7970 MAXIMUM KH/S ONLY 600???? *****1000 DOGECOIN REWARD**** - page 2.

Silvano

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Quote from: tenaciouzd on January 29, 2014, 01:04:45 AM

have you tried using sgminer yet? i just switched a rig over to it tonight and I am now getting 670khs on my 7950

http://www.reddit.com/r/litecoinmining/comments/1va8g2/ann_sgminer_400_release/

i use sgminer too.

can you post your file conf and watt usage for this 7950's results?

TheQueen74

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Quote from: evovi on January 29, 2014, 05:02:12 PM

Thanks..... i tried flashing the bios you mentioned, flashed successfully in DOS. But the card doesn't like the bios and failed to boot. So i flashed the stock bios back. Can you suggest another bios to try?

OK I found something which should do the trick in the bunch of my bookmarks :
https://www.weminecryptos.com/forum/topic/1080-low-hash-7970-please-help/?p=7219

Also when you search for problems on a particular card you should use its reference like 21197-00-40G in ggl.

700KH is on the way

drakoin

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Quote from: evovi on January 29, 2014, 05:02:12 PM

Can you suggest another bios to try?

Yes. Make your own. Take the original BIOS, and tweak it, e.g. with VBE7.

Strategy described the green banner here:
https://bitcointalksearch.org/topic/m.4500529

HTH
:-)

evovi

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Quote from: TheQueen74 on January 29, 2014, 10:48:18 AM

Quote

my bios is 015.012.000.004.000346 if you can recommend a particular bios i should try let me know. and i will try flashing it using a bootable usb stick, atiwinflash has worked in the past for me. but maybe i got lucky? cant brick my cards dual bios Cool

I would try Sapphire.HD7970.3072.120926.rom with the settings and howto I posted before. Let me know what you get, it's something I'm interested in. Also remember you have a switch on the card whitch let you chose between 2 positions for flashing (switching it back permits to 'unbrick' the card because you switch to the standard stock bios).

Considering what has been said about undervolting the 7970s, I would say from my experience that you cannot have high kHs and low consuptions ont those cards (7950 can). I tried to undervolt Sapphire VaporX 7970 (I modified Sapphire.HD7970.3072.120926.rom to 1,081V ) but you instantly get something instable in hashrates > 600kHs.

Thanks..... i tried flashing the bios you mentioned, flashed successfully in DOS. But the card doesn't like the bios and failed to boot. So i flashed the stock bios back. Can you suggest another bios to try?

TheQueen74

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Quote

my bios is 015.012.000.004.000346 if you can recommend a particular bios i should try let me know. and i will try flashing it using a bootable usb stick, atiwinflash has worked in the past for me. but maybe i got lucky? cant brick my cards dual bios Cool

I would try Sapphire.HD7970.3072.120926.rom with the settings and howto I posted before. Let me know what you get, it's something I'm interested in. Also remember you have a switch on the card whitch let you chose between 2 positions for flashing (switching it back permits to 'unbrick' the card because you switch to the standard stock bios).

Considering what has been said about undervolting the 7970s, I would say from my experience that you cannot have high kHs and low consuptions ont those cards (7950 can). I tried to undervolt Sapphire VaporX 7970 (I modified Sapphire.HD7970.3072.120926.rom to 1,081V ) but you instantly get something instable in hashrates > 600kHs.

Nthused

legendary

Activity: 1554

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Try these settings, they work for me on my Gigabyte R9 280x (rebranded 7970) and I get 720-730kh/s with 0 to very low HW errors/rejects

--scrypt -o stratum+tcp://Pool:Port -u Miner -p password -g 2 -w 256 -I 13 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1055 --gpu-memclock 1500

You should be hitting over 700kh/s with those settings mate Wink

If not adjust your GPU Engine & Memclock to your cards settings if different to above.

(Use with either cgminer or BFGminer)

tenaciouzd

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have you tried using sgminer yet? i just switched a rig over to it tonight and I am now getting 670khs on my 7950

http://www.reddit.com/r/litecoinmining/comments/1va8g2/ann_sgminer_400_release/

drakoin

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Quote from: Silvano on January 28, 2014, 07:45:00 PM

for best profit, see this thread: https://bitcointalksearch.org/topic/save-money-undervolting-7970-xfx-self-made-vbe7-bios-table-of-contents-395004

yesssss, I was about to suggest that, too :-) Thanks Silvano.

I almost physically crawled into my XFX 7970 ... and it's all documented there.
Would be interesting to see for me, how similar/different a sapphire 7970 is.

Happy mining!

---
P.S.: Let's spread the word, imagine the altcoin network starts saving 1/4, 1/3 or even 1/2 of electricity.

tenaciouzd

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i know he is using a 7970, just wondered, but he has clarified.

i am running stock volts and 1075/1500

Silvano

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Quote from: tenaciouzd on January 28, 2014, 06:28:13 PM

any reason why -i 13 and not -i 20?

I get 650khs on my 7950, but if I do -i 13 my khs is significantly lower

nice hash rate, but.. how many wolts?
i run a 7950 undervolted at 1.049, and it run stable @556kh/s for a consumtion of 188w (only the card) 265 at the wall.

so i'm trying to reach best result Khs/watt, actually i'm around 2.96khs per watt, but i think it can do better.

for OP you search best performance in Khashr or best profit?

for best profit, see this thread: https://bitcointalk.org/index.php?topic=395004.60

EDIT: if i run "-g 1" command, i have best results in hashrate at I 19, I 20 few more hashrate but lot of reject, I 21 and above khash drop a lot. if i run "-g 2" command, i have best result at I 13, oll the others hashs drop. have a sapphire hd 7950 cod. 11196-19-20g

evovi

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Quote from: tenaciouzd on January 28, 2014, 06:28:13 PM

any reason why -i 13 and not -i 20?

I get 650khs on my 7950, but if I do -i 13 my khs is significantly lower

as stated in first post "as soon as I change any of the following my kh/s drops alot.........higher intensity"

Quote from: TheQueen74 on January 28, 2014, 06:58:54 PM

Quote from: tenaciouzd on January 28, 2014, 06:28:13 PM

any reason why -i 13 and not -i 20?

I get 650khs on my 7950, but if I do -i 13 my khs is significantly lower

i13 is too low for 7950s. On my 5x 7950 MSI TF3 rig I use i19 as i20 gives too much rejected shares. But on this thread we are talking about 7970 and settings are totally different

and yes you are right. I have another mining pc with a 7950, and I run it at I 19. and as you mentioned we are talking about a 7970, and it doesnt like anything above I 13

TheQueen74

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Quote from: tenaciouzd on January 28, 2014, 06:28:13 PM

any reason why -i 13 and not -i 20?

I get 650khs on my 7950, but if I do -i 13 my khs is significantly lower

i13 is too low for 7950s. On my 5x 7950 MSI TF3 rig I use i19 as i20 gives too much rejected shares. But on this thread we are talking about 7970 and settings are totally different

tenaciouzd

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any reason why -i 13 and not -i 20?

I get 650khs on my 7950, but if I do -i 13 my khs is significantly lower

evovi

newbie

Activity: 14

Merit: 0

Quote from: TheQueen74 on January 28, 2014, 05:30:13 PM

Quote from: evovi on January 28, 2014, 04:53:18 PM

why cant I use atiwinflash to flash bios???

I didn't used atiwinflash but i would say it "might" work. The important thing to notice is that you can't write a bios correctly on machine where drivers are installed. I know it because as you I failled to flash the bios this way. The result is a bricked GPU and there is no other way but flashing the original bios back, if possible.

So the good reciepe for flashing is : get a compatible bios from techpowerup, flash it using a win98 usb stick in command line. The atiflash.exe I used was v3.99 as 4.17 was not working.

Can you give me the reference of your bios like 015.022.000.001.000000

my bios is 015.012.000.004.000346 if you can recommend a particular bios i should try let me know. and i will try flashing it using a bootable usb stick, atiwinflash has worked in the past for me. but maybe i got lucky? cant brick my cards dual bios Cool

TheQueen74

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Activity: 87

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Quote from: evovi on January 28, 2014, 04:53:18 PM

why cant I use atiwinflash to flash bios???

I didn't used atiwinflash but i would say it "might" work. The important thing to notice is that you can't write a bios correctly on machine where drivers are installed. I know it because as you I failled to flash the bios this way. The result is a bricked GPU and there is no other way but flashing the original bios back, if possible.

So the good reciepe for flashing is : get a compatible bios from techpowerup, flash it using a win98 usb stick in command line. The atiflash.exe I used was v3.99 as 4.17 was not working.

Can you give me the reference of your bios like 015.022.000.001.000000

evovi

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Ive tried flashing 2 different bios's on my 7970, both failed to even boot after. so ive just flashed the stock bios back for now. TheQueen74 why cant I use atiwinflash to flash bios???

TheQueen74

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I was digging into my bookmarks and I think you can have a look at these links :

1 - find an appropriate ROM bios for your card here : http://www.techpowerup.com/vgabios/index.php?manufacturer=Sapphire&model=HD+7970
2 - instructions for flashing with atiflash from here : http://www.cryptobadger.com/2013/10/undervolting-in-linux-via-modified-bios/ ( just skip the part concerning the bios edit )

Notice you must run atiflash from a DOS flash usb stick. It wont work if you flash directly from windows.
You will also need your actual bios version (see picture) to get a compatible one from link 1

when at the DOS command line, you get the card/adapter number and the bios version using this command:

Code:

atiflash.exe -ai

For flashing (DOS command line):

Code:

atiflash.exe -f -p adapter_number your_new.rom

evovi

newbie

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Quote from: Watchy312 on January 28, 2014, 05:43:16 AM

I think your card may be too hot, do not trust your sensor completly, set your fan speed to 100% and see if the hashrate increase

as i said in the first post the card isnt getting hot.

Quote from: TheQueen74 on January 28, 2014, 12:21:02 PM

People had bad luck using those cards but they are as good as (better than?) others.

What kind of 7970 do you have ? I'm running a rig with 5 Sapphire 7970 VaporX ( 11197-12-40G ) and at first it was a slooooow 550 kHs / card... Bad.
Now I can get 700-710 and its stable as a rock.

The key was :
1 - flash the card bios ( for me Sapphire.HD7970.3072.120926.rom was the right one )
2 - Update system drivers to amd-catalyst-13.12 and amdapp_2-9 (I'm runnig Linux, don't know if it's the case for you).
3 - Those settings are important :
"intensity" : "13",
"thread-concurrency" : "8192",
"gpu-engine" : "1040",
"gpu-memclock" : "1500",
"gpu-powertune" : "0",
"gpu-threads" : "2",

Ask me if you need more informations about flashing the bios, its not an easy part if you have not done that before

thanks for your help!! My card is a sapphire 7970 (stock cooler) exact model is above in another post, Yes i have flashed bios, only a week ago i flashed another card of mine (a 7950) made a noticeable improvement. Ill give it a shot and report back

TheQueen74

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People had bad luck using those cards but they are as good as (better than?) others.

What kind of 7970 do you have ? I'm running a rig with 5 Sapphire 7970 VaporX ( 11197-12-40G ) and at first it was a slooooow 550 kHs / card... Bad.
Now I can get 700-710 and its stable as a rock.

The key was :
1 - flash the card bios ( for me Sapphire.HD7970.3072.120926.rom was the right one )
2 - Update system drivers to amd-catalyst-13.12 and amdapp_2-9 (I'm runnig Linux, don't know if it's the case for you).
3 - Those settings are important :
"intensity" : "13",
"thread-concurrency" : "8192",
"gpu-engine" : "1040",
"gpu-memclock" : "1500",
"gpu-powertune" : "0",
"gpu-threads" : "2",

Ask me if you need more informations about flashing the bios, its not an easy part if you have not done that before

Take a look at my rigs on my pool main page

https://www.mining-pool.co.uk/

sighle

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Quote from: evovi on January 28, 2014, 01:39:57 AM

Quote from: sighle on January 28, 2014, 12:17:51 AM

Having the "shaders" value at 0 means that it will default to whatever the native value would be for the GPU so changing that won't do anything.

OP; What is the exact model number on the sticker on the back of your GPU? It should look something like FX-797A-**** If it has a V1.0, 2.0 or 5.0 list that too.

I would say you might need to flash a new BIOS to your card but getting ~600 is higher than most people(including myself) get without a BIOS flash. This tells me that you have a setting issue. If you tell me the model number I can help tweak it.

PN: 299-1E208-000SA and SKU#21197-00

in GPU-Z is says REV: N/A so i guess its 1.0??? Many thanks in advance for help!!

Try this:

"intensity" : "13",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "2",
"thread-concurrency" : "8192",
"shaders" : "0",
"gpu-engine" : "925",
"gpu-fan" : "65-65",
"gpu-memclock" : "1550",
"gpu-memdiff" : "0",
"gpu-powertune" : "20",
"gpu-vddc" : "0.000",
"temp-cutoff" : "95",
"temp-overheat" : "85",
"temp-target" : "75",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "5",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "5",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"

Topic: 7970 MAXIMUM KH/S ONLY 600???? *****1000 DOGECOIN REWARD**** - page 2. (Read 6207 times)

Topic: 7970 MAXIMUM KH/S ONLY 600???? *1000 DOGECOIN REWARD - page 2. (Read 6207 times)