A method and system for testing a semiconductor device and storing device test results in nonvolatile memory elements on the tested device, in which the semiconductor device includes logic circuitry which allows test results to be determined on the device. Thermally conductive optically transmissive material may be used for cooling, optionally including fins. A system for performing the abovementioned method is also provided. To make the system more efficient andor to improve image quality, at least one of the graphical acceleration units includes a plurality of graphical pipelines for rendering the graphical data to be displayed by the display device that is interfaced with the one graphical acceleration unit. Contralateral flow is augmented to improve perfusion to an ischemic region distal to the carotid stenosis.