I just got 4 more of these. Since i have so many i decided to put together another computer. They run 1050/300, temps 60, fans 35%, hash 285, no extra volts.
this makes no sense #1, i had 7 of these and none were stable at 1050/300. the highest was 1030/300 #2, the temp would not be 60oC with the fan at 35% unless you had an ambient temperature of 15oC and/or some big ass industrial fan blowing right into the case #3, i get 325mhash at 1000/300 |
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i've used some godawful amt of power supplies.... most recently I guess I've had two 850w thermaltake toughpowers that are still working after about 6yrs of moderate+ use
ocz (fatality) *1000w (fixed) operating in same ambient temp as 3 seasonics and 1 thermaltake died after a few months. 3 5830's on it , probably 60% of capacity
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3x5970
all configured the same, MH/s is +/- 2% between all three
bamt 0.5
cgminer 2.3.1f
clocks/mem 835/300
vddc 1.163
temps: 68-72C
MH/s 758
Why do you run them so high? 1.163? wtf.. i have 5 5970's, and 7 of the cores can do 830 @ around 1.02V |
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On 5870, there are only 3 effective voltage, distributed in range:
0.95v
0.96v-1.06v
1.07v-1.17v
0.96v and 1.06v actually gave same readout on power meter, so you may run 825Mhz on 0.96v, but that will not improve efficiency
it'd make the card run hotter, so the fans would spin faster? so it would improve efficiency by reducing wear & tear on the card, fans, and whatever watts the fans take from spinning faster |
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$170 = limit
***************it's not negotiable
I've already purchased 3 for $170 or less and need 1 more
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and here i don't like going over 70oC, wtf
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Thanks for chiming in, Meni. If you see anything wrong with my reasoning/math here (or zvs'), please let me know.
Settings were changed from f=-0.125, c=0.1, o=0.8 in round 86 to f=-0.17647, c=0.15, o=0.85 in the rounds zvs is referring to.
If DGM is implemented as described in the forum or in AoBPMRS, it requires score rescaling if the average fee is changed. If no rescaling is done, it means that people who mine shortly before the change will get on average less than a 1.25% bonus, rather than 1.25% as they were promised. This has no effect on people who mine after the change. I don't think that has any relation with zvs's observations, though. Another effect, which is normal, is that changing the timescale means that miners have a new equilibrium score, which takes some time to build up to. This can cause a reduction in immediate payments, which is compensated by a higher later payment. But from a casual examination, it looks like what zvs refers to as "messed up payments" is not related at all to the parameter change. The total reward of a block depends on the luck of several previous blocks. (This is the result of cashing out previous score, it has no affect on the profitability of mining new shares). It's possible that there were a few lucky rounds before block 87, causing a reduced total payout which slowly builds up back to the equilibrium. Hmm, I think the change combined with the earlier lucky blocks probably made the payment less than it would have been than if nothing had been changed? Wouldn't it cause the lucky blocks to stick around for longer when otherwise they may have been "passed" by the share count? In any case, yeah, it definitely caught up or w/e. It's paying out fine now. |
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+1 amazingrando
no problems, 5830 card, i sent first
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Is this even worth subscribing for a beta invitation? Or is there a backlog of several years anyway?
Would be nice to show that on the registration form.
Years, NO... Maybe just 13 months. Nah, we stopped invited due to maxing out our system. We should be able to get everyone on within a week. Hm, apparently not, from what it looks like? I think I signed up about a month ago & haven't gotten anything... On the question of your hash rate, I put 5000Ghash instead of 5Ghash, though..  |
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hmm, is that keyboard an IBM Model M 1391401? or just a newer copy of one?
Back about 10 yrs ago, I bought half a dozen of 'em new in box off of eBay for ~$120 (all w/ 1989 manufacture date)
and I'm on my 2nd as of now...
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5770 $65
5830 $90
5850 $125
5970 $385
6770 $75
6990 $525
7970 $475
Do these numbers seem about right? Thanks.
5830s and 5850s usually go for a bit more. yeah, those look more like the prices before shipping. but if I were looking to buy a 5850, $125 is about the max I'd pay (but the average is more around $140-$150) my limit for 5870 is ~$160. i sold off all my 5830's. but as a buyer, I'd try to find any at $95 or less after shipping. as a seller, I'd try to get $110 (including shipping) or more i don't look at 5970, 6990, 7970, since all three of them are losers in terms of generating profit from bitcoin.. if you find one for cheap, you'd be better off reselling it |
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i suspect there's a point where the diminishing returns become potential profit lost w/ huge undervolting.
right now i have a 5870 running at 1000/300, 1.05v, getting around 460mhash/s
two others are at 980/215, ~1.14v (I forget exactly), getting around 440mhash/s. In about 5 or 6 hrs here, I'll drop them to 850/215 @ 1.02v... the other one, I just leave at 1000/300 as it never goes above 65oC anyway
(ed: oh, my elec is only 8c per kwh.. i wouldn't undervolt at all except for the heat issue during the day. still working on an outdoor workshop area to put them in)
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Beginning round 87, bonuses will be eliminated and c increased from 0.1 to 0.15.
This change appeared to have messed up the payments as well, Block 87 (911000 shares) only rewarded 36 bitcoins Block 88 (798000 shares) rewarded 40 bitcoins Block 89 (1261000 shares, negative luck) rewarded 46 bitcoins |
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i have them all downloaded  |
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http://www.newegg.com/Product/Product.aspx?Item=N82E16814150561as far as I can tell, those cards are the exact same, except this one is smaller (8.66" x 4.4" x 1.5" vs 10.3" x 4.4" x 1.5"), says "AMD Advanced Parallel Processing Technology (APP)" in features while the other one does not, and is $10 cheaper instead of including Dirt are there some other diff between the models?
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I've seen people have like 20 or more mining rigs set up in one room? how is that possible. Each outlet can handle only 15-20 amps. You can't even put 2 mining rigs into 1 outlet or its going to blow a fuse.
extension cords? i use power from 3 rooms just make sure you get a good extension cord |
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I have one 5870 that crashes instantly (when mining) if I try to set the memory below 250 or so. My other two handle it fine (they run at 975/215). Never figured it out.
Though the two at 975/215 require 1.12v to be 100% stable.... the one that I can't clock below 250 runs stable at 1000/300 at 1.04v... truly epic
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Ordered one the other day, can't wait until it shows up. I am almost at 2GH/s now. Do you guys think it's safe to run three of these on a 750w Single Rail PSU? I used this http://bakkap.free.fr/Misc/wCalc.html and I figured each will need around 200 watts to run. EDIT: I ordered the 5830 Xtreme version. yes, if it's a good 750w psu (and if it's built for mining and doesn't have all shitloads of unnecessary peripherals).. they use more like 150w or so I'm running 10 5830s across two power supplies and the system draws just over 1500 watts. Have a damn hard time achieving greater than 2 MH/W with these inefficient cards you also arent losing .50c a day in equipment value, like you would if you were using 7970's. can't really imagine this being much of an issue unless you pay more than 20-30c per kwh, and if that's true, you shouldnt be mining at all |
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