Patent ID: 7702479

Claim:
A method comprising: emulating a guard-band chamber environment within a single computer by, according to a set of test parameters, creating an emulated guard-band chamber, wherein the emulated guard-band chamber is emulated entirely within the single computer by performing the steps of: adjusting voltage outputs of a plurality of Voltage Regulator Modules (VRMs) in the single computer, wherein the voltage outputs of the plurality of VRMs are adjusted to pre-determined non-sequential voltage levels that are within a pre-determined voltage range, and wherein the pre-determined non-sequential voltage levels fluctuate such that each successive voltage level is alternately lower or higher than a previous test voltage level according to a pre-determined voltage test pattern; and adjusting a temperature of the single computer by selectively adjusting a speed of a fan attached to the single computer; and testing the single computer under conditions created by the emulated guard-band chamber.