So no luck with 6950s?
No luck. When I was here, I mined MMC with the 7970 and scrypt with the 6950 |
|
|
|
|
I've read the last few pages and I honestly don't get the posters itt who want and demand improvements that do not increase accepted hashes and profit
Guys, let it go. miners don't care about cute website, options, detailed statistics... They point their rigs to what gives them more BTC per Mh or has higher uptime or lower latency. Burdening the pool operators with such requests does not allow them time to investigate and react quicker to more profitable coins and tune the trading algos.
|
|
|
|
|
Set CPUMiner to idle priority and use 1 less threads than the ones your CPU has. Put cgminer in realtime priority
In a batch file, use for example if your CPU has 8 threads
"start /low /affinity 7f minerd.exe ..."
"start /realtime cgminer.exe --config ..."
That 7f is a mask in hexadecimal (=01111111 binary) that prevents the cpu miner to use the last thread, leaving it free for cgminer and windows
|
|
|
|
You pay 60$ a chip, they pay 1$. They will push as many GH/sec as they can as fast as they can and mine themselves. For them, these chips pay themselves back measured in hours.
If anyone is dumb enough to buy their chips, they will put out several dozen for every one you buy, funded entirely by you.
Scrypt is dead.
Scrypt on GPUs is only dead when the hashrate on network surpasses by a long shot the # and valuation of shitcoins generated, marketed and entering exchanges every single day. I've been mining memorycoin which isn't scrypt for a few days though. In the best days, I got 3x the profit and the GPUs use ~60W each instead of 150 |
|
|
|
PTCs, CPA offers, affiliate links, trading, services, make and sell software...? What are you guys up to?  |
|
|
|
600GH is going to be as good as a usb block eruptor is now
Yeah. 14 to 16 Petahashes on the network. Insane! |
|
|
|
|
Up to 90ºC on the core and unknown at the VRMs? No risers, no undervolt, no space between cards, accumulating dust?
Understand: you must do _something_ to fix that problem. Not saying that it's ok now, and hope. You're degrading those cards fairly quickly.
Being "maxed out" or not is barely relevant. That "maxed out" is for casual use of the devices as intended (e.g. a few hours a day with 3d gaming loads), not 24/7 mining with the conditions above.
|
|
|
|
|
Oh, I see. Sorry about that...
Ok, skip the bios flashing but it's just that you're pushing the cards to the limits.
Do you have good ventilation? Do you have PCI-e risers so that the cards are spaced? Are the fans running at 70%?
Use at least a large fan (those household ones) blowing at the back of the cards and get PCI-e risers
|
|
|
|
Then use one card at a time.
First of all, lower your target temperature from 80ºC to 70ºC on miner config
Load GPU-z and select the "Sensors" tab. Scroll down to see the VRM temperature. Then, load you miner software with intensity = 8 and start mining. Raise intensity bit by bit and check those temperatures!
Are you undervolting the cards? If not, do so with VBE7
Actually I have all 3 cards running now. I was earlier overclocking the 7950 and that seemed to make an impact on the other 280xs hashrate as well. Weird. I have not undervolted any of the cards. Now the cards are running at about 80% +- 5 fanspeed. And this time I have not overclocked the 7950. I have GPU-z loaded now and had it earlier too. For one of the 280x it shows VDCC from 1.056 V to 1.044 V. About the VRM I can not find that in GPU-z under sensors. All I see is voltages and fan speed, etc Hashrates now are : 280x - 710 khps earlier was 750 khps (when 7950 was overclocked to E - 1020 M - 1420) 280x - 690 khps earlier was 750 khps (when 7950 was overclocked to E - 1020 M - 1420) 7950 - 560 khps earlier was 650 khps (when 7950 was overclocked to E - 1020 M - 1420) So they are not running at full speed. About the temperature : They have always run @75 + ... right now at about 78-79 ish and I always have a fan blowing air on them. Since my cards are not undervolted .. what do you mean by VBE7 ? So, you insist on running 3 non-undervolted cards side by side without knowing the temperature of the voltage regulators??? I asked you to STOP and follow my advice. The intent of that rushed post was clear. Yet you ignored it... Good luck, I guess |
|
|
|
|
imho by this order, but the current prices cause distortions:
7950
280x
7970
Some 270x or 270 with GDD5 5600+
R9-290 with custom cooler.
7990
Some 7870 and 270
R9-290 with stock cooler
6950
6970
5850 and 5870
6990
5970
The R9-290 are in the middle because afaik they cannot be volt modded with VBE7 or other utility. If I'm wrong, then they climb up to near the 280x
That said, the last ones can sometimes be the best if you get them for the right prices.
For example, it's ok to buy an used 7950 at $200, while it becomes silly at $300 or even less
I had a bad experience with 2 6950's in Crossfire, but that was some time ago
|
|
|
|
|
I lost a 6950 exactly like that due to poor ventilation of the VRM area
use one card at a time.
First of all, lower your target temperature from 80ºC to 70ºC. Set also the fans to at least 60 - 70%
On the miner config
"gpu-fan" : "60-90",
"temp-cutoff" : "78",
"temp-overheat" : "74",
"temp-target" : "70",
Load GPU-z and select the "Sensors" tab. Scroll down to see the VRM temperature. Then, load you miner software with intensity = 8 and start mining. Raise intensity and check those temperatures!
Are you undervolting the cards? If not, do so with VBE7
|
|
|
|
|
STOP! Shutdown the PC NOW
|
|
|
|
|
The problem with Cryptsy is the bloated and non-transactional code. I was also able (by their mistake) to sell twice some coins, ended up with negative balance and withdraws locked.
It's okay for miners that dump and auto-sell their coins, it's not so good for trading and arbitrage
|
|
|
|
|
Could some please explain me slooooooowly why do people with the same hashrate gets very different payouts?
|
|
|
|
|
How long does it take to sell BTC-e USD for Egopay?
|
|
|
|
i have a card that says "off" that has a higher hash rate than you do.
is your computer by any chance on fire?
It's not the computer. The pool is providing crap |
|
|
|
Not saying it can't happen, but I've never seen a PSU slowing down components. Shutdown, instability, lockups, blue screens, yes... Unless the voltage regulators and control logic inside the Sapphires throttle the devices when they see that the PSU is providing way below 12V. What do the "Sensors" tab of Gpu-z show? Can you post screenshots while the 3 cards are mining? try to undervolt by bios modding with vbe7: http://www.techpowerup.com/forums/threads/vbe7-vbios-editor-for-radeon-hd-7000-series-cards.189089/ |
|
|
|
hello , first of all sorry for this noob-ish question  , was thinking to start making a mining but dont know if its still worth to start mining alt-coins (LTC mostly ) ? I was considering starting atm with 2 or 3 r280x ( around 1600 euro a rig with 3 GPU and good PSU ) and a bit later adding another 1-2 GPU(another 600 eu for 2 gpu ). What do you think ? should i better invest in bitcoin and trade it or start mining ? thank you ! 1600€ with only 3 gpus? You're paying too much. What components do you have in mind? You need a 90€ ~ 120€ motherboard , a 40€ Sempron 190, 40€ for 4 GB RAM, 50€ for a cheap HD or 32GB SSD, and yes 200€ for a good PSU. That's around 450€ for the base system... |
|
|
|
|
The shovel sellers are the ones to profit ...
|
|
|
|
|
Show Posts
