.

However, the Pandaminer at stock uses W10 Enterprise without any obvious "hacks" to registry but it uses RX480Ms.

I suspect the hacks required are probably for non-RX cards.

Any idea what the registry hacks might be with Win10 Enterprise? I want to try building an 8 GPU rig, getting bored with my 7 GPU rigs. 

Also, it depends on the mobo. H81 (Asrock Pro btc 2.0) can't boot with more then 7 cards, i think there is no enough space to address more devices. But i will try disable sata and usb next time.

Yes, read the thread from the start ; )
However it depends on the cards, f.e. 8x290 works on Win10 out-of-the-box.

Thx. Will report later

8 cards and beyond, you need Linux or Win10 Enterprise with some registry hacks.

Checkout Pandaminer.com

With this mod, I successfully launched 7 cards on windows 7. Has anyone tried 8 cards?

Thanks, I thought that patcher is only for latest crimson drivers. I will try it over the weekend and inform here how everything went.
For now they are working on 16.10.2, 150 total for eth using 780W.

Hope that I will make it work on 16.9. because during testing I saw that this version has absolutely best power consumption.

just ask, do you use cpu miner too? during gpu mining?
because i want to use my cpu to mining too, so i can get double profit.

which is better cpu for mining ?

16.10.x work without patch too, not sure about 16.11.x

Use 16.9.1 drivers, or atikmdag-patcher-1.4.4 for other versions.

Afaik you need special driver for BIOS-modded 470 cards.

Hi, I'm having troubles with win 10 as well.
I've tried a bunch of different combinations, but I'm not able to run 6x470 with modded BIOS, only 4 of them are working.

On default BIOS everything is ok, but crimson 16.12.2 can't recognize modded BIOS, so I had to downgrade drivers.
I'm trying a couple of drivers, but all with the same problem, only 4 with modded bios can run.

Any advice would be highly appreciated.