I can verify that my 7850 CAN DO 330MH/s+ hash rates, STABLE 24/7. I can post screenshots if needed, but here are my settings:
ASUS Radeon 7850
-Fan speed @ 67% - Temps never go above 60C
Core clock: 1175 MHz
Memory Clock: ~1000MHz I believe
Voltage: 1.175V

Using latest version of GUIMiner, that is the ONLY program running on the computer, other than GPU-z and Sapphire Trixx, with flags -v -w -128 (or the one for the highest hash rates, can be shown by hovering over the flags box in GUIMiner)

This system is powered by an i7 2600k @ 4.4 GHz (don't ask why, I just had the 2600k lying around), 6 GB XMP RAM, 750W PSU, 1 TB HDD.

If you need any more info, or want screenshots then reply and I can get some up for you.

So they cancel your order if you diss their product that they've used for personal profit with your payment that you've waited up to 1+ years for? The product they keep saying will ship soon but only ships ~20-100 at a time?

I don't see why they don't have a scammer tag already. This POS company deserves more than a scammer tag....

Why do I want to stay away from GHz edition cards? Anything different with them than a normal 7970?

I agree with the others, if the price was 0.5 BTC then I'd definitely buy one. No chance of me buying one - or a bundle when they're priced around $240 each. For that price I could get a 7870 which does around 400 MH/s, comes with free games and has a better resale value. Only real downside is that it takes more power, but it can be used for gaming, or Folding@Home as well.

It's a local seller. I decided to not get either though, just because of the model of card, the cooler on it, and I could get a new 7970 for about the same price if I sold the free games that came with it, but with a warranty as well, and my choice of brand.

Hey everyone, here's my current mining rig:
i7 2600k
MSI Z68 MA-ED55
6GB RAM
Radeon 7850
750W PSU

I have found a 7870 used for sale for $160, or a 7970 for sale for $300. I'm hoping I can bump the price down $25-$40, but let's use the original prices I stated.

Which card would you get for dedicated mining? The reason I'm looking at that 7870 is because it would be able to crossfire with my 7850, and when I decide to sell this computer might be a plus just because the computer will have more performance and won't have mis-matched non crossfireable cards. Should I stay away from both cards and wait for ASICs? The only reason I would rather get a GPU is because of it's resale value compared to an ASIC.

Anybody know how much you need to cash out?

I'm really interested in this.

So to get it straight, you pay them BTC, and then they'll configure it to mine for you at the hash rate you've purchased and you'll get payments from the mining your purchased hardware has done? Is this incorrect?

Well all you really need is a cheap low end system and then throw a good card or two, such as a 7970 or 5970, and then you have sort of a budget miner. Mining bitcoins really doesn't require much CPU power or RAM, just a decent graphics card or two. Or you could wait until ASICS are easy to get, but that might be awhile...

That's not bad either, once I completed over 900 shares for a single block and didn't get a reward for it either...

I think I have close to 0.4 BTC now after a few weeks of 24/7 mining, I'm happy with it.

Hi, I'm currently mining around 10-15 hours a day with my 5970 I recently got for $225 locally. The only problem is the noise and heat it generates, as well as the impact it will have on the power bill. :/

So what do you think I should do? Wait until ASIC miners are actually shipping to buy one and mine with my 5970 until then, and then sell the 5970 or what do you think is a good idea? I currently have around 0.25BTC, lol.

How in the world are you going to fit 5 GPU's in that motherboard? Do your research, the GPU's can only go in the blue PCI-E slots, and there are only 3 of them on that board. Remember spacing too, on my Sabertooth Z77 board with 3 PCI-E slots I can only fit 2 GPU's on it (GTX 670 and 5970 currently) because 2 of the PCI-E slots are too close together, another GPU wouldn't fit in.

There is no motherboard in the world that I know of that supports 5-7 GPU's. The power supply would have to be gigantic as well, because unless the cards are really low end, they'll be pulling anywhere from 150-350W each. The only way you could put 7 GPU's in one system if there is an AM3+ motherboard with that many PCI-E connectors would be to tether 2+ PSU's together. When you get to tethering it just becomes more of a pain as well though. So I don't think you'll be hearing any experiences from people with 5-7 GPU's on a single board.

I think the most an 1155 board supports is 4 PCI-E GPU's.

I wouldn't build a GPU mining machine this far in the game. With ASIC's right around the corner, save your money and get one of them instead. They hash at much higher rates for the price, are quieter, and take much less power.

Besides, with 7 GPU's running 100% load all day long, especially from the 5xxx/6xxx series, they are going to get hot and loud. You power bill will take a tremendous hit as well. See what others have to say about this, but I think most of them will be thinking like me.

1. 5970
2. 850/500
3. 65C
4. 56% @ 3600 RPM
5. 100% load since
6. 1.05V
7. 745 MH/s

It's a power sucking beast, I think I may have to look into selling it for a 5 GH/s ASIC miner sometime soon, with summer coming and stuff.

Thanks for the tips. I tried CGMiner out, but couldn't get it working. Maybe I'll fiddle around with it in the next few days and see how it goes.

Does anyone know how to get more MH/s with this card? I'd really appreciate a bit of help.

Edit: I added the flag "-v -w128" to both slots and that bumped my total MH/s up to around 730MH/s. I'm happier with this number, and I'll see if I can get the core close to 900MHz, and see what that does. The core is currently on 850MHz, and the memory is at 500MHz, the lowest the memory can go.

Thanks for the explanation, even though I'm not the OP. Interesting to know.

Having one of these units would be amazing. Just don't have the cash.