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i just turned on a ventilator, in the high summer, middle august. so since april i think. like there is some airflow, the air temperature now is around 14 degrees, but no fan and no reported error (actually less than 1% or something like that) on bfgminer and i never had a problem.. ROI is hard to calculate, specially if you think on the price when it came into the market, but for sure they are headache zero and silent. I prefer a 10GHs from erupter than the asic blaster (I have one, and I always think that it will burn my house down, that sometimes I have to reboot, etc)
Im running almost 40 without fan.. they are costing 0.17 BTC/each, are easy to change if one get burned and i don't want to keep it 10 years up and running.. I prefer to save watts, hub port and to keep everything in silence.. They are hot, but I don't touch them with my tong... so who cares
I hope ours will last long enough to get ROI.
Rough estimations indicates around 3 months to roi according to the currency you're mining.
How long have you been running erupters without fan ?
Im running almost 40 without fan.. they are costing 0.17 BTC/each, are easy to change if one get burned and i don't want to keep it 10 years up and running.. I prefer to save watts, hub port and to keep everything in silence.. They are hot, but I don't touch them with my tong... so who cares
there's also an "ARCTIC COOLING BREEZE Pro" 92mm, with variable speed and 4 usb ports. It's usb-powered though, so those 4 ports will probably only accept low-power devices, and no block erupter.
It can be found at 12 EUR per unit in public and online stores here.
I'll probably look into this one, cause i'm actually using a way too big fan to cool my 5 block erupters, wasting energy.
(i for sure won't go fanless with block erupters, they really gets way too hot in a few minutes, if no fan is used).
It can be found at 12 EUR per unit in public and online stores here.
I'll probably look into this one, cause i'm actually using a way too big fan to cool my 5 block erupters, wasting energy.
(i for sure won't go fanless with block erupters, they really gets way too hot in a few minutes, if no fan is used).
Those look pretty
there's also an "ARCTIC COOLING BREEZE Pro" 92mm, with variable speed and 4 usb ports. It's usb-powered though, so those 4 ports will probably only accept low-power devices, and no block erupter.
It can be found at 12 EUR per unit in public and online stores here.
I'll probably look into this one, cause i'm actually using a way too big fan to cool my 5 block erupters, wasting energy.
(i for sure won't go fanless with block erupters, they really gets way too hot in a few minutes, if no fan is used).
It can be found at 12 EUR per unit in public and online stores here.
I'll probably look into this one, cause i'm actually using a way too big fan to cool my 5 block erupters, wasting energy.
(i for sure won't go fanless with block erupters, they really gets way too hot in a few minutes, if no fan is used).
Got this fan and it works great. http://www.frys.com/product/5442979?site=sr:SEARCH:MAIN_RSLT_PG
Nice tip, I ordered one from amazon... so simple; a USB fan with variable speed, wonder why this is so rare!
Perfect for the BE and BF1, thx!
According to the Arrhenius equation, the increase in failure rate is related exponentially to the increase in temperature
http://www.itl.nist.gov/div898/handbook/apr/section1/apr151.htm
so cooling your BE or any other electronic devices is expected to improve their reliability.
Stay cool
http://www.itl.nist.gov/div898/handbook/apr/section1/apr151.htm
so cooling your BE or any other electronic devices is expected to improve their reliability.
Stay cool
I honestly wouldn't worry about it. A fan is probably going to use more power than 1 USB stick. I wouldn't bother using a fan until you had 10 or more. But if you're just doing this just for a kick and like gadgets, those little white Arctic Breeze (link) fans are irresistible... and cheap.
I have been running mine without since I bought it for 2.6 BTC; chew on that non-ROI, so far it has generated 0.3! 
But I have proper heat sinks (not the flat one shipped) on both sides.
I'm trying to buy one BF1 USB so I can run that passively too.
The circuit board on the BE is discoloring around the BE100 chip, but so far so good (~3 months)
But I have proper heat sinks (not the flat one shipped) on both sides.
I'm trying to buy one BF1 USB so I can run that passively too.
The circuit board on the BE is discoloring around the BE100 chip, but so far so good (~3 months)
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