Bitcoin Forum

set 1: (with core 1080 mhz)

http://upanhviet.net/?di=VZ3X



set 2: (with core 1015 mhz)
speed: 710 - 715 khs

If you interested in, pm me ! I will give you the setting ! (If it's useful for you, please donate me  ;D)
btc: 1vEBBSSYfhJEoe3qKko4C8E3gxPeKtmFu
ltc: LPXNzTPrznKqFxZTMCf6Uz8oqc1mJsC5tU
nvc: 4PoeERgVTj8eaAUjcxjoRR5zpBYKR8j4xs (in case you want to donate me nvc)

You know, With hd7970, It's nearly impossible to go 700 khs before ! But not now ! With only core speed 1015 mhz you can go above 700 khs ! The temperature is much lower than bitcoin 700mhs ! (From now on, it's true)

You must have at least 3.5 gb ram with windows 7 64 bits to run these setting ! Just message me !

core speed 1080 mhz, mem 1600 mhz, thread_concurrency 21712, 24000 or 28000, aggression 20?

You're saying 3.5 gbs of ram, do you have the thread_concurrency even higher?

What is the speed as reported by the pool (not reaper)?

speed pool reported is incorrect, because it is temp@!calc coin with speed instead of. And let see if your 24h coin equal what y have calc

sr 4 poor eng

Show your reaper config file text?

I'm guessing its what I put above. Amd had been working on driver fixes for the 7970 that improved performance, I'm guessing they're out now and it finally works okay with reaper

No, driver isn't the problem ! 12.8 or 13.1 is the same !

This is my graph (with two 7970, sometimes I turn them off)
http://upanhviet.net/?di=UOEC
I'm busy right now ! I will pm some of you later !

Please PM me, I'm interested as to how you do this.

Ah good, now you know you want to buy one of these in .au
http://www.ebay.com.au/itm/321078892195?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

I get about 524 Khs with this

reaper config:

kernel reaper.cl
save_binaries yes
enable_graceful_shutdown no
long_polling yes
platform 0
device 0
# Tahiti

mine litecoin

Litcoin config:

host notroll.in
port 6332
user maunderingcabal.1
pass 12345

protocol litecoin

worksize 256
vectors 1
aggression 13
threads_per_gpu 1
sharethreads 32
lookup_gap 2
gpu_thread_concurrency 10240

help me get more.

OP
post your settings

Have replied all the pm !

send me the guide too, if it really works i will donate ltc ;)

EDIT:
got it, but cannot get it to work, it wants higher lookupgap
nvm, i sent you 1 ltc  :P

For anyone trying to do this, they just use a different core:memory ratio (0.57 instead of 0.68 for 7950) and memory overvolting to achieve these hash rates.

Eg core 900 mhz, core voltage 0.975v, memory 1575 mhz, memory voltage 1.6v (stock should hit this, though), thread_concurrency 21712

So does anyone have the settings that will achieve over 700khs?

me ^^

I can get 760-800 Kh/s using my 5970 with cgminer -scrypt. Costs a lot less than a 7970 too.

power@@

So can you post your settings/details?

Sorry this is not helpful considering the title of the thread and topic being discussed.  I can also get high hash rates on a 5970 but we're discussing how to get the best hash rates out of a 7970.

I'm also interested in this, PM me the details and if it works you get a donation.

Already posted settings... see sig thread

Tacotime, your thread was the first place I started when configured my setup, thanks for that by the way.  However, I am only able to output around 515kh/s using the config settings you posted.  Here's what I've tried to no avail:

My system: Win 7 x64 (i7 920, 16GB Ram, XFX 7970 Black 1Ghz)
Drivers: I've tried 12.7, 12.8, 13.1, 13.2 beta 7 (12.8 worked best)
SDK: I've tried 2.6, 2.7, 2.8 (doesn't seem to change hash rate so stuck with 2.8)

Core: 900 Memclock: 1575

Reaper Config:



For some reason aggression 13 works better than 20 on my card and looking at the listings in the Litecoin Mining Hardware comparison https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison (https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison) that's getting the best results.  I'm stable at 20 but hash rate is reduced significantly.  I've also tried a bunch of different thread concurrency settings without any luck.  I'm considering returning this card and just getting another 5970 but I'd like to see if I can max out the settings for comparison before I do that.

I also tried CGMiner but got around the same numbers.  Any help would be appreciated.

They're using core speeds up to 1100 mhz and reaper with aggression 18, 19, or 20. They're also running the memory up to 1800 mhz+ by overvolting it in afterburner (eg 1.7v instead of 1.6v stock).

And obviously set power limiter to +20%.

The only other thing they do differently is set share threads = 5 and don't set the vectors value to anything, so try that too I guess.

So the goal is to keep a .57 ratio?  1000/1755, 1100/1930 etc....

And by saying vectors values are nothing does that mean 0 or leave it stock?

Yes

And just don't put it in the config

I'm using a 7950 BTW.

950/1670

Work 256
Aggress 20
Share 5
Concurrency 24576

I removed vectors

Getting 2.5% GPU errors now

When going back to

1050 volt
20 power
1000 core
1450 mem
1600 mem volts

I'm getting 540mhs with 1.5% stale and 0 GPU errors.

 I want moar hash!