It seems the doge mining has been poor recently.  How are we 320% into finding a damn block?  I've been earning less than half my usual amount in the last few days, but I'll give it a while longer and see how things stabilize.  I know the coin variance in small pools is large, but we are consistently lagged in finding blocks for some reason. 

I've been mining with doge.hash.so recently:

https://doge.hash.so/

My reject rate at dogehouse was about 5%, and it dropped to 1.5% with this pool.  Plus they have tons of interesting statistics, the ability to switch between a few coins, and seem pretty stable. 

Try uninstalling then re-installing the catalyst driver, unchecking all other weird programs it tries to install (including the catalyst control center), only selecting the VGA driver if possible.  Then run gpu-z to see your clocks, or afterburner to try overclocking. 

If they are powered risers, you have to attach the molex to the psu or they will not work at all... I'm not sure how your mobo is designed, but I would attach the psu's peripheral power molex connectors straight to your powered risers. 

My fancy new rig has 1x radeon hd 7970, and 3x radeon r9 290 video cards for a total of about 3000 kh/s. It's been mining dogecoin for a couple weeks now, but I just finished its latest configuration yesterday with all 4 cards running on one motherboard with two power supplies.

Full specs:

vga: 2x PowerColor AXR9 290 4GBD5-MDHG/OC Radeon R9 290 4G

vga: 1x XFX R9-290A-ENBC

vga: 1x XFX 797A-TDKC

mobo: MSI 970A-G46 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX

ram: 8 GB DDR3 1600

cpu: AMD Sempron 145 Sargas 2.8GHz Socket AM3 45W

psu: CORSAIR HX Series HX850 850W ATX12V 2.3 / EPS12V

psu: CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V

risers: two 1x powered, one 16x powered

total cost: about $2100

Woohoo, I found the latest doge block!  Feels good. 

That's some good advise... didn't think about the efficiency dropping so much.  I'll look into getting another supply. 

I ran a voltage monitor to test things out, and the PSU is actually doing a surprisingly good job even at 1100 watts:



The slight dip in the voltage chart is when I started the mining, but it's holding 11.928 V on the 12 V line under this crazy load (the vertical bar is the "cursor" where the voltage is displayed, not a giant outlier spike).  There is a slight ripple in the 3.3 V, maybe caused by pci-e bus use... maybe my second powered 1x riser will reduce this. 

Holy crap, I just measured the rig at 1100 watts total with my new meter!  Each card is drawing roughly 320 watts, so you're right on the mark.  I've been pushing that corsair 850W supply pretty hard... I'm actually amazed it has worked this well.  Surprisingly, the supply feels cool to the touch and the fan is barely spinning.  Might be time for a higher-wattage supply or some other setup to split the load. 

That's a possibility.  I assumed each draws about 250 W, but I have a power meter on order to actually test this.  I have a radeon HD 7970 that I plan to run in a separate junk computer, but maybe I could swap that in instead of a R9 290... assuming it's actually lower-power under load.  The Corsair supply is a good one, but I do doubt its ability to supply >900W continuously.  I've tried adjusting gpu-powertune to various levels without any change in the results.  

I really like the idea of your pool.  I noticed that on some coins I was the only worker in the pool... I know I'm earning shares, but finding a block will be really slow this way so I wonder if I should stick to coins with a higher pool hash rate?  Anyways, please keep up the good work on this pool . 

I believe you are right.  I tried taking out one of the 16x slot cards, and the speed of the other 16x slot card rose to match the 1x riser card.  Something about running two cards in the 16x slots is dropping my hash rates by about 10%.  I'll order another riser today and give that a shot.  


Notice that I swapped around the cards and still get the same results.  Doesn't seem to depend on the make of the card.  


This is an interesting suggestion... do you mean I should mask the pins on the card that detect 16x, 8x, and 4x presence?  I'll google it some more.  

(also posted on reddit/r/litecoinmining, but maybe you guys have a solution for me)

Hello fellow miners.  I built my rig two days ago and noticed a persistent problem.  I have three R9 290 cards, two from powercolor, one from xfx.  The two powercolor cards are plugged directly into the pcie 16x slots, and the xfx is in a 1x riser.  For some reason, I get 80-100 kH/s higher rates on the card in the 1x riser.  I tried switching the xfx card and one of the powercolors, and I get the same results, so it's not from differences in the cards. 

I'm using cgminer 3.7.2 on Windows 7 x64 with Catalyst driver 13.11 Beta9.5 and no extra app sdk installed.  I've used many different configurations, all giving the same performance drops on the two direct pcie 16x cards.  Currently I'm using something similar to the rumorcity ["R9 290 and R9 290X – Sweet Spot"](http://rumorscity.com/2013/12/03/litecoin-gpu-mining-with-amd-r9-290-and-r9-290x-sweet-spot-for-1000khashsec/) article.  My launch batch also sets GPU_MAX_ALLOC_PERCENT 100 and GPU_USE_SYNC_OBJECTS 1 . 


Here is a screenshot showing the issue (GPU 2 is on the 1x riser):



My rig specs:

2x PowerColor AXR9 290 4GBD5-MDHG/OC Radeon R9 290 4G

1x XFX R9-290A-ENBC

mobo: MSI 970A-G46 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX A

cpu: AMD Sempron 145 Sargas 2.8GHz Socket AM3 45W

ram: 8GB g.skill DDR3 1600 (4X 2GB)

psu: CORSAIR HX Series HX850 850W ATX12V 2.3 / EPS12V 2

hdd: some old seagate sata hard drive

I would appreciate any tips on how to get around this.  I'm kind of stumped as to why the direct pcie 16x ports are slowing down my hashrates... maybe the BIOS is clocking them down to save power?  I haven't seen any setting like this when looking though.  Is there some way that Windows 7 can slow the pcie bus? 

Thank you for this great pool.  I just started mining and I'm sending ~2.2 MH/s to your pool.  I set a few of the coins to auto deposit to cryptsy for sale, though generating deposit addresses and copy/pasting is tedious for so many coins... would be nice to somehow automate this in the future (maybe just use my cryptsy address to send all types of currency to my account when the payout threshold is reached). 

What is the consensus on using this version of BAMT:

http://guiminer.net/bamt

They label it "1.1", and seem to host the original 0.5c.  Is it legit?  Which version should I use on a new mining rig with r9 290 and 7970 cards?  Thanks for the information. 

Already received some!  Thanks a lot.  Probably more than I'll mine all night with my crappy nvidia cards.  

Been mining a few qqcoins with my pathetic rig today.  Would love some more:

QdNDZLW7SS2yXs5FPcCtW48DPAfWMiEFPg

Thanks . 

I know I'm late to the game here, but I find the mining process pretty interesting so I ordered parts for a mid-range GPU mining rig yesterday:

2 x ($499.99) PowerColor AXR9 290 4GBD5-MDHG/OC Radeon R9 290 4G
$899.98

1 x ($149.99) CORSAIR HX Series HX850 850W ATX12V 2.3 / EPS12V 2
$149.99

1 x ($79.99) MSI 970A-G46 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX A
$79.99

1 x ($42.99) AMD Sempron 145 Sargas 2.8GHz Socket AM3 45W Singl
$42.99

2 x ($16.99) Hynix 2GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
$33.98

1 x ($-28.00) DISCOUNT FOR PROMOTION CODE
$-28.00

Total Cost: $1178.93

I've heard varying reports on the R9 290 hash rates for Scrypt, but each card should get somewhere between 750 and 900 kH/s, netting 1500 to 1800 kH/s total.  I'll be mining smaller altcoins mainly.  Hopefully I can break even in a few months, though difficulty increases could throw a wrench into this I know.  

I'll throw in a spare HDD I have lying around and build it up when the parts arrive from Newegg.  The power supply should be large enough to support one more card in the future if I continue down this path.  

I'll be reading many tutorials on setting up mining rigs from now on.  I tried installing Debian on a junk computer to get a feel for the setup, but I couldn't get cgminer or cudaminer to build properly.  Might take some work to get this thing up and running.  Is anyone using the BAMT distro ( http://guiminer.net/bamt ) for mining?  Looks promising.  

Thanks.  It's stabilized maple burl, finished with tung oil and buffed carnauba wax. 

I first got into bitcoin through reddit a few weeks ago, and bought a little on coinbase to play around with.  Now I like to mess around with alt-coin exchanges (mainly BTC/DOGE on Cryptsy), and I've even made a handy desktop tool for easy DOGE trading using the Cryptsy API:



Someday I'll develop this more and release it as an open source project for others to use.  I'm also really into fine woodworking (and some metalworking) as a hobby, and I'm considering selling some things for BTC or other altcoins.  Here are some things I've made that might be sellable:

Mahogany bicycle bar-end caps:


Wooden disc golf discs: 


Custom pocket knives: 


Anyhow, messing with cryptocurrency has been pretty interesting so far.  I'm currently mining "quick quick coins" for some reason... maybe just to see if I can .