airsick mobs are nutty.
I just got this mobo

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157681

 99 usd 30 rebate = 69 usd.  I got it to replace the mob flooded at the solar array.

So I wanted to run  windows 7  and I got the usb mouse won't work bug.  it works once you load all the  drivers on the  mobo cd/dvd

so I go look around the house and find both a keyboard and a mouse with p2 jacks not usb jacks   just to get to load the mobo drivers.

spent an extra hour last night looking for the   ps2 gear.

the board is now working with 2 msi rx 470s'

this was a cheap build.  2 cards on sale 370 usd. the mobo on sale 69 usd.

so cost was  439.   all other parts were salvaged from the array mobo.  the ram the ssd the cpu.

So I am up to just under 400 mh.
I am happy I have chosen to be high on btc vs eth or anything else.  I have just been converting  all eth to btc at the moment. I also sold off a bit of btc to shore up my cash share of the game.


I am kind of busy helping my neighbor fix up his garage.  we tore out all old insulation put in new.  then put in decent tongue in groove  pine for the walls. next we will put up shelves.  We should finish the job on this Friday.

That's an interesting summary. I'm sure you are right in that the board temps on the optimizer would be lower than the board temps on the J4bberwock 4K board under load due to the extra copper. I just haven't had experience or reports of even a single yellowed plug on the 4K boards even under heavy loads (if anyone has one please post up!), and only occasionally on high-draw high-ambient 2880W boards as yours did with your modified cooling fans in a USPS shipping box and mine running single cables to Neptune cubes (which were prone to starting fires for their inadequate design).  I'm going to see if I can melt a 4K board with a single DPS-2500 loaded as high as I can before hitting thermal shut-down to see if there really is a safe limit on them, because my experience is there is no safety concern with them whatsoever, and the hundreds (or thousands?) of customers with 4K boards in their hands from myself and J4bberwock would confirm that.  Your report that it felt " a bit warmer to the touch." in this worst-case-scenario would seem to agree with that as well, and yet you still seem inclined to push the Optimizer boards for "safety".  To each their own, it is a free market, but I feel that you are misleading the mining population with your assessment.  Do you have a sales, commission or referral deal with Optimizer by chance?

I found that the you have to use the usb risers that are powered in the back of the usb riser board for the 12x pcie slots on the motherboard instead of the flex cables.  I love the flex cables, but they often only work on the 1x pcie slots.  See if this works for you and let me know.
 

Holy Fudge,

Got my 2 replacement (one today and one yesturday).

Plug my new MSI yesturday ... tweak the Bios ... Start mining and it crashed after 1 hour ... restart the process did some tweak and crashes after 8 hours. I managed to get 40 hours uptime with 4 cards.

Now... I lost the control again. I'm doing clean driver un-install and re-install and i'm getting Code 43 on a card now.

I start mining process and I can see with memory the process use if it's fine or not. If i don't get to 300megs it's a no go ... Most of time now, the process just hang and that card got a Code 43 when I reboot.

This is impressive, hard to believe it's that hard to run 6 freaking GPU without troubles.

I got my Asus replacement, I'm starting to believe is it not a GPU issue but my MOBO.

I will do futher testing. I got another H81 PRO BTC. I will try it if it doesn't work anymore.

EDIT: I think i'm gonna have to re-install win10 again, I cannot remove the driver even with the cleanup exe from AMD. Win 10 re-install the latest driver after the cleanup and even if I manually remove the device and select delete the driver. This is quite Windows ;-)

Hello;
I have installed 6 graphic cards on Windows 7 x64. Four graphic cards work well. But the other two cards dont work. I use USB 3.0 risers with power. I couldnt figure the problem out. Does anyone has any information about it ?

wish I had a dollar for every time I skipped a word or two.

Or, since it's taking a billion hours to get all the sheathed cables assembled (have I mentioned before that sheathing sucks? Seriously doubles or triples total assembly time) I'll get orders shipped on Monday. Gotta leave for errands and burgers in an hour and that's not enough time to finish cables, let alone finish board assembly.

Please communicate as much as possible here so others can learn.  I will swap ROMS etc by PM.


Most of my ROMs are meant for mass use at my farm and run stable.  I would recommend letting me get a couple together like the Reference ROMs and let you try it out and see what you think.  Give me a day to put that one together. 

The ROMs I do I typically keep to myself but I am angry about the way people are treated on this forum by others. 

Sorry to read this.

Yeah I never like asus or gigabyte gpus.

Powercolor
Msi
Sapphire
Xfx

Pretty good luck

The Asus cards use a custom VRM chip, which I've posted about earlier in this thread.  The only work-around I've found is reducing VDDCI along with VDDC.
I'm using the 1425Mhz strap at 1030/1875 and get a bit over 26Mh/s.

PCBs and all components have arrived. I spent today verifying everything and setting up the pick-and-place for bulk manufacture. I ran one off to test calibrations, completed assembly on it and it's running right now with about 10A of output current on 5V with no trouble.

Tomorrow I'll do all the surface-mount for the batch and start on through-hole.

I got started cutting wires to run out cables last week but ran out of wire; my reorder has arrived. So tomorrow I'll also be finishing up cutting wire and start cable manufacture. I've got some better heatshrink than I had available for the test cables MarkAz got, which means the production batch should come out better. As of right now there doesn't look to be any reason I can't get initial orders shipped out Friday.

I bought a few more of these RX cards and since I exceed more than 4 GPUs in Windows 7, I had to use that 7GPU Mod Registry hack, however it doesn't seem to work with the newest drivers 16.9.2

It worked perfectly fine running 6 - R9 280X on version 15.7.

The cards are recognized in Windows Drivers however, I can't get more than 5 GPUs to run in one system. Whats everyone been doing?

I think the best card now are Sapphires and Asus, in terms of quality of components and field feedback.

For quite sometime, I have avoided Powercolor and XFX ...

May I point out this:




We are at -3 %  for the next jump

and coins opened Oct at 612 usd  they are now 639 usd

So with  the breakeven luck of 100%  and the numbers above Oct 2016 has been excellent month so far.

If you are referring to WattMan, it's built into the AMD driver: Gaming -> Global Settings -> Global WattMan.