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Author Topic: Hi there. 7950 questions  (Read 4102 times)
taislice
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July 27, 2012, 11:34:46 AM
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As a new member here, I'm required to post here, but I do have a few questions concerning mining with a 7950. My previous 5870s were easy to mine with, but I've downsized from a TJ07 to an ITX build and am waiting on my Bitfenix Prodigy, so it's a different game now.

I am currently using GUIMiner (v2012-02-19) and SDK 2.7 I believe. I am using the AMD 12.7 beta drivers and with an OpenCL miner my 7950 @ 1300/330 is getting about 660Mhash/s, this is with no flags. If I try to add other flags (-v or -w flags) hash rate goes down.

What direction should I be going to get better hash rate? Should I step out of GUIMiner and go with something else? I've seen 7970s get 650 easily with much lower clock rates, but I would assume a 7950 @ 1300 core should at least reach 700+Mhash/s.

Any help is appreciated and I apologize if I broke any rules with this post.
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nitrox
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July 27, 2012, 02:51:29 PM
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hi.
i got 7950 to.
still hard to config to digging LTC.

NorCalEinstein
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July 28, 2012, 05:23:08 AM
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Time to move out of GUIMiner. I recently graduated from GUIMiner to the other Windows tools where you can set more flags, or config files. With a little reading and skimming through the main threads for respective miners, it's pretty easy to get a good sense of how to get it working. There's always the Google search on things like "how to setup cgminer on win7", etc.

I went from GUIMiner to Phoenix 2.0, to CGMiner. I really liked CGMiner and wanted to make work because of the integrated ability to OC and control fan, but was having pool connection issues and was turning in a whole bunch of stale and invalid shares (0.8-0.9% over 24 hours). Now I'm back on Phoenix 2.0 doing all my overclocking with MSI Afterburner (OC limits unlocked via .cfg) and things are good. I'm squeezing more mhash out of my cards compared to GUIMiner, and my stale/invalid is starting to recover.
taislice
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July 29, 2012, 02:43:13 AM
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Time to move out of GUIMiner. I recently graduated from GUIMiner to the other Windows tools where you can set more flags, or config files. With a little reading and skimming through the main threads for respective miners, it's pretty easy to get a good sense of how to get it working. There's always the Google search on things like "how to setup cgminer on win7", etc.

I went from GUIMiner to Phoenix 2.0, to CGMiner. I really liked CGMiner and wanted to make work because of the integrated ability to OC and control fan, but was having pool connection issues and was turning in a whole bunch of stale and invalid shares (0.8-0.9% over 24 hours). Now I'm back on Phoenix 2.0 doing all my overclocking with MSI Afterburner (OC limits unlocked via .cfg) and things are good. I'm squeezing more mhash out of my cards compared to GUIMiner, and my stale/invalid is starting to recover.

Thanks for your informative post! I do already use MSI Afterburner, so I might follow your steps and try out Phoenix 2.0. Seeing as I can do 1300/330 with no tweaking, it should only get better.
cze_siek
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July 29, 2012, 04:16:48 PM
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Hello everyone

hi.
i got 7950 to.
still hard to config to digging LTC.

I read your posts in https://50.97.137.52/index.php?topic=92887.520

and i have the same problem, extremaly low kH/s on 7950, the best what I got is 293 kH/s using reaper, when  OC my gpu hashrate stay on 292 kH/s when i downclock gpu/mem 700/800 I still have the same ;/
i've tried about 30 diffrent combinations and a don't have good result at all ;/
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July 29, 2012, 06:18:45 PM
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i try a lot of combination too.
even try on xubuntu .....
here is results :
https://bitcointalk.org/index.php?topic=92887.msg1063262#msg1063262

cze_siek
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July 30, 2012, 12:23:52 PM
 #7

so what will be better 500MH/s on BTC or 290kH/s LTC ?

nitrox
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August 01, 2012, 09:27:14 AM
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i get one more 7950 and for now for me is better to digging 1.1GH/s for BTC instet 600kH/s for LTC.
do you successfully manage to get more that 290kH/s from you'r 7950 on LTC Huh

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August 02, 2012, 01:25:33 AM
 #9

so what will be better 500MH/s on BTC or 290kH/s LTC ?


Currently, 500MH/s in Bitcoins will get you around 0.22BTC a day (running 24/7, of course).
290kH/s in LTC will get you ~28LTC a day, or around 0.18BTC (running 24/7).

Fold Proteins, earn cryptos! CureCoin.
https://bitcointalk.org/index.php?topic=603757.0
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