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Author Topic: The fastest HD 69xx miner. 250 BTC.  (Read 61897 times)
mrb
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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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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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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?
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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
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May 06, 2011, 11:45:45 AM
 #67

Is this 681 Mhash/s with or without memory downclocking?
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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
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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
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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").
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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
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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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