The 2560p also has Sandy Bridge. I believe that's the model shown.
My wife and I both use OSX, Clover 2560ps. I wouldn't claim they're "fully functional" - The video on them is not the best. Lots of bugs in iMovie and sometimes when running 1080p video you get vertical lines on screen, and not contained to the video itself.
Perhaps the guy running this site has solved that issue, but AFAIK I have the best running methods I could find from various Hackintosh communities and guides for the model I use.
"arbitrage scheme in an exchange, where the quotes might vary over time" - The nature of arbitrage is that the profit opportunity is available at a single moment.
What I interpret your explanation as is more akin to trading - Buying backs at a time and waiting for odds to fluctuate at an exchange for a sale.
Although there is no (simple) way of doing a pure arb between a bookie/exchange, all the popular exchanges expose existing liquidity in a market and you can quite safely reduce the risk by double checking available liquidity at the exchange in the seconds before placing your back bet.
It is free, unbiased (lots of the specifically tailored sites like PA mentioned above have affiliate deals which reduce the amount you can earn) and active.
Discussion on the MSE forum is restricted to what they define strictly as "risk free", not "EV+" opportunities, but that's a healthy start.
Their definition of risk free is making a guaranteed profit regardless of the outcome - Either natural arbitrage or an offer-dependent forced arbitrage.
It's a combination of both. Initial signups is not sustainable, for sure, but there are some regular offers from a lot of bookies that are exploitable not for guaranteed profit, but "EV+" opportunities. This is where my consistent side income comes from.
* Also UK focused - Matched Betting. Exploiting Bookmakers signup/recurring offers for a guaranteed profit. This is good for an early surge of ~£2k followed by a pretty easily achievable £200-£500 per month for <5 hours commitment per week.
One of the things these intensives provide that is absolutely killer for a student is the amount of effort and support put into getting you placed after. They really have to fight the doubters in the quality of the course - Getting great numbers of grads in employment immediately after the course is probably a key target for them.
You will get more help getting a job as a grad of these courses than I certainly did on my 4 year degree.
As stated by others, GA's focus is 12-week intensive full time "career-changer" courses. The company I work for recently took in 4 graduates from Makers Academy (similar to GA WDI) and after a 3 month trial we've decided to keep 3 of them on as Junior Full Stack devs.
I'm incredibly impressed at the standard that comes out of Makers Academy in particular, and think they are trained to be better suited for work than a 3 year Comp-Psi bachelors in the most part.
To some it may look and feel like a Mac.