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Author Topic: The fastest HD 69xx miner. 250 BTC.  (Read 70663 times)
mrb (OP)
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May 05, 2011, 02:44:27 AM
 #61

Thanks reeses for these very precise numbers, and quality of the report. (Compared to Syke, I don't know if he was rounding up to 670 Mhash/s, and he doesn't seem 100% sure of the "2 Mhash/s" impact of memory downclocking).

I assume your numbers are without memory clock or voltage changes, right? If yes, I will update my claim to 708/666 = 6.3% faster than Phoenix as I want to convey exact numbers.
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dingus
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May 05, 2011, 06:22:51 AM
 #62

I would be interested in a 5970 optimized miner, and I know there is such a thing  Cool.

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Syke
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May 05, 2011, 07:37:36 AM
 #63

I optimized my Phoenix settings for my 6990 and installed the new 11.4 driver. At stock card settings I now get 680 MH/s, which compares very favorably with your 683 MH/s using 11.3. I have yet to try the downgrade to 11.1 trick.

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mrb (OP)
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May 05, 2011, 08:38:28 AM
 #64

I optimized my Phoenix settings for my 6990 and installed the new 11.4 driver. At stock card settings I now get 680 MH/s, which compares very favorably with your 683 MH/s using 11.3. I have yet to try the downgrade to 11.1 trick.

Is 680 Mhash/s rounded up by a few Mhash/s?

Are you saying that you, just now, improved your performance from 668 Mhash/s (as you claimed in your previous posts: "670 Mhash/s" minus the "2 Mhash/s from memory downclocking") up to 680 Mhash/s, this time without memory downclocking?
mrb (OP)
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May 05, 2011, 08:45:59 AM
 #65

No problem.  Stock voltage, gpu, memory clock settings.

Thank you. Post updated.
Syke
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May 05, 2011, 09:03:05 AM
 #66

I didn't have the optimal Phoenix settings before. And I was rounding down. Here's an actual shot:

681.06



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mrb (OP)
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May 06, 2011, 11:45:45 AM
 #67

Is this 681 Mhash/s with or without memory downclocking?
Syke
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May 06, 2011, 04:10:27 PM
 #68

681 with stock everything. 830 MH/s, etc.

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May 16, 2011, 09:55:58 PM
 #69

I have 3 ATI 5970's  with standard clock.  It is doing 1704 Mhashes/second
nster
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May 16, 2011, 10:37:16 PM
 #70

the price is now OVER 2500$++ for this? I find that ridiculous. needs another price adjustment

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Sukrim
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May 17, 2011, 11:12:12 AM
 #71

The price is exactly the same as always, only the dollar fell against the bitcoin recently... Wink

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mrb (OP)
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May 18, 2011, 02:14:50 AM
 #72

Exactly Smiley

More seriously, regardless of the BTC/USD exchange rate, my miner still produces 6.3% more Bitcoins than the 2nd fastest miner, so it makes sense for my price to be relative to the Bitcoin instead of the Dollar.

(Feels weird to say "the Bitcoin").
mrb (OP)
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May 18, 2011, 02:16:28 AM
 #73

BTW, Syke, I couldn't reproduce your numbers with Phoenix. I obtained 664 Mhash/s, which is slightly lower than reeses.
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May 18, 2011, 02:19:56 AM
 #74

the profit margin of bitcoin mining did not going up as much as the exchange rate has, so yes, this needs a price adjustment

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Sukrim
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May 18, 2011, 07:36:21 AM
 #75

the profit margin of bitcoin mining did not going up as much as the exchange rate has, so yes, this needs a price adjustment
If you look at the profit per 100MH/s, the price would rather go up than down... Roll Eyes
http://bitcoin.atspace.com/income.html

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gigitrix
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May 18, 2011, 07:51:50 PM
 #76

the profit margin of bitcoin mining did not going up as much as the exchange rate has, so yes, this needs a price adjustment
If you look at the profit per 100MH/s, the price would rather go up than down... Roll Eyes
http://bitcoin.atspace.com/income.html

Awesome site, I'm apparently making a lot more than I initially thought, and the yield is majorly more stable than I first thought...
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May 18, 2011, 07:58:32 PM
 #77

...you did NOT do these calculations yourself before starting to mine?! Shocked

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mrb (OP)
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May 30, 2011, 01:58:32 PM
 #78

I am slashing the price down to 250 BTC.

I measured my miner at 802 Mhash/sec on a properly overclocked Radeon HD 6990 (BIOS switch at "overclocked" position 1; with "aticonfig --odsc=915,1260" to further overclock the GPU to 915 MHz and mem to 1260 MHz). And 840 Mhash/sec at 960 MHz, although the hardware wasn't very stable at this speed.
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May 30, 2011, 11:16:40 PM
 #79

I am slashing the price down to 250 BTC.
your original price was 400 btc, which was less than $20(February prices). now you're selling it at 250, which is approximately $2100.

It is pitch black. You are likely to be eaten by a grue.

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lvlrdka22
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May 31, 2011, 02:04:49 AM
 #80

At stock:
Your miner numbers: 30 days 12 hours=732 hours per block
Your Phoenix numbers: 32 days 11 hours=779 hours per block
According to another guy's 6990 at stock, 680 MH/s: 31 days 18 hours=762 hours per block

People buying/using your miner will need 250 BTC=5 blocks of extra work to pay for the investment in your miner.

With your Phoenix numbers:
1/732 blocks per hour*x-5 blocks=1/779 blocks per hour*x
x=60662.55 hours=6.925 years

With 680 MH/s:
1/732 blocks per hour*x-5 blocks=1/762 blocks per hour*x
x=92964 hours=10.61 years

Congratulations, you just made a nice investment that takes more than 6 years (or 10 years) to make back, if you're going with single 6990 (assuming difficulty stays constant)!
To be able to recuperate the costs under 1 year, you'll need to be running 7x 6990s (or 11, according to another guy's 680 MH/s stock 6990).
That's not counting electricity bills.

AOCLBF 1.75: POCLBM/Phoenix GUI (Build-In OC Tool).
Barely Clocked: Clock Speed/Voltage/Fan Speed Tweaking.

If I helped, I helped!

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