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1  Alternate cryptocurrencies / Mining (Altcoins) / How to flash AMD RX-cards from a USB-stick? on: January 22, 2018, 12:12:54 PM
Hi, i have a bunch of SMOS-riggs all equipped with matching RX570 cards. Now i have taken the time to optimize the bios for my cards, and like to flash all of them. But i cant find a DOS-based ATI-Winflash version that support RX-cards? How do you normally solve this? All i want i a bootable usb-stick with my ROM that i can insert in all my rigs and convenient flash all cards.
2  Alternate cryptocurrencies / Mining (Altcoins) / Help to get up to 12 gpus working on HP DL580 G7 server board on: January 15, 2018, 10:47:37 PM
Hi, i just got myself a DL580 G7 to use as a platform for my new gpu mining rig, but i can't get more than 1 gpu (rx570) to work simultaneously.

My first guess was that there is a software bios setting for this, but i can't find such?

Any ideas? I'm using SMOS, 1 card works great.

The gpus and the risers all worked well in another system later. I really hope someone can point me in the right direction... All help is appreciated!

My setup
HP PROLIANT DL580 G7 4U RACK SERVER 4x E7-8837, 16GB, P410i/256MB, 2x 146GB, DVD
4x 1200W HP POWER SUPPLY (was planning to use 2 for system and 2 separately for gpu's)
2x Parallel Miner X7 BREAKOUT BOARD ADAPTER (12x 6pin PCI-E)
24x 24 inch 16AWG 6 Pin Male to 6 Pin Male PCIE Power Cable
12x 18AWG PCI-E 6pin to Dual 8-pin Y-Splitter Extension Cable 2X (6+2pin) Cable. 6in each side
12x 008S usb3 riser
12x Gigabyte AORUS Radeon RX 570 4G
Usb with SimpleMiner OS

This is what i found in several manuals, according to this i should get at least 4 gpus running? Is there a way to get 12 (with expansion board)?


3  Alternate cryptocurrencies / Mining (Altcoins) / Tip: 270 "non-x" @ 490Kh/s = 0,33W / Khs on: February 12, 2014, 03:04:29 PM
Just wanted to share my latest rig that turned out pretty well after some tweaks.

  • 6 x Asus R9 270 DC2 @ 1135/1500
    Gigabyte 990FX AM3
    2GB DDR3
    Sempron 145
    Corsair CX750 750W
    Fractal R2 750W
    6x x1->x16 powerd risers
    USB-stick with BAMT 1.4.1 "honeybee"

2940Kh/s @ 975W (Whole system)= 0,33W / Khs

Compare to my other rig with 3x280x
2160Kh/s @ 910W (Whole system) = 0,42 / Khs

I belive the 270's "non-x" are great value right now, u can squeeze almost 500kh/s (475-490) from them for price (210$ in Sweden with BF4) of the 280x (385$).
My kill a watt-adapter measure's values from 940-980W @ wall on 100% load. I downclocked the CPU and no connected fans.
4  Alternate cryptocurrencies / Mining (Altcoins) / Help with balancing 2x PSU on a miner with 6x R9 270 on: February 09, 2014, 09:43:38 PM
Hey, have built a new rig with the following components:

Gigabyte GA-990FXA-UD3
1 x 750W 80 + Gold (2 x 12V 30amp rails
1 x 1000W 80 + Gold (4 x 12V 18amp rails)
6 x ASUS Radeon R9 270 OC
Add2PSU adapter

Have now built it together with 6 powered risers x1-> x16. But I've been thinking about how I should balance the PSU's. Somewhere I read that if you run with 2 PSU so should you run 6pin + molex on risers from the same PSU for it to become stable. So on my rig I run as follows, 3x6pin + 3xMOLEX on both and motherboard at No. 1. The computer will boot up fine, all 6 cards found in BAMT 1.4 so all good so far, but when I start the mining, PSU 2 shuts off and screen goes black. I guess it depends on the cards draws to much power from the motherboard to the PSU one overloaded?

Here is a picture from my initial configuration

I have tried the following without success:
*Changing place between PSU 1 & PSU 2
*All 6 x 6pin from PSU 2 and the rest on PSU 1.
*All 6 x 6pin from PSU 1 and the rest on PSU 2.
*2+4 / 4+2 and so on. All the same problem.
*As a final attempt i cut the 12V lines on the powered risers to ensure that the cards didnt draw to much from the motherboard (as decribed on link #1).

I have googled ALOT and browsed the forums, and there are some usefull information here but i cant make it work anyhow. I guess it all about balancing the power over the rails.

#1 -
#2 -

Please let me know if you have any ideas!
5  Alternate cryptocurrencies / Mining (Altcoins) / Need advice on motherboard for 5-6 pci-e slots FM2/AM3/s1150 on: January 31, 2014, 07:15:07 PM
Can anyone give me advice on a nice 5 or 6 slot AM3/s1150 mobo? No mods requeird to run and preferably with extra power for pci-e lanes. I prefer also to use BAMT.

I have read lots of other threads but it seems to be a jungle... Thank you very much in advance!
6  Alternate cryptocurrencies / Altcoin Discussion / LTC mining, GPU to Memory ratio? on: May 14, 2013, 10:54:40 AM
Hi, i'am trying to optimize my new rig, right now im getting about 530Kh/s per card (7950's). I have read alot and trying to find the best settings, and once and for all, does LTC mining benefit from memory oc?

I have tried to following clock settings to find the "sweet spot" aka ratio between gpu and memory clock (0.57-0.60???)
Theese are my results so far:

825 / 1650 = 478 Kh/s (ratio 0,50)
850 / 1650 = 482
875 / 1650 = 501
900 / 1650 = 505
925 / 1650 = 510
950 / 1650 = 517
975 / 1650 = 525
1000 / 1650 = 529 (ratio 0,60)

No sweetspot found...

This is my bat file:
cgminer.exe --scrypt -o stratum+tcp:// -u xxx -p xxx --shaders 1792 --intensity 20 --worksize 128 -g 1 --auto-fan --gpu-engine 1000 --gpu-memclock 1500 --gpu-powertune 5 --temp-target 75 --thread-concurrency 26624

*26624 is the highest thread-concurrency working.
*intensity lower than 20 drops the Kh/s 50-75% to 200-250Kh/s.

Any input?

7  Other / Beginners & Help / What does the DIFF mean? LTC mining on pool on: April 09, 2013, 10:10:35 AM
Hi, im getting really bad results here, does it have anything to do with this "diff"?
How can i optimize my results?

8  Other / Beginners & Help / What else do i need to know? Just bought a new rig 4x7950 on: April 07, 2013, 08:47:32 PM
Hi so i bought a new setup just to try minig, i know about ASIC's and all that,
i got a good price for the HW so if it doesnt payoff to mine i can just sell it with minimal loss.

Anyway, this is the hardware:

  • 4 x Radeon HD 7950 OC - 3 GB GDDR5 - PCI-Express 3.0
    4 x PCIe PCI-E Express x16 Extender Riser 15cm
    4 x ZALMAN ZM-F3 120X120MM
    ASUS M5A99FX PRO R2.0 990X AM3+
    INTEL 330 SERIES 2.5" 60GB SSD SATA/600

+ a big plastic box and some frames. (inspired by taco)

What should i think about before i start to mine?

Regards, spinx
9  Other / Beginners & Help / Need input on new bitcoin rig with 4x7790 on: April 04, 2013, 09:45:31 AM
Hi, im spinx from Sweden!

I have known about bitmining for some time now but never really botherd. Then yesterday i notice an articel about the increasing value of bitcoins. That made me interested Cheesy I have access to "free" power at my place so powerconsumption is not really an issue at this stage.

First of i want to know the answer to the obvious question "is it really worth it"? What are the main issues here?

I also configured an idea of a bitmining rig, looks like this so far, please give me input!

* Build my own open air case

Total price in Sweden : 7500SEK = 1150USD.

Data from mining profitability calculator:
  • Bitcoin difficulty: 6695826
    Generated coins per block: 25
    Conversion rate: 127.54000
    Hash rate: 4x295(found this number here in a thread) =  1180 MHash/s    = 1.18 GHash/s
    Electricity rate: 0 USD/kWh
    Power consumption: about 5-600W

Profitability Estimate
  • Time frame: 3 months
    Cost of mining hardware: 1150 USD
    Decline per year: 0,63 default: 0.63 (from Moore's law: 0.5 every 18 months).
    Revenue per time frame: 974.78 USD
    Hardware break even: 109 days
    Net profit first time frame: -175.22 USD

This estimates to a profit of 2156.24 USD for the first year after the hardware has been paid off. Is this a good number?
I also found 7850's for about 200USD/pcs, maybe 4 of them would be better?

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