As part of its Computex keynote today, Intel teased a 28-core, 56-thread high-end desktop CPU in a single-socket system. Incredibly—and I do mean incredibly—the company demonstrated this part with a 5-GHz all-core clock speed while running Cinebench. The company was apparently able to do that without using exotic cryo-coolants, too. The systems on display appeared to be in standard desktop cases using chilled water cooling.
No word on the power supply, cooling apparatus, or wiring upgrades regular folks might need to run one of these systems at similar speeds, but the answer is no doubt "prodigious" in all regards. Intel says these parts are coming in Q4 of this year, so we'll have plenty of time to get ready.