With a quality power supply, you could probably get by with a 1000W PSU if you keep the memory clocks down. Underclocking the video RAM and undervolting the cards dropped 100 watts (at the plug) on each rig. 2x6990's will use a little less power than 4x6970's, but not by much. Another thing to consider is that a PSU is usually most efficient around 75% load. Coughing up the extra cash for more than a 1000W PSU might save some electricity in the long run.
I have to agree all you need is 1000 watts. A 6990 only requires around 300 watts so that's 600 from the cards. If you get a good 1000 watt power supply you'll never have any worries. |
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Maybe it was damaged or the last one in stock or something............ I bet if you asked the salesperson about it he/she would have told you it could max out Crysis too. :p
lol nah man they'd tell you it would be able to play Crysis 3 and that shit isn't even out yet.  |
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Who's still buying cards?
The 5830 only brings in 0.129 BTC a day -- after electricity, that's $1.15 a day.
Not exactly a killing.
That assumes no difficulty increases and no further crashes in BTC price.
At least get your numbers straight if your going to criticize. A 5830 can generate .16 btc a day at 300 mhash or .176 at 330 which is possible at good temps (I'm doing it.) Lets be honest if you are investing in bitcoins you shouldn't be looking at the short term price. If you don't think the price will be up in a couple months then stop mining completely your basically wasting your time but if you think the price will go up eventually why not get a head start? The difficulty is only going to go higher as bitcoins reveals its self as very profitable. If we have to play the price right now game it only costs me 6.7c per kwh so it costs me 32 cents per day to run one. That means I'm making 5.5 times more then what it costs for electricity. That's not bad. |
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I wouldn't even give them the day or night of earning commission off me by buying anything from BB.
Avoid BB at all costs.
Oh I didn't buy it I just thought it was hilarious that best buy was fair and the "best buy" for once. I just went in to get a surge protect and just happened to see it. |
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Also I just took a look at toasty's thread. They are the same price...
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i would hardly call that a good deal. the member toasty on here is selling the XFX 5770 for a lot less, also brand new
It's more of a joke then anything. Just the fact that they have a better cost at best buy then newegg is crazy. |
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Apparently best buy sometimes has good deals. Who would have thought lol?  |
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oh lol I didn't check a card specifically. That doesn't mean they are not about to go on sale. In the past Ive seen this happen and I watched the site for an hour or two and it finally accepted me adding it to my cart. So I guess just be vigilant.
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Whats the release date for 11.8?
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It looks like people turned their miners back on. No matter what the difficulty changes to I'm pretty sure we can all agree it will be a very insignificant change. On the bright side we can look forward to around 20 more days of the same difficulty.
No, as I explained above, this was only a variance blip. Seems another picture is in order. I'm not 100% sure why your quoting me. Unless you think there was 6 days of bad luck people did shut off there equipment. It looks like its going back to what the difficulty is currently though hence me saying people turned miners back on. Every other comment I made is true though. We can expect insignificant changes to the next difficulty and that means around 20 days with no real change in difficulty. |
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It looks like people turned their miners back on. No matter what the difficulty changes to I'm pretty sure we can all agree it will be a very insignificant change. On the bright side we can look forward to around 20 more days of the same difficulty.
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I've seen people pay $1100 for 6990s and these are far better. I posted it so I wasn't interested either, but I know some people will be.
Any one who spends $1100 on a 6990 for a mining rig is a complete dumb ass. You can't even justify the card for the lack of space it requires at that price. Your just throwing money out the window. I agree though even for x2 this isn't worth it. The only time a 5870 is worth it is when its around 200 dollars. |
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I love the idea of 1160 volts on a GPU. GO man go! I'm sure that won't be a problem.
I don't know anything about overvolting but that's only a 6.6% increase from stock. That doesn't seem like too much. I may be wrong though. |
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Some people have reported problems with >3 cards on a 32-bit OS. Are you using a 64-bit OS?
I have a rig with 5 cards and its running win7 32 bit. It works fine. |
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I waiting because the 6870 consumes less power then a 5850. If it drops around 20% in price it will be the best card by far.
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Not quite as easy to find 5830s anymore unfortunately, although the Mh/$ ratio for the ones that recently sold brand new for $130 easily passed 2 Mh/$ making them very desirable cards. I bought two when Newegg had them for $130 and I can get each one to run ~330 Mh/s completely stable with added voltage, ~324 at stock.
To get the same hash rate to price ratio out of the AX6870X2, you'd have to buy one for under $300! While the 5830s are about the best in terms of Mh/$, there is also something to be said for the AX6870X2's higher hash rate per card. At some point, performance per slot becomes more and more important.
Pretty soon it's going to be very hard to find good deals but eventually 7xxx series will come out and hopefully drop the prices of 6xxx cards. If thats the case the 6870 will most likely take the 5830's place as the best card. |
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Yea I will I think the highest any one posted was 345 back in july. That was 1080 mhz / 380. I bet you could easily get 350 now if you tried but I definitely wouldn't keep it that high for an extended period.
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I plan to make an attempt for the 5830 record later. Right not they get around 335 for 1030/350 on stock voltage. I wonder how high I can push it |
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