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Other / CPU/GPU Bitcoin mining hardware / Re: Maximum 7990s per mobo?

on: June 30, 2013, 03:03:29 AM

Quote from: greaterninja on June 25, 2013, 09:59:56 PM Quote from: BlazinBeaches on June 25, 2013, 06:29:34 AM Agreed, I am curious on the hashrate. I've heard people say 1200ish but I wonder if those are unoptimized hashrates without proper settings. I have hit 1330-1340 mh/s using msi afterburner on my sapphire 7990. 100mhz ram, 0% voltage, using guiminer. If linux or cgminer its probably possible to hit quite a bit higher. Right now I run 1240-1285 mh/s range 24/7 for weeks. Temps 79C or below. 3 GPUs. *note I am only giving results for my 7990 card. It can probably hit 1376-1400+mh/s...yes I believe its possible. Do u mean 1330-1340 mh/s on each 7990 card? can u share to me how you did that cause i'm only getting around 1150mh/s per card...thanks

Other / CPU/GPU Bitcoin mining hardware / Re: Maximum 7990s per mobo?

on: June 25, 2013, 12:04:36 PM

Quote from: tom_o on June 24, 2013, 06:16:54 PM Quote from: horosho on June 24, 2013, 03:37:59 AM sorry for being such a newbie but what is stock cooling and how do you open the case for a 7990? I have two xfx 7990 but temps gets to as high as 95 degree C with a hash rate of around 500MH/s. Can someone please help me with the best configuration to maximize hashing power.....I did pay big $$$ to get them..thanks Stock cooling is the cooling already on the card. As for people referring to open case they generally mean taking the side(s) off of the computer case. For dual 7990 you also want a big fan aimed into the general pc case, 500Mhash sounds like they're throttling back due to getting too hot! Thanks Tom_o!!! Do I still need to use a crossfire for 2 xfx 7990? Also, just wondering what type of fans are the best to cool down the cards?

Other / CPU/GPU Bitcoin mining hardware / Re: Maximum 7990s per mobo?

on: June 24, 2013, 03:37:59 AM

sorry for being such a newbie but what is stock cooling and how do you open the case for a 7990? I have two xfx 7990 but temps gets to as high as 95 degree C with a hash rate of around 500MH/s. Can someone please help me with the best configuration to maximize hashing power.....I did pay big $$$ to get them..thanks

Other / CPU/GPU Bitcoin mining hardware / Re: GUI mining - updated Dec 3 with 7970 bugfix, also supports Stratum!

on: June 20, 2013, 05:29:00 AM

switching to the older version has no problems so far

Bitcoin / Mining support / Re: GUI MINER CRASHING! Solution?

on: June 20, 2013, 03:54:17 AM

you can have the first coin i mine if it works

Bitcoin / Mining support / Re: GUI MINER CRASHING! Solution?

on: June 20, 2013, 03:53:30 AM

hi george, kindly paste the actual script here ...thanks

Bitcoin / Mining support / Re: GUI MINER CRASHING! Solution?

on: June 19, 2013, 06:05:11 PM

can u please! please! post a step-by step solution to exactly what you did. i am having the same problem with XFX7990. hash rate keeps dropping from 500MH/s to 100KH/s after 4-5 minutes after i get a " Communication Problem" message. I am not a programmer so I'm kinda not familiar with hotkeys..thanks

Other / Beginners & Help / Re: New Radeon 7990 fluctuating hash rate..

on: June 19, 2013, 05:49:07 PM

I am having similar problems with XFX 7990 using GUIMiner. The hash rate fluactuates and then after 4-5 minutes I get a "Connections Problem" message and then the hash rate drops from 500MH/s to 100KH/s. Anyone know how to fix this? pls advise...thanks

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 05:47:01 AM

that's all we can do right now

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 05:32:51 AM

what is the point to making us suffer for 4 hrs???

Other / Beginners & Help / Re: Sapphire 7990 Extremely Hot Running CGminer - Need Suggestions

on: June 19, 2013, 05:28:57 AM

i am using GUIminer with my 7990 and keep getting a "problem communicating" error every 3-5 minutes interval. Anyone know why and how to fix it please let me know.....my hashrate drops from 500GH/s to 100KH/s when this happens....

Other / Beginners & Help / Re: Sapphire 7990 Extremely Hot Running CGminer - Need Suggestions

on: June 19, 2013, 05:00:29 AM

i am using GUIminer with my 7990 and keep getting a "problem communicating" error every 3-5 minutes interval. Anyone know why and how to fix it please let me know.....my hashrate drops from 500GH/s to 100KH/s when this happens....

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 04:47:15 AM

can someone help me with my GUI miner using a 7990? I keep getting an error message saying "Problems communicating" almost every 4-5 minutes and then the hash rate drops from 500GH/s to 100KH/s. Thanks for your help in advance

Alternate cryptocurrencies / Altcoin Discussion / Re: FREE FastCoin Giveaway!

on: June 19, 2013, 04:43:31 AM

what are fastcoins?

Alternate cryptocurrencies / Altcoin Discussion / Re: [FTC] Free FeatherCoin Giveaway for Everyone! While supplies last.

on: June 19, 2013, 04:40:47 AM

what is feathercoin?

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 04:38:57 AM

i just saw my status as brand new....what does that mean?

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 04:38:04 AM

can someone clarify what i need to do to be able to post a new topic or reply to a topic that i want to join please? thanks

Other / Beginners & Help / Re: getting past newbie

on: June 19, 2013, 04:36:54 AM

how come i cannot see the reply button on a topic i wanted to join?

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