Rasberry pi= i see videos and pictures of people buying these things that cost around 60 bucks and they just run 4 block erupters on them... just use a usb hub you guys have computers right? waste of money unless your running a big rig of usb asics
Buying overpriced usb block erupters= ive been seeing this on the web alot stores like bitcoinrigs.org or ebay selling block erupters for 35$, 50$ even 65$ each! and people are buying them! Go on amazon they sell block erupters brand new sealed for 18-20 a piece and btcguild sells them for .18 btc and when you buy them you get coupons for them .03 btc off...
GPU= Gpu mining is basically outdated now pretty much. along with the high prices of a gpu that cost 500$ and runs at 300 mh/s
please stop wasting your money, money is valuable i cry everytime i see these things whishing i had that much money to spendBTC
Here is my perspective:
As for the raspberry pi, well it uses a lot less electricity compared to my gaming laptop. Heck, just the power supply for my laptop is as big as 6 raspberry pi's.
As for the block eruptors, well people are willing to pay what they pay because of the value they perceive. Remember, this value doesn't have to be counted just in terms of money returned from mining. For some, perhaps it is the ease with which a vendor/reseller makes the process that justifies the added expense. For others, they might do it to support their favorite pool. At this stage, I think the majority of the people buying ASIC Miner block eruptors are doing so either for fun or educational purposes. When it comes to fun and learning, most of us have a hard time not wasting money when we have it.
As for the GPUs, I keep mine for two reasons. The first is to support alt coins in the hope that they will be a source of future innovation in the cryptocurrency space. The second, is just in case bitcoin ever did have to move away from sha256 on to something like scrypt. I'd want to be ready.