ah, I get it now. the times Ive had to redo nvidia cards with thermal pads they were still sticky enough (apparently the stock pads on the the nvidia folding cards Ive done this to may be different) to keep and just reuse.

you may want to monitor your gpu fan speed as well as the gpu temp. over 75% fan speed with prolonged use may shorted the life of the fan.

cgminer is good as you can set a max fan speed and it will underclock the gpu (if needed) to keep the fan speed at (or under) a target speed. it treats your gpu well.

Hi Slush

1st, good job on the NMC merged mining thing.

I am trying to figure this out though.

been mining with maybe 800 MH/s average, and put in my NMC addy on 11 Nov. NMC wallet says ~120 NMC payed out a few hours ago. thats the lump sum when you hit the big red button.

the statistics page says I made about 80 NMC (rough guess just eyeballing the figures) from 14 Nov till the payout. thats about 20 per day or so.. seems about right as in the last 4 hours or so since the payout (which left my NMC  confirmed figure at zero) confirmed  now says ~8 NMC.. thats about ~24 per day. so thats means about 40 NMC from the beginning of merged mining till the 14th? about 2 days worth? or am I just reading this wrong.. middle of the night here.

had a fan get noisy on an asus direct cu 6870 (1000/300) I bought in june 2011 running the fan at 85-90 % (this before using cgminer with its auto clocking and auto fan features) . oiled it and its fine now but Im not impressed. couldnt return it as I had already replaced the TIM with AC MX-2

been doing folding for years on various overclocked but well cooled cards. never killed a card but Ive killed some fans over the years. keep em under 75% if ya can.

+1. cgminer could automatically lower the core clocks too if heat becomes an issue.

I would also check the PSUs in the rigs, OEM stuff from staples may or may not be up to the task of powering 5850s 24/7. the 5850 needs 2 x 6 pin PEG connectors. if the PSU lacks them they may come with the cards, or at least one should.

be prepared for some noise though heh.

slush, no worries here.

thanks for the time you put into this whole thing... the namecoin work, and especially the time and effort during the ddos thing.

it happens when it happens.

pointed a miner at that just now. no joy. all three of my rigs now point to a different one of slushs addys with no connection

cgminer is configured with 4 pools (slush primary, others as failovers) and is mining elsewhere at the moment but slush is my favorite. sigh. ah well at least cgminer will keep trying slush.

sooner or later these ddos idiots will tire and we can all relax again.

so where should I point my miners?

cant connect with: api3.bitcoin.cz:8332, api.bitcoin.cz:8331, or api.bitcoin.cz:8332

all fail to connect, and cgminer keeps trying them as its the primary pool with no luck.

I may be on another IP than before the attack; Im on 3G wireless internet (USB modem). it changes IPs every 24 hours I believe. could that be the problem?

Ive restarted the miners many times in the last few hours to no avail.

I cant get to your website either.

just have your miners setup with multiple backup pools configured as failovers. sooner or later your miners will automatically switch over to a pool thats running.

cool!

and thanks for costing me an hours sleep. thats what I get for logging in in the middle of the night, seeing this post, and then installing namecoind (without having a clue as to what I was doing mind you, never paid attention to namecoin till now) on my ubuntu box.

heh.

yup. plus pc power and cooling and most antecs. of course seasonic makes the guts of most of those units anyway heh.

what PSU on each?

1350 watts from a  single 120 outlet is a heavy load (assuming 120v USA 15 amp circuit) you may have voltage drop which pushes the PSU a bit harder (ie it generates slightly more heat).

needless to say a burning electronic smell is bad.

ahh gotcha. wasnt sure if you had some misconception as to what a mining rig needed for storage.

me, Im a SSD for OS/productivity, medium speed spinner for games, huge capacity slow spinner for media  kinda guy. that would be sweet for a games drive.

nice find.

Ill leave em all parked at :8331 then. running cgminer with failover to another pool if something happens so no worries here.

Ive wondered where to get replacement GPU fans too, but the couple times Ive killed them I just go with straight aftermarket cooling. your way is way cheaper though. gotta remember that link.

but one question.. why the thermal glue? why not standard thermal paste. I use artic cooling MX2 with better than stock results. done like 6 GPU cards with it so far.

?

that drive is the exact opposite of the drive a miner would want.. if he even wanted a hard drive at all.

cheap low power green drives or USB flash drives. those are the drives for miners.

when will the :8331 backend be shutdown? should I switch all mine back to :8332 in the next couple days?

about $230.

$130 for a 5830, and about $100 extra on the 2 cards that I was replacing anyway but I would of bought lesser versions of. IE got 6770 instead of a 6670 for the HTPC (replacing a 3850), and a 6870 instead of a 6850 (replacing a 4850) for the daily use rig.

helps that I was already set up pretty good for just dropping in cards: PC Power and Cooling and Antec PSUs, decent cases with good cooling etc. just add cards, software and go.

as a long time folding@home addict (we run 100% GPU load 24/7 too), I can assure you prolonged running at 100% fan is NOT good for your card. some odd non ref coolers are OK with it (ones with multiple lower speed 92's say) but with the bulk of the cards out there its a good way to kill the fan in 6 months or so. it may still turn at reduced RPM (and/or increased noise) but the bearings will be pretty much be shot.

60-70% is probably the best compromise speed for cooling vs long life. I have gotten 3+ years of 24/7 use from 5 or 6 video cards at 65-70% fan.

make me laugh too.

but Im more interested in this:


exactly what type are those?  how are they hooked up? and two of them? one is not enough?

I have thought of having a whole house gas discharge surge protector installed at the breaker box. cheaper than replacing separate MOV based strips as they age and become less effective.