Hi,


Did anyone tried to put 4 X 6990 on the MSI 970A-G45 or any other 970 Chipset motherboard?

According to specs they have 2 PCI-e 16X and 2 PCI-e 1X both 2.0.

But in any case dis anyone tried to use all PCI-e slots on something like that ?


Regards.

Anyone have any experience with Unity Electronics, the vendor that this comes from?

Also, if you go to Unity Electronics website and search for the card, the same one comes up on there for $599. Why $100 more to buy it direct from Unity as opposed to buying it from Unity via Buy.com?

Obviously a new in box 5970 is a good buy at $489 but I just have to be skeptical of any vendor I'm unfamiliar with.

HD 7000 Southern Islands 28nm
HD 7990 New Zealand GCN
HD 7970 Tahiti XT GCN 1000MHz 32CUs 2048ALUs 128TMUs 64ROPs 256bit XDR2 8.0Gbps 256GB/s 2GB 190W HP
HD 7950 Tahiti Pro GCN 900MHz 30CUs 1920ALUs 120TMUs 64ROPs 256bit XDR2 7.2Gbps 230GB/s 2GB 150W HP
HD 7870 Thames XT VLIW4 950MHz 24SIMDs 1536ALUs 96TMUs 32ROPs 256bit GDDR5 5.8Gbps 186GB / s 2GB 120W HPL
HD 7850 Thames Pro VLIW4 850MHz 22SIMDs 1408ALUs 88TMUs 32ROPs 256bit GDDR5 5.2Gbps 166GB/s 2GB 90W HPL
HD 7670 Lombok XT VLIW4 900MHz 12SIMDs 768ALUs 48TMUs 16ROPs 128bit GDDR5 5.0Gbps 80GB/s 1GB 60W HPL
HD 7570 Lombok Pro VLIW4 750MHz 12SIMDs 768ALUs 48TMUs 16ROPs 128bit GDDR5 4.0Gbps 64GB/s 1GB 50W HPL

I have 12 PowerColor 6870x2 and I wanted to build "that dense rig" with 4x card (hence, 8 GPU on board) multiple times. But - No luck on following issues:

1) Underclocking memory: I didn't even manage to get down from 1050. aticonfig --odsc=920,820 doesn't work. This is what all of the GPUs show afterwards:

Adapter 1 - AMD Radeon HD 6800 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    920           1050
             Current Peak :    920           820
  Configurable Peak Range : [775-1000]     [1050-1250]
                 GPU load :    99%

2) 4 Cards simultaneously: Booting with 4 cards is no problem (ST1500W SilverStone PSU installed), and they all show up in aticonfig (Linux distro). But as soon as X is starting, it bails out with a Segmentation fault. If I pull out one card and install a 5850, or a 6970, I've got 7 happily mining GPU's. The 8th one fails down the whole system. I don't believe it's a power issue or a hardware issue at all, as all of the barrier values aren't reached at all.

3) Powering clocks on anything higher than 920: Currently, thats the maximum clock frequency the cards stay stable on. Raising it to 930 kills the cards at last; they freeze at a random time afterwards. In the end, the cards stay below 300 MH/s with these settings (at 294).

I bought these cards on the better price ratio opposed to the 6990, and because of the fact almost no supplier can deliver 6990s at the moment, at least in germany. But at the moment I tend back on waiting for the (more expensive) 6990 cards, for the sake of getting at least 2,5 GH/s out of one box.

If anyone have better experience and conclusions on this device, I'd be happy to hear and share some wisdom about it.

I just noticed today that BTC took another 5% dump.

It's true that BTC "could" go to da moon, and "could" go to 10 cents.

But which is more likely -- or, is a third option more likely?

The charts HAVE to give us some indication. Does anyone remember what BTC were selling for right after the Mt Gox hack? $16!  The it dropped a dollar or two every week or so.

Recently, it dipped to 7 before recovering to around $12.50 (briefly) then was pretty stable at $11.50 for a while.  Now $11 seems like a distant dream!

Even $8.50 is out of reach at the moment.

So I must say that an explosion in value would require a "black swan" (out of left field) event, whereas the status quo is lower and lower every couple weeks -- who knows how low it will go before stopping and/or reversing. It SHOULD stop when miners stop selling -- but, as many people point out, BTC mining is still profitable (if you're good at it, have cheap electricity, etc.) at the crappy price of $8 per BTC.

As long as there's profit to be made, the difficulty will rise and/or the price will drop, until it reaches an equillibrium.

Heck, I hear about guys buying 40 6990's today. Even with BTC at $8.10 each. Difficulty is going to rise -- unless a bunch of people jump ship at the same time of course.

It's not too bold of a prediction I'm making -- namely, that returns are going to continue to diminish. But that's why I'm leery of 9, 10 and 12-month payoff periods.

Believe me, I hope somebody invents a personal fusion reactor, or generator that runs on water, that the inventor decides to ONLY sell for Bitcoin -- 12 BTC each. That would be just the shot in the arm we need 

As far as I'm concerned, he may as well be a gov't hired goon to infiltrate and spread fud. And I honestly have no doubt that there are already many of these types in bitcointalk already doing just this. Easiest to take down bitcoin is to disseminate the supporters from inside with disinformation.

So every post that is in any way negative to Bitcoin somehow has me behind it? I didn't know I was that powerful.  
Especially since many "negative" threads are started and finished without one post of participation from me.

I also hope that Bitcoin goes mainstream. I actually have a credit card merchant account, and believe me there are few things that are that much of a pain in the butt (maybe going to the dentist, or having a colo-rectal exam?) I kid you not; they add fees every month it seems! I can't wait until I can just accept Bitcoin and drop my merchant account.

We are all allowed to discuss whatever comes to our minds on here last time I checked. I'm not going to shelve half the topics and posts I think up just because someone might get the wrong idea that I'm on a calculated campaign to discourage people. Too bad for them. I'm not a troll, my posts are perfectly in accordance with the ToS, I haven't been banned yet (and am not about to be), so there's no problem with me. If you don't like my posts, DON'T READ THEM.

Truth never hurt anyone. I'm just discussing the situation as it evolves. It shouldn't be threatening to anyone who isn't doing something stupid.

The last thing I called "ridiculous" on was $160 5830's on eBay. 2 weeks later, they were no longer a reality. I also called for sub-$1000 PCs back in 1996 (I even lost my computer store job to prove it -- I didn't sell enough high-end PCs, because I saw that a 133 Pentium was about the same as a 200 Pentium, even though the former was $1400 and the latter was $3000) I was also recommending people get out of the stock market and buy gold in 2007 (when it was $650 -- it's currently $1800 something) So I have been known to have decent "vision".

i don;t get ti.

That's because both the 5x and the 6x are on 40nm thingamaboppers.  The 7x are gonna be on 28nm thingamaboppers.  The extra space can/is going to be used for stream processors.

Actually, it's my "critics" that are the selfish ones -- they drool over the used, after-market 6990s and 5970's they are going to pick up when various miners find out the truth about current Bitcoin profitability

The more people sink their money into them, the more units will be sold on the aftermarket.

So you can speculate about my "true motives", and I can speculate about yours. Neither of us can prove our suspicions true or false. So why go there?

Isn't it a foregone conclusion that all miners on this board want difficulty to go down, and would like to discourage people? I could point to DOZENS of threads and posts that are much more discouraging than any of mine (past or present). I don't know why I'm so memorable.

I have 20 cards total, no more than 3 per machine. I bought everything at a good or great price.
I've been slowly building up since I started in late May of this year; I stopped expanding right before the August 6 crash; I haven't bought a card since.
I'm glad my cards have all had a chance to partially pay for themselves; but most of that payoff happened before August 6!
Maybe 10% of the money I made came in during the last month; the other 90% came during the first 2 1/3 months. The profitability of Bitcoin has gone way down.

Of course those who are already set up to mine are going to keep doing so.

http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007709%20600083901%20600126572&IsNodeId=1&bop=And&Order=PRICE&PageSize=100

tips appreciated if you buy.     1DNipGaJdURgFMLy8DGF7L8mfhMatAdqXG

Even if you're comparing your mining return to interest at a bank (which, admittedly, is quite low), it's still silly to buy cards that won't pay off for 9 or more months.

Besides the usual argument, "Bitcoin could be $3 in a few months!" which no one can really refute...

What if the 7000 series cards have a much better stream processor count?  Another thread mentioned them having *double* the stream processors. That's only a rumor, of course, but what if something like that happened? Does any of us know what the 7000 will bring? Isn't it prudent to wait until the details have been released, before sinking one's savings into 6990s?

Those who *didn't* buy cards with a long payout will be in a better position, because they can buy the 7000 series cards and keep up with the difficulty increases that will no doubt ensue.

Those already "invested" in $500 5970's and 6990s will have to watch their returns diminish, and won't have as much capital (or free slots) for 7000 series cards as everyone else.

So there are many things to consider when you go "all in" at this point.