Hide?

Any recommended tor-based mixing services?

 

I actually wonder why Ukrainians have not invested some coins into some emerging assassination markets to get rid of, ummm... some guy who likes practicing judo?

The most wanted person on the current market is Bernanke.... The second one is Obama... Something's wrong here. Some people call themselves anarchists?

Russian army has knocked out the cell service in some parts of Crimea when they invaded it, BTW.

Good thing about cryptocurrency - you can't see it so can't easily steal it at a gunpoint. Bad thing - you can steal it with a click of a mouse.

There's something else we are overlooking.

I deleted cgminer bin files (to start over) and the hashrates on both cards went down (to 500-ish). I had to play with my bat files settings to bring the rates back up - couldn't bring them to the same levels even by restoring the bin files and restoring the previous hardware configuration. It used to be 730/620 now it's 665/625 and my bat file is completely different now after a lot of work.

With the risers the temps are in the 70s.

Go figure...

Hmmm... Bottom line - in my case powered risers and an extra power supply made no significant difference other than lowering the temperature of the card that's outside the case  (16 degrees cooler, tested on one motherboard so far) .

Powertune affects my hashrate a tiny little bit, but i'd rather undervolt (mine is -20, I'll test power consumption when I get a chance). I'll play with it some more, now that I have all this stuff, but so far no positive outcome.

What are you currently getting from the cards that you have?

I kind of think it depends on the motherboard and a lot of other details.

I'll get my risers tomorrow so I'll try to comment.

OK, I'm waiting for both the risers and the molex connectors. I was glad  I could pay in BTC.

Meanwhile to pass the time I plugged one 8 pin cable from another psu to one of the underperforming cards  (the psu only had one) and the hash rate jumped by 20. So it is a power issue - but it's not exactly an underpowered psu - more like what you said - the mb not delivering the power.

I've read this post (#19) that made sense (not enough power for vc ram), plus  the main psu is probably not delivering enough either through those 8 pin connectors.

https://bitcointalk.org/index.php?topic=268879.msg2974007#msg2974007

My current understanding is kind of like the link posted by roslinpl

https://bitcointalk.org/index.php?topic=268879.msg2974007#msg2974007

Meaning some motherboards do not supply enough power to the cards' ram. However some other motherboards (especially if designed for mining) actually do supply enough power and powered risers can be even detrimental to the results.

Powered risers do not work for these guys for instance, they are using a mining mb:

http://www.youtube.com/watch?v=WfqfEpanpig

In real life just see what gives you better hash rates.

I would say a powered riser, a 280x, 290x or similar card and another power supply. And maybe transfer the components to an open air setup if you don't want the awkwardness of cards on risers outside the case. That's my plan anyway.

Interesting to hear how it works out for you.

I have watched this video where they put together a 6x 280x rig with some insane hash rates. They  use non-powered risers but each card adds significantly to the draw from the motherboard, i think around 50W actually (that board was designed for mining though). They end up using 3 power supplies.

http://www.youtube.com/watch?v=WfqfEpanpig&feature=youtu.be

So i might give powered risers a try. Anybody can recommend good suppliers in the US? I looked on newegg but what they sell gets bad ratings...

I have some decent old 650w power supplies around, without pci-e 8-pin connectors. I wonder if something like this would work, to add to the 1000 that i already have:
http://www.newegg.com/Product/Product.aspx?Item=9SIA29716C8626

Mine are in cases but the cases sides are open and they have tons of fans - those are aluminum lian-li cases. In the smaller case they are 83/82, fans at 90/92%, larger case 74/80 fans 77/80%.

A single card runs around 60 to 70 something with fans at 50-70...

I don't understand why hash rates drop so much though... They are 620/730 and 630/720... The cards are very similar and i tried switching them around with no results... Let me know if powered risers make a difference.

I have a similar problem with dual HIS 280x (i have a total of 4 actually). On two different boards with two different power supplies ( a Thermaltake 750 and a Corsaire 1000). A single card runs at 730 and cool, dual cards drop to 600/500 or 730/630 with some extensive cgminer tweaking and very hot. I don't know if it's a PSU issue, doesn't look like it in my case.

I bought a couple of HIS 280x to check out how it goes. I have 2 win7 boxes, one is 1.5 year old, one is 4.

With some struggle (had to buy new power supplies and a new case) I made the cards work on both of them at 730 khs. So i figured I'll add 2 more because i had 3 more open slots.

The older board does not recognize more than one card (updated bios and all of that) which is OK with me, even though it runs the card cooler and with no display artifacts.

The newer board (gigabyte z77x-ud5h, cpu i7-3770, 8 gigs ram) can run 3 cards at the same time without risers but the hashrates drop from 730 to 500 if I add more than 1 card. And I've been playing with cgminer settings quite a bit - no help. The power supply is a new Corsair RM1000, so it should be OK from this perspective.

I kind of think it's gotta be an issue with older motherboards but maybe I'm wrong. I was thinking of trying Linux (i've had a quad-boot system before)  but I'm a bit short on time, considering I'm not even sure it would make a difference. The other rout would be buying a new motherboard (and maybe RAM and processor as well in which case it kind of becomes a mission creep...). Three of my cards are identical (850 core) one runs hotter and slower, kind of opposite of what's expected (1000 core)...

Thanks in advance for any ideas.

prolom.

I ran a card overnight at dogepool and it only made 300 coins at almost 700 kh. So I stopped the experiment, granted it probably needs more time. Coinwarz thinks I should be getting over 13K a day with 1400 kh and I'm getting more than that at hashfaster, today at least, with one of the two cards mining at another pool for several hours. So for now I'm a happy camper. If it ain't broke don't fix it.

I'm not an expert on this, just sharing my experience. I have 2 different models of HIS 280x and one hashes at 730 and runs cooler, the other is at 620-ish and lower and runs hotter. Funny thing is the slower card is a higher end model I believe (1000 core clock vs 850)...  I tried them both on 2 different Windows 7 boxes, one with an old MB, one with newer. I ordered 2 more of the faster ones.... Weird because the cards are damn near identical.

The faster one - fan runs at 56%:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1p
C:\...\cgminer.exe --scrypt  -o stratum+tcp:*** -I 13 --thread-concurrency 11200 -g 2 -w 256 -I 13 --gpu-engine 1050 --gpu-memclock 1500 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

the slower one - if I run it at the same settings as the other card the fan goes to 100% and it gets overheated anyway (although it does clear the 720 when it's not throttled down for overheating), under the following settings the fan is 61% :
setx GPU_MAX_ALLOC_PERCENT 90
setx GPU_USE_SYNC_OBJECTS 1p
blah blah... -I 13 --thread-concurrency 8192 -g 2 -w 256 -I 13 --gpu-engine 1000 --gpu-memclock 1500 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

I set one 280x card to your pool, ocminer. To see how it compares with hashfaster, which has been ok so far.

I'm using Cryptsy and Coinex. Both seem to tolerate deposits from pools even though they warn against it.

I'll look into the block stats later on - my current pool's front end is down at the moment.

Maybe somebody else goes first... I might give it a try when I get a couple more cards this week.

Aight. Giving dogepool a try overnight. See what gives.

edit - no... it estimates like 2,300 doges a day for 1.4 MHs... The hashfaster  was over 12,000 payout over the last 24 hours. Huh? I'm just looking at the numbers, I have nothing against either one...

Does anyone have anything against doge.hashfaster.com?

Doge doesn't look like their main business...

I recently started mining on Windows 7 with a couple of different HIS R9 280X (one 850, one 1000) and there were so many hardware problems I don't know where to start. I wanted to just install them into my existing systems. They hash at different rates on different motherboards, have widely different temperatures, cause system freezes and really bad display artifacts... I've never had that many problems with graphic cards in my life.

Where is the best place to look for solutions?

My current board is a gigabyte z77x-ud5h, i7-3770. The cards run hotter and slower than on my older gigabyte board, but that one will not recognize 2 cards at the same time, even with the newest bios.... I really don't know where to look at this point. I'm planning on replacing one card (the 850 works cooler ans faster)  to make things simpler...

I'm open to the idea to get a new motherboard but I don't want to get the whole mb/ram/cpu etc setup...

Thanks.