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Bitcoin mining two GPUs

: Bitcoin mining - Moving from GPUs to ASCIs  September 29, 2013 – 00:00

Amazing mining rigs belong
in crappy cases.
Application-specific integrated circuit,that's what ASCI stands for. I always have a hard time remembering,not only what it stands for but what order the letters go in (for some reason I always type ACSI). Bottom line is that it really doesn't matter when it comes to bitcoin mining (also,is Bitcoin supped to be capitalized--maybe we need a consortium to answer these questions).Recently I retired my two AMD Radeon HD 5830's because the difficulty has skyrocketed so high it's not worth the electricity to run them. I thought about switching them to litecoin,but wasn't happy with the way it worked. I've been easy on these cards. They always had a small overclock (10%),and I kept the intensity down to keep temperatures low. I decided longevity is better than higher speed,and they did a good job for a couple of years. Most recently I sold them on ebay for about half what I paid. Financially speaking these two video cards are the highest return on investment than anything I've ever done with money.

I mine on btcguild (who doesn't these days?),and when they started offering ASCI block erupters for bitcoins I jumped on it. Each one of these things mines faster than the a 5830,and they use less electricity--far less. The fact I could buy them with bitcoins made the deal great.

The only downside was I had to spend real money USB hubs (block erupters are USB devices),and without much thought I picked up a Satechi 12 port hub. To Satechi's credit,they have a great customer service department. Unfortunately this product was not so great. I fully expected the 2 amp DC converter not to power 10 block erupters and a fan,but this hub limits the power... not the converter. When I wired up my own 50 amp power converter I was still limited to the number of erupters that would run. Really who buys a 12 port USB hub to run 12 low power devices? Lesson learned: there is a lot of great information in Amazon comments. Had I read them I would have purchased a hub that works the first time around. After leaving a 1 star product review,Satachi refunded the full cost including shipping of my order. That was even after I informed them I cut the power cable to make use of the DC jack with my other power converter. Not many companies I know would go to such lengths,so props to them.

Source: blog.geekwagon.net

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