Hi, it seems the new Little Single (30Ghash) is better then the old SC Single 60Ghash, here's why:
1. Better value for money: 1 x 60Ghs Single = $1299, 2 x 30Ghs Singles ($649*2=$1298)
2. Better redundancy: If 1 x 60Ghs Single fails then you are down by 60Ghs, if one of the two 30Ghs Singles fails, then you are down by only 30Ghs
3. Even more redundancy: with 2 x Little SC Singles you get 2 power bricks.
I am personally disappointed that BFL now allows to upgrade the Japaleno orders to Little Singles, but does not allow the Standard Single to be changed into Little Singles orders.
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Edited the numbers value mistake
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You are so full of fail.
1) 2 Little Singles vs 1 SC Single is the difference of
$1! One freaking dollar over a 1.3K USD investment? Who cares?
2) More parts =/= more redundancy. It just means more points of failure.
3) Same thing. If BFL has a 2% failure rates for their PSUs (I just made that number up), then you're twice as likely to get one that fails.
And as someone else said, you're also now looking at added costs of USB hubs, and space constraints.
Don't forget the added shipping cost. Additionally, the weakest is going to your usb hub. assume you're looking at 10 littles vs 5 singles. If your hub dies - maybe you have 6 usb on the motherboard. half your hash down until you've replaced that hub. If you keep replacements on hand, then you've driven the initial cost up. If you don't, then you're better off with the singles, because at least you probably plug all 5 into the mb and still have a port for a keyboard to launch your mining software.