Reviewers note, alongside their fawning assessment of the world's best performance, that the HD 6990 is a massively power-hungry card (375W TDP) and one that makes quite a bit of noise while going through its herculean tasks.

ENGADGET: AMD launches Radeon HD 6990 powerhouse for $699, maintains 'world's fastest' title

The Intel Atom processor S1200 product family is the first low-power SoC with server-class features offering as low as 6 watts1 of TDP.

ENGADGET: Intel's Atom S1200 lays claim to title of world's first 6-watt server-class processor