Topic: [closed] Buy shares NOT - page 3. (Read 49694 times)

As you seem to have pci extenders anyways, take a look at the sticky post in the mining hardware section.

There is no need to use a traditional PC case for bitcoin mining, actually (as you discovered) it can be quite inconvenient for the cards.

Interesting info =D

GO DISHWARA!

Note/Advice/Tips/Guide to those who going to buy graphic cards.

I was fooled by some other fool/fools who designed graphic cards.
2 types of card design i see & i call it OPEN type & CLOSED type. I don't know what manufactures use to call.

Example for OPEN type card is R6970 Lightning card.
http://www.msi.com/product/vga/R6970-Lightning.html

Example for CLOSED type card is MSI R6970-2PM2D2GD5 card.
http://www.msi.com/product/vga/R6970-2PM2D2GD5.html

I bought 4 nos. of OPEN type, R6970 Lightning, since it is factory over clocked to 940Mhz & also has TWO FANS.
I thought since it has TWO FANS & ITS MILITARY DESIGN, it will run much cooler than the other type.
But i was WRONG.

Actually this is foolish design to use in a multi GPU card setup. This type of cards MUST NOT be used if more than 2 cards in a pc.

In my mining setup, 6 cards are connected from slot1 to slot6 using riser cables, with more than 1 inch gap between each cards.
The LAST card in slot 6 , grabs air from open, while the card before that grabs air from back of last card & it goes on.....with FIRST card getting air from back of second card.
Here comes the problem.
The last card runs cooler(65C) & the FIRST card runs HOTTER than all (>95C)

What happens here is the last card grabs air from outside & the card design allows air to come out of the card in ALL directions.
If you look at the card, you can see there is gap in ALL 4 sides of the card for the air to escape.
The fan grabs air, pushes to the heat sink & the hot air escapes from all sides.
The card before the last card, grabs the HOT air from last card, & gets temperature increased & air escapes through all sides.
As this goes on, the FIRST card gets hottest air & so the temperature of the card is very high.
Placing 6 120mm fans on top of cards don't reduce much temperature. Only up to 85C.

Here CLOSED type works better.
In closed type air is sucked from mouth of the card & it passes to the GPU & comes out of the ass(back) of the card.
Their is NO GAP for the air to escape in any side.
This makes the air coming out of card is VERY hot. But it cools the GPU.
Since it SUCKS air, even in multi card setup, it doesn't increase the heat of near by card, since the air never escapes on sides.
Air goes out only on cards ass.

But this type also has another problem.
Since it sucks air from mouth & release hot air through ass & NO GAP for air to escape in any side, DUST if accumulated on the ass will NOT allow the hot air to go out easily.
So, it needs to be looked in to every now & then to keep the ass clean.
If not the hot air will fry the GPU & you get BAD smell.

Any one object this or has some other experiences can share.
I want to know the pros & cons of the different design, so if i buy cards in future it must be a correct one.

I have patience

I do not think you will run away with my money

I am still here. Haven't run away so far.
Trying as much as i can to get money in ways i can try. So far not a big improvement.
In between, since 2 cards are lying around thought about buying a gigabyte motherboard, which angered the big bang motherboard & from yesterday keep on restarting instead of booting, displaying code "45" in the built in LED display.
MSI replied its RAM problem & also told to remove CPU & clean dust.
Now even display not working & also testing RAM in another pc in shop showed RAM is fine.
Today, sent the motherboard to MSI & waiting.
New gigabyte may be available in 2 days.

If you still want, you can call me scammer, cheat, fraud.......I deserve it.

I'm Irish/British, and I live in China.
blog.glbse.com for details.

You went to US and got deported? (and where are you from?)

I think apart from me getting deported from the US it's been a fairly slow week with GLBSE.

Any news here?

We are certainly going to get a flush out of miners, if the difficulty keeps rising at the rate it is with little or no increase in USD/BTC rate.

That said, those in strong positions (SIN company ) will be able to buy up all the equipment that miners giving up dump, on the market, driving down their costs of production.

It will be survival of the fittest - those with BTC reserves and strong wills will live, the rest will die. The beauty (?) of capitalism.

Mining is a tough business indeed. Maybe it is also pointless with such little demand for BTC.

I think effort / resources / BTC would be much better invested in building BTC businesses and services, rather than mining yet more BTC - but short term greed prevails among the miners, who are basically only fighting each other, as always.

Half the reason I created the calculator in my sig, was to try to inject some realism into those mining / considering mining - particularly through the mining contracts.

What?!?

I'd like to refer to the first page of this thread, where it was said multiple times that loaning BTC for mining is not a good idea if difficulty goes up.

To me this rather looks like the work of Capt'n Obvious!

Thank you, Captain Hindsight:

http://www.southparkstudios.com/clips/360430/captain-hindsight

No, I am saying you would have been better off doing so. Not that you did.

1 single GPU then uses on average ~470W. That's a substantial overhead, considering the cards themselves use max. ~220W each on their own.

What you trying to say by this?
you saying i never bought any hardware so far & i KEPT the bitcoin i got from selling shares & giving dividend with that?

I have 8 cards mining. 4 x 6970 & 4 x 5870. Any problem to you for mining with 8 cards?

15-20 days ago i offered to buy around 40 shares,  a share for 0.5 btc. who sold to me?

If you kept the income from shares (unfortunately information is scattered throughout this thread so I don't know exact numbers of how much of the IPO was sold) which was a few hundred BTC and handed out 100 of these BTC as dividends, you would have more money now than you have by buying stuff and having running costs.

Welcome to deflation, where only proper longterm businesses survive and give profit.

I also don't understand why, instead of buying back 12 or 13 shares as promised, you gave yet another(!) dividend!

If you meant the 3750W thingie: I divided the 90 kWh per day by 24, which means you use 3750W per hour to generate 2 BTC/day. For this you need a hashrate of ~3100 MH/s.

pardon, i don't understand. can you elaborate?

You use ~3750 Watts 24/7 for ~3100 MH/s?!

And yes, you would have been better off just holding on to BTC, making up some stories and paying a few dividends that are plausible - you would have more BTC this way now and less problems.

it is like complaining "unfortunately I've started mining in age of CPU mining and spent lots of bitcoins on my CPU's"

Unfortunately, DISHWARA was made when BTC was around 2, and several parts were bought when BTC was 8