So guys i was thinking about getting myself a usb block erupters and mine, any idea what the hashrate of a single erupter is in comparison with r290 graphics card?
You are looking at the wrong coin to use a block erupter.
http://www.quarkcoins.com/mining-quarkcoin.htmlBy all means, mine quark on your CPU while mining some other sha256 coin on the block erupter.
Yes i mean with multi pool
A single usb block erupter (sapphire) will effectively run a SHA hashrate of ~336mh/s .. why would you want this? You'd barely get .25 if you mined with two of them all day. AntMiner USBs (2Gh/s) are like sub $30 on Amazon right now whereas assholes are trying to still sell Sapphire block eurpters for like $40+ to suckers.
An ATI R9 290 will be very inefficient at hashing SHA coins, comparatively per-watt. However, it will hash scrypt algorithms and additionally other algorithms.
I think usb erupter is less of a hassle for the non technical guys, how fast would they be if used on Scrypt? I believe the Quark multi pool is starting with scrypt any idea which scrypt coin would be the most profitable with a usb erupter?