Bitcoin Forum

Bitcoin => Hardware => Topic started by: byronbb on June 15, 2013, 08:18:06 AM



Title: Asic USB Miner MH/s poll
Post by: byronbb on June 15, 2013, 08:18:06 AM
reserved


Title: Re: Asic USB Miner MH/s poll
Post by: natbyte on June 15, 2013, 08:47:37 AM
333 to 336 however these DO need active cooling to keep hardware errors down.


Title: Re: Asic USB Miner MH/s poll
Post by: ct1aic on June 15, 2013, 09:10:14 AM
Greetings.

I'm getting for my 2 USB Gizmos, 336.4 to 336.8 MHash/s, also with active cooling, 1% Hardware Errors.

The ASIC chip needs a heatsink and the best I saw (and going to buy from Taiwan in a few days) is the smaller of a 3 heatsink kit to the Raspberry Pi, intended for the voltage regulator of the RPI: http://www.ebay.co.uk/itm/171047859890?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 (http://www.ebay.co.uk/itm/171047859890?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649)

If anyone knows a better one, please post here.


Title: Re: Asic USB Miner MH/s poll
Post by: abbeytim on June 15, 2013, 09:21:28 AM
I believe the heatsink that's on it is glued to it so be careful you don't wreck the chip removing the old one


Title: Re: Asic USB Miner MH/s poll
Post by: Coiner.de on June 15, 2013, 10:53:52 AM
I believe the heatsink that's on it is glued to it so be careful you don't wreck the chip removing the old one

If you are talking about the USB block eruptor, the heatsink is on the backside and it falls off when unscrewed.

http://img844.imageshack.us/img844/2658/usbjq.jpg

The thermal pad is not sticky.


Title: Re: Asic USB Miner MH/s poll
Post by: HTML5 Gordon on June 15, 2013, 02:36:13 PM
With a fan on mine, they are averaging ~354MH/s each.  It does fluctuate quite a bit, but that is the average.


Title: Re: Asic USB Miner MH/s poll
Post by: monstrs on June 15, 2013, 02:43:20 PM
With a fan on mine, they are averaging ~354MH/s each.  It does fluctuate quite a bit, but that is the average.

How are you getting 354? Any modifications?
Also is it better to take of that heatsink? I Have two of them and for now they are with heatsink on with 120mm fan blowing on them, all i can say that they dont get so hot like without fan, exact temps cant tell, but without fan it was 66 C, now its a lot cooler, but i still get ~ 1.9% HW.


Title: Re: Asic USB Miner MH/s poll
Post by: Bitcoinbernd on June 15, 2013, 03:10:40 PM
I dont think active cooling is neccessary. I got three Erupters and I found out that a passive chipset-cooler attached to the initial cooler along with this thermal-pad (http://www.amazon.de/gp/product/B0051C287K/ref=as_li_ss_tl?ie=UTF8&camp=1638&creative=19454&creativeASIN=B0051C287K&linkCode=as2&tag=blovonpetpik-21) does a great job. Got a picture from my setup here:

http://www.piksa.info/blog/wp-content/uploads/2013/06/RPiMinepeon2von2.jpg

Soon each Erupter will get bis own chipset cooler.


Title: Re: Asic USB Miner MH/s poll
Post by: ct1aic on June 15, 2013, 03:18:24 PM
I believe the heatsink that's on it is glued to it so be careful you don't wreck the chip removing the old one

The idea is to keep the original gracious heatsink with the BTC logo at the bottom side and glue the aluminium heatsink directly on the ASIC "BE100" chip with the included 3M Self Adhesive Thermal Layer, at the upper side.


Title: Re: Asic USB Miner MH/s poll
Post by: nubbins on June 15, 2013, 03:30:17 PM
With a fan on mine, they are averaging ~354MH/s each.  It does fluctuate quite a bit, but that is the average.

My BTCGuild estimated speed is 1,760.94 MH/s for 5 units, which works out to ~352MH/s each. I've also got a fan on mine.