![]() ![]() I’m talking “50fps and memory crash” since I own my 2010 Mac Pro with 27” display. So Mac users, on average you are never going to have the same performance options as your Windows brethren. My point here is: these two factors (revision time for models and power use profile) are unlikely to change any time soon – they are fundamental to Apple’s business model. I’d rather use the lighter laptop, but my concern is traveling with my work, not flying. There will inevitably be an AlienWare laptop that ways 12 lbs, burns through its battery in five minutes, but ships with a bigger mobile GPU for better performance. The new Retina-Book MacBook Pros are nice, new, top of the line laptops, but they are also using the GeForce 650M, a decision to trade off some GPU power for battery life, heat dissipation, etc. Watts: how much GPU power you get is a function of the power budget of the card, and both the iMac and laptops are constrained relative to desktop machines.For desktops the big issue is one of cost: you can get the latest mobo at any time for Windows and a game machine is significantly less than a Mac Pro. So the Mac Pro is really behind due to being age constrained if they update it with a current-gen desktop GPU and an Ivy-Bridge based Xeon CPU it won’t be cheap, but it will be competitive. The older a model gets, the farther behind the curve it is.One last thought on Macs falling behind Windows gaming machines: while this used to be a function of technology it’s really become a race with only two factors: watts and time. ![]() So while you may be hitting address space limits and crashing on your Mac right now, you may not have that much hardware budget left over, and it may be a short trip from 64-bits to finding you’ve simply maxed out your hardware. There is no Mac equivalent right now to an Ivy Bridge i5 or i7 with a GeForce 680. In other words, my Mac may be older and slower, but the very fastest ones aren’t that fast. You either have a laptop (highly constrained by the need to be power-efficient) or an iMac (power constraints and no update for over a year) or a Mac Pro (with the best graphics card two generations old and no real CPU update in a while). On 64-bit Windows OSes, X-Plane has significantly more address space headroom, so you have to push the sim a lot farther to run out of memory.
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