Quote from: Cablez on August 12, 2013, 05:49:02 PM

@Trillium you do know that there is a primecoin gpu miner coming out soon right?

That might or might not pan out like you think it will. There are some fundamental mathematical reasons why GPU mining is difficult for primes. I expect that eventually mtrlt will succeed but the performance gains will not be as extreme as when SHA-256 (bitcoin) was going from CPU to GPU.

As long as the GPU miner doesn't come out publicly within 7 days I should break even on what I paid for these (but probably not recover the cost of my time spent on them lol). Also, I have all the old cases and parts, I could sell these as 'faulty / for parts' without PSUs on eBay for more than I paid. That being said, racing out and buying a rack full of new servers would be a bad idea, if you can't use them for anything else.

Quote from: networkgeek24 on August 12, 2013, 05:41:10 PM

What are you planning to mine with the old Dells? We throw 15-20 of these away every month.

Profitable mining always depends on a balance of performance, efficiency, and initial expenditure. These old Dells have the last two which makes up for the first (performance). Core2Duo CPU's are the lowest I would consider using for mining now.