Can you fill out that template with your settings? We can compare if there are other optimizations possible.
There are huge memory holes. My 290x has them around 1500. Go 1 MHz over and it drops the hashrate dramatically. As you go lower near 1250 you should be at 1250. At 1625 (AB Max) it was on the rise again but I believe it had to go to or near to 1750 to hit the optimum values again.
I wonder why the 7970 idle alongside it has such a big effect. How far apart are they? Is the 7970 blocking the airflow? I'm curious about this one if it's similar with my crossfire. I'm getting risers this week so I'll probably put a 4 card configuration with two outside and I'm thinking I'll put one custom card with one reference inside the box, and 1 of each outside of it hanging somehow.
No V control on the 290s, and no 8GB more of memory will not increase hashtate, you only need more memory when running 4 plus GPUs per rig.
Try 1250MHz mems it will lower the heat, try 860/1250.
2.65 kh/w?
I did 1000 kh/s with my two 7950s at 800/1500 with huge undervolts (stock was 1.25/1.188) using 333w total.
That gave me basically 3 kh/w, I thought Hawaii was more efficient?
Reguardless unless your electricity cost is higher you're earning almost basically 70% more coins per day meaning more money 😉
According to GPU-Z, my 290s at 73C use ~218W while mining 870 kH/s.
My 290s at 82C use ~238W while mining 870 kH/s.
I'm not sure that I trust GPU-Z readings, but there does seem to be some validation that keeping them cool is important in being more efficient.
Minus 10% for PSU efficiency, ~562W.. minus ~80W for the rest of the system, ~482W for 2x R290 mining, is very very good Hash/W.
From what I've seen, I have a hunch R290s consume nearly 50W more when mining at high temps. Looks like 4x R290 under water/ghetto loop is the way to go for a mining rig.
2.65 kh/w?
I did 1000 kh/s with my two 7950s at 800/1500 with huge undervolts (stock was 1.25/1.188) using 333w total.
That gave me basically 3 kh/w, I thought Hawaii was more efficient?
Reguardless unless your electricity cost is higher you're earning almost basically 70% more coins per day meaning more money 😉
People on bitcointalk talk about satoshi. What is satoshi?
wow doge is going way up... don't know if I should hold my bag or trade for BTC/LTC..... :hmm:
wow doge is going way up... don't know if I should hold my bag or trade for BTC/LTC..... :hmm:
Hard to say, but I think Doge is going to crash spectacularly at some point. Also with scrypt ASICs coming there's some uncertainty as to how this will affect smaller alts.
Long term I'd rather bet on something like NXT. It's definitely high risk but I can actually see that hitting $1 per coin once proper clients come out, there's a lot of potential in it, huge community also.
Doge is going crazy. They are rumors about it being added to BTC-E soon. Damn.
It will not crash anymore. It has gained so much value in people's mind.
don't try to buy too low, you will just fail, it's moving too fast. Trying to bring the price down by 4 satoshis is just plain wrong at this point if you ask me. I failed many buy orders like that, just to see it rises again and cry.
That's almost half my power consumption. No idea why that would be the case except maybe you just had a barebones setup for mining? I don't have a super power-hungry setup but it's not a barebones mining rig either (6x1000rpm fans, waterpump, 1 HDD, 4xSSD, etc.)
big drop coming may come, many small buy orders aligned. A whale might buy it all at once and back to 100 we go.
The Critical Patch Update will address ... 36 of which apply to vulnerabilities in Java SE, including 34 that are bugs that can be exploited remotely by an attacker without requiring authentication.
http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html