This is what i like to see.

Congratulations on your new miner!

You have to pay to play in this type of endeavor. However,  you didn't screw yourself cause there's a pool out there called Middlecoin which doesn't give a rip about static ROI estimates.

Middlecoin mines most profitable altcoin and sidesteps the difficulty of major coins like Litecoin.  You can have so-so days and then awesome days where you make x2-x3 what you normally would.

Hook that bad boy up already and don't look back.

Seasonic 1000w would be fine for 3 280x's + Sempron system undervolted.  Don't underestimate though, i would expect you to easily tap that wattage out cause 280x's can get up above 250w in a hurry.

Expanding your rig with 290s is simply the questions of 1) do you have the slots 2) do you have the power.  2 more 290s is adding another 600w to the system, so plan for that type of increase.

As for powered USB risers, i always suggest powered for big cards like 280x's and 290s.  Protect your investment.  Be safe.

Single core sempron is fine for mining, but it is slow as hell if you need to do any sort of maintenance work.  I personally go low TDP dual core because i like giving the OS its own core and the miner program the same.

Oh dear. 

I would recommend SGMiner 4.0.0 + optimized TC 8192 .bin.  Link is in my sig.

Your config is good though, i would suspect a driver platform issue.

Want an honest pool?  Look no further: www.netcodepool.org

We don't tolerate crookish behavior and we are always watching.  

Very impressive.  Perhaps this will take pressure off the top-end AMD cards.

Man there's some cheap LEAF out there.  I seen 26 satoshis earlier today.

Done quite a few deals with Honeypot (check my trust), and as a businessman he has conducted himself with the upmost class, integrity, and transparency.

No problems recommending.

Use SGMiner. SGMiner sets up just like CGMiner, except you do not include the --scrypt parameter. Link is in my sig.

It has a fix for CGMiner's inability to run different --gpu-threads (-g)  cards together, as well as allowing a single -g with multiple parameters (you had to do separate -g flags for each card in CGMiner).  

Your config should look something like this:

Here.  CGMiner is crap, use SGMiner 4.0.0.

You can only use the pci express slots, that board has 2 x1 and 2 x16.  You cannot use the regular PCI slots unless you use a pci-pcie x1 converter card which generally is not a good idea.

About the PSU: Your power supply is about the only thing in your system that can kill it immediately.  Do not skimp on a bad quality supply.  Your rig is an investment.  This is sound wisdom and you can take it for what it is, but those are terrible power supplies and you have been advised as such.  Any vet miner will tell you this.

Your cards appear to have 1 6 pin.  With that seasonic PSU, you would do a single 6 pin into each card (4 total), and then a molex -> 6 pin connector on the other 2.  

When people don't follow the rules of the house (repeatedly), they get thrown out.  If the alt section is nuked from this site because people cannot seem to follow posting rules, then so be it.

Management here has already shown great restraint / moderation in dealing with the alt coins.  They even gave the altcoin section subforums.  I would hope their patience would continue, but seeing as how people are these days don't read, don't care, and then come out with an entitled mindset that flies in the face of rationality - let the nukes fly.

I have 2 of these AX1200's, and there are indeed 3 6x2 pice connectors...but not 4. The unit does come with 9 billion molex / sata connectors, so molex converters one will need.

A couple issues, OP.

Your current boards can only do 4 cards max.  Return those boards and use this one.  I've had great stability running it with 5 cards.  It also has a molex powering the PCI-e Lanes.  With that board you can do 2 down, 3 up for good airflow and minimal riser use.

Your APU will hog a GPU driver slot that you really can't afford as you will be running 5 cards per rig.  Return those and go for the Athlon X2 340.

Logisys power supply is a no-no.  You only theoretically need a good 850w for each rig of 5 cards. 7850 is ~110-120w per card.  No need to run x4 PSUs. x2 Seasonic 850w, 1 per rig is all you need. Killer deal.

I would highly highly suggest SGMiner 4.0.0 with the following parameters:

@ 1120/1500 clocks i am getting 480khs across the board on 5 MSI 270s.  Using 13.12s + 2.9 SDK in Win8.1

SGMiner link is in my sig.  It fixes crap like what the OP is experiencing.  270 and 270x should be able to use the same config.


Note: If you are still getting that issue where one of the cards won't break out of the 100s, then you need to reset your driver platform.  Uninstall everything using the CPanel Catalyst program.  Throw on the 13.12s + 2.9 SDK.

Shaders don't mean crap once the bandwidth outruns them.  Both the 7850 and 7870 have roughly the same amount of bandwidth.  Your result is not unexpected.

7870 maxes out at 400-450khs.  You will not see 500khs on a 7870.  400khs is actually not a terrible result, i've seen far worse.

7870XT (7950 LE) will do 500khs with some tweaking.

7850 / 7870 / 7870XT all share the same 256bit memory interface with roughly similiar memory clock speeds.  This is why the 7850 is so close to the 7870 / 7870XT.

Extra shaders come into play as you go up the line (7870XT has 1536), but the extra shaders have extremely dimished returns as bandwidth / latency / memory amount available are more important than compute past a certain point.

He is not only a troll, but a criminal.

If i went out in the real world and maliciously destroyed common law property, i would be in jail on misdeamor or felony destruction of property charges.  So would that clown also.  He is lucky i don't have more free time on my hands at the moment to query a law enforcement detective and ask a few questions.   I did get screencaps of his posts regarding Gamecoin, though.  Watch yourself, "BitcoinEXpress".

People love to go straight to politics, drama, and/or outright criminal subterfuge like the poster above me.  It's a damn shame.

I and many others are quite appreciate of the latitude bitcointalk has given to the altcoins and would hope for continued patience in that light.  

To those who support altcoins but are not appreciative of that latitude: take a hike, go build your own forum, or whatever.