So, you've got a 2011 MacBook Air, and you say its SSD's read / write speeds are letting you down? Well,Other World Computing would be happy to quell your woes with its SandForce-equipped Mercury Aura Pro Express 6G. The company's latest storage upgrade steps things up from its 3Gb/s versions, promising to get your tasks zooming with consistent speeds of "over 500MB/s" (achieved by utilizing the '11 Air's SATA Revision 3.0, 6Gb/s bus). The 120GB variant will set you back a wallet-thinning $350, while 240GBs will cost you a whopping 600 bones -- hey, no one ever said performance like this comes cheap. They're available now from OWC, and you'll find full details in the PR past the break.