My initial Radeon HD 7970 mining benchmarks - page 6.

DeathAndTaxes

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Quote from: bulanula on January 11, 2012, 07:34:57 AM

So much for AMD's "Fold and mine faster than ever with AMD App Acceleration powered by the unprecedented 28nm GCN Architecture."

There is nothing false about their statement. It looks like the 7970 IS the fasted mining card. AMD made no claims in terms of efficiency (MH/W or MH/$).

I mean it is like buying the fastest sports car and then saying the company lied because it costs more and has worse gas mileage than a Honda Civic.

kano

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Dare I state the obvious in reply to above ... the 7970 is a single GPU card ...

bulanula

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Quote from: Megahalem1121 on January 11, 2012, 06:57:44 AM

Quote from: 1onevvolf on January 11, 2012, 06:28:51 AM

Chapter 4.16 of the AMD OpenCL programming guide has some optimization guidelines for GCN. This snippet explains why my vectorization experiment didn't help performance:

Quote from: 4.16 Optimization Guidelines for Southern Islands GPUs

... "Vectorization is no longer needed, nor desirable." ...

Oh well, back to the drawing board! Grin

Hi, would you be able to help me set up my miner?

What's in it for us ?

On another note, 7970 and I believe the rest of the failure that is CGN will be crap for mining as far as I can see.

More power usage than 5xxx series -> crap MH/s to power consumed ratio
Much more expensive than 5xxx series -> crap MH/s to price ratio

So much for AMD's "Fold and mine faster than ever with AMD App Acceleration powered by the unprecedented 28nm GCN Architecture."

I am waiting for Nvidia to finally step up their game and come to the mining table because they are totally missing out. Their integer performance just sucks !

Also, I am quite happy because my stock of 5870s is just getting more and more demand and valuation by the day with these CGN disappointments.

Roll on AMD, to your grave !

Megahalem1121

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Quote from: 1onevvolf on January 11, 2012, 06:28:51 AM

Chapter 4.16 of the AMD OpenCL programming guide has some optimization guidelines for GCN. This snippet explains why my vectorization experiment didn't help performance:

Quote from: 4.16 Optimization Guidelines for Southern Islands GPUs

... "Vectorization is no longer needed, nor desirable." ...

Oh well, back to the drawing board! Grin

Hi, would you be able to help me set up my miner?

1onevvolf

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Chapter 4.16 of the AMD OpenCL programming guide has some optimization guidelines for GCN. This snippet explains why my vectorization experiment didn't help performance:

Quote from: 4.16 Optimization Guidelines for Southern Islands GPUs

... "Vectorization is no longer needed, nor desirable." ...

Oh well, back to the drawing board! Grin

Megahalem1121

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Hello all, Got my 7970 but I'm a total noob to mining. Kiv's GUI miner won't work with the 7970 and I'd love to try Diablo3D's miner but can't figure it out, anyone willing to help me and I'll throw a few BTC their way when I can mine a few. Thanks.

DiabloD3

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Quote from: Mousepotato on January 11, 2012, 02:32:49 AM

Quote from: DiabloD3 on January 11, 2012, 02:06:24 AM

Quote from: Mousepotato on January 10, 2012, 11:21:37 PM

Wow, that's pretty impressive! 733 MH/s is really close to what my 5970 puts down, albeit the 7970 is drawing over 100W more power at that hashing rate. Still though, that's really good for a single GPU. I can't wait to see what a 7990 will do!

5970 does 300w stock on gaming, 7970 does 250w stock on gaming. At ~300 watts, the 7970@1225mhz is doing 716 mhash, the 5970@725 on SDK 2.5 is doing 646, 671 on magical SDK 2.1. The 5970 has the advantage of being undervolted over the rest of the 58xx family and being able to run SDK 2.1.

Given that, I think AMD has produced a very impressive chip.

I'm not sure where you got that ”300W on gaming figure”, but I'm just going by my killowatt meter. At idle my system draws about 140W. Full out mining (810/200/1.050V) @ 740 MH/s it draws 350W, which tells me (using 1onevvolfs math of mining-idle=card wattage) my 5970 is pulling about 210W -- about 100W less than the 7970.

294 and 250 are the official AMD quoted figures for maximum draw on 5970 and 7970. Mining uses less power due to parts of the chip shutting off (texture units, etc), and I suspect GCN has superior power savings over 58xx in that area, if not, they're very similar (ie, 5970 doesn't draw 294 while mining at stock speeds, and 7970 doesn't use 250 by the same amount give or take).

rastapool

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Quote

I'm not sure where you got that ”300W on gaming figure”, but I'm just going by my killowatt meter. At idle my system draws about 140W. Full out mining (810/200/1.050V) @ 740 MH/s it draws 350W, which tells me (using 1onevvolfs math of mining-idle=card wattage) my 5970 is pulling about 210W -- about 100W less than the 7970.

AFAIK, 5970 takes close to 50 W in idle, and 7970 takes 3 W.
7970@1225/150/1.175 = 415-118+3 = 300W@720 mhs
5970@810/200/1.050V = 350-140+50 = 260W@740 mhs

project10

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Worth noting:

http://www.anandtech.com/show/5261/amd-radeon-hd-7970-review/14

Quote

Other than being a bit larger than the 6970 the biggest difference is that AMD is now using the same higher performance phase-change TIM that they used on the 6990, which also means that AMD is highly recommending that the 7970 not be disassembled as the TIM won’t operate nearly as well once it’s been separated. Furthermore as we found out the specific TIM AMD is using is screen printed onto the GPU, so reapplying a new TIM in the same manner is virtually impossible.

Mousepotato

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Seal Cub Clubbing Club

Quote from: DiabloD3 on January 11, 2012, 02:06:24 AM

Quote from: Mousepotato on January 10, 2012, 11:21:37 PM

Wow, that's pretty impressive! 733 MH/s is really close to what my 5970 puts down, albeit the 7970 is drawing over 100W more power at that hashing rate. Still though, that's really good for a single GPU. I can't wait to see what a 7990 will do!

5970 does 300w stock on gaming, 7970 does 250w stock on gaming. At ~300 watts, the 7970@1225mhz is doing 716 mhash, the 5970@725 on SDK 2.5 is doing 646, 671 on magical SDK 2.1. The 5970 has the advantage of being undervolted over the rest of the 58xx family and being able to run SDK 2.1.

Given that, I think AMD has produced a very impressive chip.

I'm not sure where you got that ”300W on gaming figure”, but I'm just going by my killowatt meter. At idle my system draws about 140W. Full out mining (810/200/1.050V) @ 740 MH/s it draws 350W, which tells me (using 1onevvolfs math of mining-idle=card wattage) my 5970 is pulling about 210W -- about 100W less than the 7970.

DiabloD3

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Quote from: Mousepotato on January 10, 2012, 11:21:37 PM

Wow, that's pretty impressive! 733 MH/s is really close to what my 5970 puts down, albeit the 7970 is drawing over 100W more power at that hashing rate. Still though, that's really good for a single GPU. I can't wait to see what a 7990 will do!

5970 does 300w stock on gaming, 7970 does 250w stock on gaming. At ~300 watts, the 7970@1225mhz is doing 716 mhash, the 5970@725 on SDK 2.5 is doing 646, 671 on magical SDK 2.1. The 5970 has the advantage of being undervolted over the rest of the 58xx family and being able to run SDK 2.1.

Given that, I think AMD has produced a very impressive chip.

Mousepotato

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kano

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Quote from: racerguy on January 10, 2012, 09:41:54 PM

Doesn't seem worth it with those numbers, maybe an undervolt could improve the mhash/w.

Of course the initial price isn't really a major issue unless it is way above current hardware
It's the long term running cost (unless you don't expect to run it for very long)
Even these FPGA's are priced well above the ATI card prices for similar hash rates, but since the FPGA's use a fraction of the power, long term is the reasoning behind buying them.

Starlightbreaker

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Quote from: teek on January 10, 2012, 08:38:53 PM

We grabbed a 7970 today to play with.. still on the fence if I am just going to sell it or not.. but I can confirm that the numbers in this thread are in line with what we are getting.. I have only pushed it up to 1125mhz and that's about as far as I will take it and no overvolting, but I can confirm it seems to run quite nice there doing 670MH all day..

teek

just wait until there's optimized miner & drivers.

racerguy

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Doesn't seem worth it with those numbers, maybe an undervolt could improve the mhash/w.

teek

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We grabbed a 7970 today to play with.. still on the fence if I am just going to sell it or not.. but I can confirm that the numbers in this thread are in line with what we are getting.. I have only pushed it up to 1125mhz and that's about as far as I will take it and no overvolting, but I can confirm it seems to run quite nice there doing 670MH all day..

teek

Zenitur

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I have a trouble with Radeon HD 5850 and 11.12 driver (with integrated AMD APP SDK 2.6). Linux. It is 360 MHash, but 11.10 + AMD APP SDK 2.5 gives 412 MHash. It can be a reason of slow speed of 7xxx.

A1BITCOINPOOL

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For the price I would rather get a 5870. I'm able to get 440 out of one of them and its more then half the price.

1onevvolf

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I've downloaded Sapphire's TriXX software and pushed the clocks even further, even managing to get the memory underclocked down to 150MHz:

	1150/150/1.17V	1175/150/1.17V	1200/150/1.17V	1225/150/1.175V	1250/150/1.2V
Idle :	118 W	118 W	118 W	118 W	118 W
Mining :	392 W	400 W	408 W	415 W	441 W
Difference_(gfx_card_W):	274 W	282 W	290 W	297 W	323 W
MH/s :	675MH/s	690MH/s	705MH/s	716MH/s	733MH/s
MH/J_(system) :	1.72	1.73	1.73	1.73	1.66
MH/J_(gfx_card_only) :	2.46	2.45	2.43	2.41	2.27
MH/$_(gfx_card_only) :	1.23	1.25	1.28	1.30	1.33

Power draw reaches a tipping point around 1250MHz where the core voltage needs to start getting tweaked quite a bit for stable overclocks. I have a feeling that with more exotic cooling or insane fan speeds (I stuck with 60% which as I stated earlier is already quite obnoxious) that this card is sure to go much higher. The tool didn't let me lower the voltage either, which might be an interesting thing to do to increase efficiency.

1125Mhz still has the best efficiency with 2.51 MH/J.

DiabloD3

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Quote from: 1onevvolf on January 09, 2012, 02:15:39 PM

Quote from: luo demin on January 09, 2012, 01:26:28 PM

I can't wait till the 7990 that is going to be impressive but expensive Sad

I might have missed this but what is the heat like hashing overclocked ? and what fan speed

Overclocked @ 1125/975MHz with automatic fan speed I'm getting temperatures hovering 81-83C, and the fan runs at 47-49% speed. You can see some screencaps on one of the earlier pages. But since I prefer lower temperatures and am worried about VRM and memory temps not yet being reported by GPU-Z, I usually run it at 60% fan speed and get temps around 72C. The blower fan at 60% speed is quite loud (its a reference design from Sapphire).

At 100% fan speed, the overclocked card gets below 60C while mining but you can hear it from outside of the house at this point Tongue

, so as lovely as these temps are this is not an option for me as it is also my gaming and work PC.

As a reminder, 100% fan speed is a good way to kill the fan, they were never meant to be ran that high.

Don't go above 85%.

Topic: My initial Radeon HD 7970 mining benchmarks - page 6. (Read 46791 times)