yeah, that's pretty normal

what intensity are you running at ?

turn it down a bit and it'll be much better but you'll lose some hash


at intensity 13 I get 700hash/core and slow/artifacts (if i run both cores like that)

at intensity 12 I get 400hash/card but can;t even tell it's running


but... at 190hash, you'll be tight for cost of power used to cash from coins
(depending on your card of course)


EDIT: actually, it's not that bad, 250watts 24/7 is under £1/day

on intensity 18.
Am I right in having this as my username:
14eCRRRLi7TgAf5bVDTtY9surWms7of9aq

its a HD7770 so pretty lame, I have a solar setup so during the day it'll cost me nothing even this time of year about 800-1200w its makes on a cloudy day.


this is quite interesting, whats regarded as the best value gpu for doing this?

Setting mining up for perfection is very hard, it took me days to get it exactly right. It appears that what settings work for one person don't work for someone else. In my case I found the same settings for identical GFX cards in the same PC gave me different results. Also, clocking too high can reduce performance, so you may find that you need to underclock to get best performance.

I'm using CGMiner 3.7.2 with these settings :-

-Q 2 -I 13 -g 2 -w 256 --thread-concurrency 8193 --lookup-gap 2
I'm also using a tweaked version of the scrypt130511.cl file which gives me about an extra 20k on both GPUs. If someone wants to try my tweaked code you may, but you will find that your optimal clock speeds may be different.

Running dual XFX R280X Black Editions that have default clocks of 1080/1550. I've downclocked one to 1052/1500 and the other at 1072/1500. Any higher on the GPU clocks and performance drops. 1MHz either way on mem clocks and performance falls through the wall. There really does seem to be a "perfect" setting for each and every setup out there. I've also reduced the GPU voltage on both cards to 1125mv and 1131mv, this has reduced the power draw to about 220w each rather than 250w each. Running temps are also much lower, both cards barely hit 70C which means the fans on auto are at about 2500rpm making it quiet enough to sleep in the same room.

This gives me 740k and 750k on my two cards, with absolutely no slow down or lag when using my PC.

I have experienced this lag before though when I was using my 6950 unlocked to 6970. The best settings for that were :-
-I 18 -g 1with the high intensity comes high lag. Fortunately for my new setup, intensity of 13 is the best option, any higher and performance drops and hardware errors creep in.

Want: http://www.amazon.co.uk/gp/product/B00HDP6TPA/

I have 0.00172492 BTC apparently, whatever that means 

98p :-)

Quote from: addictweb on February 03, 2014, 12:53:46 PM

Want: http://www.amazon.co.uk/gp/product/B00HDP6TPA/

Better one here for cheaper - http://www.scan.co.uk/products/asrock-h81-pro-btc-intel-h81-s-1150-ddr3-sata-iii-6gb-ssata-raid-pcie-20-(x16)-d-sub-(vga)-hdmi-atx

Who also accept bitcoin http://www.scan.co.uk/info/bitcoin

cheap, with lots of PCI-E slots (x1 speed ports are good enough) and and bare minimum of everything else (to keep it cheap)

For those of you still interested in mining. Here are my top tips.

1. Download a BlackCoin wallet - http://www.blackcoin.co/
2. Install it.
3. Join the BlackCoin Multipool - http://blackcoinpool.com/
4. Start mining.
5. Receive daily BlackCoin payouts.
6. Keep it in your wallet and earn interest.
7. Watch the price rise and rise over the coming days, weeks, months. Check it out on www.mintpal.co.uk

In year, I have no idea where it'll be, but I'm 100% positive it'll be worth it.

Goodluck.