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1  Economy / Invites & Accounts / Selling Bitcointalk accounts on: September 17, 2019, 11:24:52 AM
Selling Bitcointalk Accounts

Legendary: $200
Hero Member: $100
Senior Member: $50
Full Member: $25
Member: $10

Accounts are not hacked, no loans, 0 negative feedback.
Discounts available if you buy many accounts.
Accept Escrow.

Telegram @donza411
2  Economy / Digital goods / I$SELL-Walmart-Target-Amazon-Ebay-BestBuy-AppleStore-Itunes-Steam- more in topic on: August 09, 2019, 03:58:20 PM
I do sell these gift cards.
For bulk buyers will give better price.

accept btc/eth
escrow accepted
telegram @donza411

Walmart 65%
Target 62%
Amazon 65%
Ebay 65%
Best Buy 63%
Apple Store 55%
Itunes 62%
Google Play 65%
PSN 64%
Steam 73%
Onevanilla 63%
Sephora 70%
Home Depot 60%
Lowe's 62%
Macy's 62%
Nike 64%
Nordstrom 72%
3  Economy / Services / Order anything you want from Ebay/Amazon at 80% of value on: July 24, 2019, 04:59:03 PM
You send me your list in ebay/amazon and I fill it at 80% of value
accept btc/eth
escrow accepted
telegram @donza411
4  Economy / Currency exchange / [H] eth [W] btc on: July 10, 2019, 03:29:05 AM
looking for a quick 30$ swap
will go first if high rep member with previous deals
escrow accepted

telegram @donza411
5  Economy / Digital goods / [H] amazon, ebay, walmart, onevanilla [W] btc/eth on: July 10, 2019, 12:13:39 AM
have amazon, ebay, walmart, onevanilla gift cards and want btc/eth
escrow accepted
telegram @donza411
6  Other / CPU/GPU Bitcoin mining hardware / Where did my 5 Mhashes/sec go? on: August 25, 2011, 05:45:24 PM

I replaced three of the components in my PC in order to increase the efficiency of my mining. An ASRock Mobo made room for a Gigabyte P41T-D3 and 1GB DDR2 got replaced by 2GB DDR3. Also the Pentium D 3.0 GHz is now no more, in its spot a Celeron now keep the machinery going.

As expected, the power consumption went down from 355W to 270W. But also the hashrate lost 5 MHashes/sec from 421 to 416. Any ideas what causes this? All other sttings stayed the same. I noticed that CPU-Z now claims GPU usage is down to 97% from 99%.
7  Other / Beginners & Help / Mining Speed Difference on: August 11, 2011, 02:23:12 PM
Hey there, I am using guiminer to run phoenix miner. My displayed hashrate in guiminer is somewhere around 385 MHash/s. But the homepage of the pool I'm in is displaying something around 450 MHash/s. Does anyone know where this discrepancy comes from and whom I can trust (more)?
8  Other / Beginners & Help / Doing the math, starting to mine still paying off? on: August 11, 2011, 01:58:29 PM
I was planning on setting up my own bitcoin rig just for the fun of building something.
But I am a student and on a small budget Cry so this project has to at least to amortize itself. Just did some calculations to see how deep down in my wallet i have to reach to get this thing on its way.

I already own: a MoBo with a Celeron and 2 Gigs of RAM. It has one PCI-e x16 and three x1 slots. Two PCI slots as well but I don't want to utilize them for now. Also I own a HD5870 and a 350W and another 450W PSU. The costs for these hang around 380.
But to get this thing on its way I want to add 3 more HD5870s. Why? Because they have a good Hash/Watt rating and electricity is expensive where I live. I mean really expensive. And I don't own solar power panels or wind turbines or anything  Wink . I would also go for HD5970s but they are rare right now. And HD6990s are too expensive.
Three more HD5870s cost around 170 (used ones, yay!) so I add 510 to the list.

Now I can't pop them in my case, too, because it would get too hot I'm sure. The warm air from only one card is already stressing the PSU that is mounted above the mainboard and sucking in the hot air from inside the case. So I need PCI-e extenders. Four x1->x16, three of them with molex power-cords so that I can use the 450W PSU on them cost ~70 in total (shipping included). And then I also need the PSU starter adapter thingy so that both PSUs start simultaneously. +8

That is a grand total of 968! Bazinga!

Now I would estimate the power consumption of this baby to be 4*200W for the GPUs and another 100W for CPU, MoBo, and fans that I eventually put in there. (Now one of the PSUs is probably gonna blow, maybe add another 80 to replace the 350W thing with something (cheap, but) decent, like 550W or 600W)
...anyway 900W at 80% efficiency is gonna suck ... 1125W out of the wall. That means I will be paying 189 more with my next monthly utilities bill. (0.25/kWh, per four weeks or 28 days).

Oh and now the sweat part, suggested income!
I would say a good estimation of the Hashrate would be 1600 MHash/s, that's 400 MHash/s per card. So according to this calculator at the current difficulty of 1888786.70535 I would be averaging 23.84 BTC per 28 days.
And at the current currency rate of ~ 7.10/1BTC (that's 10$/1BTC) I would then earn 169.

But OH WAIT! I need to pay the electricity bills, so what I really earn is 169 - 189 (-some fees for the pool) (-some less income if difficulty increases) = -20 OR EVEN MORE!
9  Other / Beginners & Help / PCI-e x1 vs PCI on: August 05, 2011, 07:56:33 AM

Does anyone know whether it'd be possible to run a PCI-e x1 (or a x16 card that is only running at x1 bandwidth for that matter) in a old PCI slot?
10  Other / Beginners & Help / The PSU Mystery on: August 04, 2011, 09:19:47 AM
Hey there!

Something weird happened to me when setting up my very first miner. I had a leftover mainboard and CPU, also a HDD and a case, so I figured if I popped in a new Grafix-Card and a PSU I could mine away...

I calculated the power consumption of the whole system and came out with ~340 Watts. So I bought a 350 Watt PSU (Xilence Rev. 3).

But when I had everything in place, OS installed (WinXP 32 Bit) and phoenixminer set up, the power consumption went to >380 Watts. (I had a Watt-Meter at the power plug of the PSU.)
I thought it would be okay that the PSU went higher than 350 because of course it only has an efficiency factor of ~85%, so to supply 350 Watts it might need 350 / 0.85 = 411 Watts. But after two hours getting hotter and hotter, it blew. Whoooops!

I then bought a 450 Watt Thermaltake PSU and it's running at <320 Watts now.

Also, I had the Xilence PSU replaced so would it be wise to put it back in and think of the first PSU as construction error or something?
Can someone explain what happened?

Thanks in advance!
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