|
Have two 7970s in a Win7 x64 rig with Catalyst 13.1. Using BFGMiner with -I 9 --gpu-engine 1075 --gpu-memclock 1200
If I try a higher core engine clock speed, I crash. If I use a lower memory clock speed, I also crash. Voltage is locked, unfortunately, by the manufacturer (XFX) and so I cannot under or over-volt my cards.
With above settings, getting avg 620 MHash/sec.
|
|
|
|
Well if you don't care about price, then buy this: http://www.asus.com/ROG/ARES26GD5/Dual 7970 GPU with hybrid air/liquid cooling. You can directly funnel the heat out of the case. Wicked expensive. But hey, you said "regardless of price" right?  And since you're persnickity: Acclaimed DIGI+ VRM joins superior quality 20-phase Super Alloy Power for precise digital control, enhanced performance, reliability, and card longevity GPU Tweak: modify clock speeds, voltages, fan performance and more, all via an intuitive interface |
|
|
|
|
Why do real-life arms dealers sell their high-tech weapons, rather than keeping it themselves and invading a poor war-torn country?
The ASIC manufacturers know that as more and more ASICs start mining, the network difficulty will go exponentially upwards. GPU miners will become like CPU miners of old. Soon you will need a 10 Ghash/sec rate just to earn 0.1 BTC/day. So ... they see the future and the writing that is already on the wall. They will make more profit selling the weapons rather than having the headaches of trying to run a poor country for themselves.
|
|
|
|
In turn I purchased 4 x 12inch PCIe risers to raise my cards from my case, then encase them in a wind tunnel box thing I built out of MDF.
Can you give me a name or link or pic of the 12inch risers you are using? I'm looking for some myself, thanks! |
|
|
|
|
So I'm using BFGMiner on a Win7 x64 platform and two 7970 cards. My question is, is it better to use the BFGMiner CLI to change GPU core/memory clock settings and voltages, or is it better to use a dedicated utility such MSI Afterburner?
Seems like BFGMiner is the easiest way to do it. I can't think of a reason why using MSI AB would be any different than BFGMiner when it comes to stability or the degree to which I can undervolt/overclock core/underclock memory.
Thoughts?
|
|
|
|
|
Riiight ... ASIC batch opened Feb 2, at which time you must have owned at least 75 BTC in order to buy it. Either you mined those BTC, or figured out how to buy BTC via exchanges. I hardly think you are "new to the bitcoin world"
|
|
|
|
|
Batch #2 opened Feb 2, at that time USD/BTC was only $20/BTC. One ASIC unit was selling for 75 BTC or $1500. And he's asking for $50,000 USD? LOL
|
|
|
|
|
Suggestion:
On the Status tab, add a counter listing the number of times the miner was restarted?
Thanks!
|
|
|
|
|
I like the "Restart if total current hashrate falls below XXX" feature ... but one problem.
Every now and then, I get a period where no work is being done. GPU usage is 0%, and BFGMiner reports that the GPU hash rate is "WAIT" ... I'm pool mining on Eligius.st, and not sure if my connection to the pool timed out and so the miner can't get new work. Sometimes I'll get a message about "Longpoll requested work update" or that the pool is issuing work on an old block.
Can anyone tell me why this is happening?
At any rate because of this, CGWatcher will restart BFGMiner if I enable the above feature (seems to work well, but it's on a hair trigger). I guess my concern is that CGWatcher pulls the trigger too quickly, and it would be nice to have a user-specified wait period (like Restart if total hashrate falls below XXX for YYYY seconds).
Thanks, and keep up the good work! I'm going to test CGWatcher a little more, and if I keep it, I will definitely send BTC your way!
|
|
|
|
|
Awesome, going to try it with BFGMiner!
|
|
|
|
|
A couple of thoughts:
1) which catalyst drivers are you using (I'm using latest)
2) do you have your monitor connected to just one card? if so, try shutting down, adding the cross-fire bridge, rebooting, and re-running your mining software ... see if that changes things
|
|
|
|
|
I have a similar setup with two 7970s in one rig (without crossfire bridge connecting them). Running Win7 x64 and BFGMiner with just the -I 9 flag, and am getting about 650 Mh/s per card with core clocks set to 1075 MHz.
|
|
|
|
|
Seems to me like bitcoin mining is basically an arms race. Those with the biggest baddest weapons (greatest Mhash/sec, like how GPUs surpassed CPUs) will profit until the next guy comes along with a bigger gun (ASICs).
I just started getting into bitcoin mining, and I suspect if I invest in GPU hardware now, it will not be able to compete with ASICs once they are out in full force because:
1. price of hardware/Mhash rate is in favor of ASICs
2. Mhash/watt is in favor of ASICs
3. difficulty will increase once ASIcs come out
4. Bitcoin rewards for blocks will decrease in the near future
As such, GPUs will become obsolete. The market will become flooded with users selling their GPUs, and cards like the 6990 or 7970 will become dirt cheap on eBay.
Maybe I should just give up now and stop investing in my GPU mining rig?
|
|
|
|
|
Show Posts
