Bitcoin Forum
December 09, 2016, 03:45:54 PM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Faster than Phoenix  (Read 4111 times)
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 10:36:13 AM
 #1

I apologize for the shameless plug. Apparently some in the Mining subforum don't read the Marketplace subforum, so I would like to say:

There is a miner faster than Phoenix (+9%) on the HD 6990, it's called hdminer.
(It is not free, so do the math to determine whether its price is worth it or not for you.)
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
TurdHurdur
Full Member
***
Offline Offline

Activity: 217


View Profile
April 29, 2011, 10:51:29 AM
 #2

A current mtgox exchange rate value of $836.50 US... Ouch, I've never paid that much for software. Is there 24/7 support?
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 11:08:38 AM
 #3

A current mtgox exchange rate value of $836.50 US... Ouch, I've never paid that much for software. Is there 24/7 support?

I operate on a best effort basis via email or skype. I have asked customers to post testimonials in the hdminer thread to give you an idea of how good/bad my support is. (Don't trust me. Trust my users.)
Littleshop
Legendary
*
Offline Offline

Activity: 1316



View Profile WWW
April 29, 2011, 11:11:33 AM
 #4

You would need to be running 8 6990's for that to pay off vs buying another card.


I am glad your price is so high. If it was lower it would distort the mining market and I would be
Forced to buy it to keep up.  At that price so few people buy it there is little impact.

Raulo
Full Member
***
Offline Offline

Activity: 238


View Profile
April 29, 2011, 11:23:43 AM
 #5

You would need to be running 8 6990's for that to pay off vs buying another card.

Assuming Phoenix (or any other open program) will not catch up. For 5xxx series, this assumption has proven false fairly quickly.

1HAoJag4C3XtAmQJAhE9FTAAJWFcrvpdLM
Grinder
Legendary
*
Offline Offline

Activity: 1269


View Profile
April 29, 2011, 11:29:13 AM
 #6

I am glad your price is so high. If it was lower it would distort the mining market and I would be
Forced to buy it to keep up.  At that price so few people buy it there is little impact.
And of course, if anybody has purchased it and found that it works really well it would be stupid to tell others. Anyway, 9% seems like an exaggeration. I get ~360 Mhash at 880 MHz on my unlocked 6950 with poclbm, so a 6990 should give 720 at the same speed. That's even without "cheating" by using dynamic speed.
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 11:34:30 AM
 #7

Assuming Phoenix (or any other open program) will not catch up. For 5xxx series, this assumption has proven false fairly quickly.

Well, it was not fairly quick. It took 4 months, from January to April, for an open source miner to catch up.
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 11:43:40 AM
 #8

Anyway, 9% seems like an exaggeration. I get ~360 Mhash at 880 MHz on my unlocked 6950 with poclbm, so a 6990 should give 720 at the same speed.

Not 720 but 679: 2*830/880.*355 = 679 Mhash/s theoretical. However the best I have seen reported by a Phoenix user on 6990 at 830 MHz is 650 Mhash/s. 708/650 = 9%.

But I agree that quoting a percentage of performance improvement is not ideal... there seems to be such a wide variation across all Phoenix users (due to OpenCL's complexity and CPU usage bug) that it is hard to give a % number that everyone will agree upon. Some Phoenix users even measure much less than 650 Mhash/s on the 6990. What I can promise though is the exact perf numbers I quoted in the hdminer thread: 708 Mhash/s at 830MHz and 746 Mhash/s at 880MHz.
Raulo
Full Member
***
Offline Offline

Activity: 238


View Profile
April 29, 2011, 11:55:11 AM
 #9

Well, it was not fairly quick. It took 4 months, from January to April, for an open source miner to catch up.

Not really. It took 3 months to be ahead (late January to late April is 3 months on my calendar) but poclbm caught up in early February (4th to be pricise), i.e. in 10 days from your first hdminer post.  For 5970, I got 570 MH/s at stock clock with the February version and there were a lot of reports of 565-570 MH/s at stock clock depending on SDK/system/driver/options.  Earlier poclbm versions were a few percent slower so hdminer was an improvement at that time. But only for 10 days.

1HAoJag4C3XtAmQJAhE9FTAAJWFcrvpdLM
Grinder
Legendary
*
Offline Offline

Activity: 1269


View Profile
April 29, 2011, 12:09:08 PM
 #10

Not 720 but 679: 2*830/880.*355 = 679 Mhash/s theoretical. However the best I have seen reported by a Phoenix user on 6990 at 830 MHz is 650 Mhash/s. 708/650 = 9%.
I'm not sure what you're saying no to, I get slightly above 340 Mhash at 830 MHz with -f 1.
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 12:27:45 PM
 #11

I'm not sure what you're saying no to, I get slightly above 340 Mhash at 830 MHz with -f 1.

("no" to the 720 number).

Good. I want to collect accurate data, so: stock shader clock as well as stock memory clock? No changes of the PowerTune settings? No GPU voltage mod? No mem voltage mod?

Raulo: I was selling my miner privately in early Jan. And I was using it since Dec. Hence 4 months. Not sure about poclbm. On the contrary, most users seemed to have trouble finding the magic catalyst/sdk/flag combo to reach acceptable speeds. The simplicity of hdminer bypassing the whole OpenCL layer is part of the value I sell. And again, many users who report perf numbers at "stock GPU clock" don't tell you they tweak the mem clock or voltages which influence performance (edit: case in point: Grinder in this thread). Also, some 5970 models are factory-overclocked to 735MHz up from 725MHz. Users may forget this detail when comparing numbers between their 5970s.
Grinder
Legendary
*
Offline Offline

Activity: 1269


View Profile
April 29, 2011, 01:02:35 PM
 #12

Good. I want to collect accurate data, so: stock shader clock as well as stock memory clock? No changes of the PowerTune settings? No GPU voltage mod? No mem voltage mod?
Shader clock can't be changed separately and GPU voltage doesn't influence speed. I have voltage at 1.02 for 830 MHz and 1.1 for 880 MHz. Memory speed is set to 150 MHz.
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 29, 2011, 01:21:25 PM
 #13

Shader clock can't be changed separately and GPU voltage doesn't influence speed. I have voltage at 1.02 for 830 MHz and 1.1 for 880 MHz. Memory speed is set to 150 MHz.

That's what I was talking about... On a stock card you will not observe the same Phoenix performance.

Voltage does influence speed. It changes power consumption, which is detected by PowerTune, which in turns dynamically adjusts the clock to make the speed vary by +/- 3-4% in my experience. Temperature also influences power consumption. And voltage influences temperature. It's all intertwined and makes benchmarking very difficult, especially when arguing about a few percents of speed difference.

Reducing memory speed also often modifies (either decreases or increases) performance, depending on the compute shader.
JWU42
Legendary
*
Offline Offline

Activity: 1484


View Profile
April 29, 2011, 01:48:55 PM
 #14

mrb - I had posted early in the phoenix thread questioning how close this was to your hdminer.  Seems you are still ahead of the pack on a 6990?!?

On a 5970, with Phoenix 1.3, 815/300 and stock voltage I am at 725 (362.5 per).  I know there has been talk that the hash rate reported by Phoenix is "questionable".  FWIW I get the same results (725) with the latest poclbm (with BFI_INT).



GPG PubKey | THREEMA | OTC | HeatWare | 1JWU42QLGFESoQCC4iPzUDTRiC9nx5bi95
TheShoura
Member
**
Offline Offline

Activity: 98


Testing


View Profile
April 29, 2011, 04:53:33 PM
 #15

yeah Phoenix miner has been the slowest on my 5970
Phoenix minder nets just under 600 (593)
poclbm is doing 660-670
GUI miner doesn't even launch cus it doesn't see my 5970 lulz

I'm buying a 6990 soon though, so I may have to start testing more again

If you would like to send me a tip: 1HVGGWGWgHkyh9K8sntkZmXoiopX8Bsvv8

Security: 8452BCD9
ALWAYS gpg ident the person you're about to exchange with!
Syke
Legendary
*
Offline Offline

Activity: 2086


View Profile
April 29, 2011, 05:36:48 PM
 #16

With Phoenix on a straight stock 6990 I get 670 mhps.

Buy & Hold
TheShoura
Member
**
Offline Offline

Activity: 98


Testing


View Profile
April 29, 2011, 05:38:11 PM
 #17

With Phoenix on a straight stock 6990 I get 670 mhps.

Try pushing the clock up to 850-900.. should run no problem

If you would like to send me a tip: 1HVGGWGWgHkyh9K8sntkZmXoiopX8Bsvv8

Security: 8452BCD9
ALWAYS gpg ident the person you're about to exchange with!
qed
Full Member
***
Offline Offline

Activity: 196


View Profile
April 29, 2011, 10:25:02 PM
 #18

I'm getting 351 Mhash/s under Windows 7 from an unlocked hd 6950 using the latest poclbm -f 60 (97% GPU usage). From your datas 702 Mhash/s vs 708 Mhash/s. An 8,6% higher hash rate for over $700 in not a so good deal. Buying a new card is a far better investment for most of the people.

Mobile App (Android)

Monitor miners, exchange rates and Bitcoin network stats.
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!