This is because AMD (and nVidia too) are addressing the majority of their customers. This majority lacks technical knowledge to optimize their PC so by writing that you need almost twice the power consumption they make sure that when a person sees their card and sees 600w power consumption, he's buy a big enough PSU to not only power his card but also to power the rest of his PC and have enough room to not push his PSU to the limit - at least, that's how I see it (I could be wrong).

Anyway, from what I could find, the HD 7850 is indeed cheap on electricity, so yes, if I had to guess I'd say your 350w PSU should be able to get your whole system running when mining. Although keep in mind that if it's a low quality PSU it might not actually push 350w through it.

Yes it is, and your question is quite basic for building any PC so I suggest you go watch some tutorials on youtube on how to build a PC (mining rig is really quite similar for the most part).

Well, try this: Change clock speeds to --gpu-engine 800 --gpu-memclock 1250 and than remove all undervolting you may have done (i.e. return to stock settings).
If it's running fine than your next step would be to up the intensity and see if it's still stable.
After that point it's all fine tuning (playing with the TC value, undervolting, small adjustments to core/mem clocks, etc).


If I had to guess why your PC restarts it's because you got a mismatch between clock speeds and voltage.

Did you even bother to read the FAQ of the pool you're sending your miner(s) to?

How often do you send payouts?

We send ongoing payouts as soon as Bitcoins are back from exchanges. We usually send payouts couple of times per day.
What is the minimal balance for payout?

Ongoing payouts are for balances of 0.01 BTC or more. There's also a once per week payout for 0.001 BTC balances on Sundays.
I made a mistake in my username / BTC address. Can I change it?

This bit is in case you got enough 'Ready For Payout':
If you made a mistake, your username probably isn't a valid Bitcoin address and payouts were never sent to this username. In this case just message us on Twitter or Bitcointalk and we'll correct the address. You will need to provide a valid address that is different only by one or two characters to the wrong username. This is secure as it's impossible to purposely generate address so similar to another one.

FYI, User name is case sensitive.

Getting the same.

No mining going on there.

Has nothing to do with what anyone thinks, it's like you'd ask us if we think 1+1 equals 2.
RAM will only matter if you're using Reaper as your mining software, otherwise (using cgminer, sgminer, etc) it has really minimal effect on your rig and you can easily run your mining rig with as little as 2GB of RAM.

The only reason adding RAM solves anyone's problem is because they misconfigured their rig to begin with.

Right before I bought my R9 290s I searched the forum a lot about the card and I remember seeing a whole thread with dozens of replies saying how the R9 290s require a lot of RAM for them to work properly (and I mean a lot - 8 to 16GB lol). I then got lucky enough to chat with a guy who has a big mining farm with a few R9 290 and he told me he doesn't need more than 2GB to run any of his rigs.

Needless to say, once I got my R9 290s I got them to work flawlessly with 4GB of RAM (which I already had from an old PC - if I'd buy, I'd buy only 2GB) and when you check system processes you can see that less than 2GB is being used at any given time.

Not worried about noise, just wondering about performance / temp / longevity and such.

http://www.asus.com/Graphics_Cards/R9290DC2OC4GD5/

Opinions?

I hope EU servers are gonna go up soon. Really enjoyed the pool so far, but past 2 days I've been getting 8-20% reject rates again, so I had to move onto another pool.

290... 50$ for 100 KH/s is a no brainer.

You cant use those to mine Scrypt coins (or any other non SHA-256 coins).

Nuff said.

First of all get some space between the cards and second, undervolt em!

Seriously, stop mining until you do both things because you're frying your cards.

That's a faulty configuration on your end, not the pools.

Get MSI Afterburner and create a fan protfolio there. Mine is rather linear until the 85%/85c mark, than it just stabilizes on 85% and I let CGwatcher change intensity in case GPU overheats.

I'd venture to guess that VR is your VRAM.

A stupid thought, we sure your PC doesn't go to sleep? go to control panel, go to hardware and sound, go to power options, select change when the computer goes to sleep (never), win?

My own R9 290s eat about 275w each and produces 870KH/s (stable 800wu).

In GPU-Z you should be able to see VRAM temperature, it will be at the bottom of the sensors list (you can scroll down if you haven't noticed).
It also wouldn't hurt to monitor the temperature of your CPU.

And you really don't need more RAM or a faster CPU - speed isn't your issue here.

Gothic Mountain, elevation 12,631 ft (3,850 m), is a summit in the Elk Mountains of western Colorado. The mountain is north of Crested Butte in Gunnison County.

Gothic Mountain takes its name from pinnacles said to resemble Gothic architecture.

That's false. I'm running 3x R9 290 and am using only 2gb of RAM (got 4 gb in my system but in reality less than 2gb are being used).

If you plan on running more than 5 GPUs on 1 rig than yes.
There's a Linux distro going around that's made purely for mining, just search (here in the forum) for BAMT or SMOS - both are easy to use.