Nvidia used Computex 2026 to un­veil RTX Spark, an Arm-based Windows plat­form for pre­mium lap­tops and com­pact desk­tops built around a 20-core Grace CPU, a Blackwell GPU with up to 6,144 CUDA cores, and as much as 128GB of uni­fied LPDDR5X mem­ory, fi­nally de­liv­er­ing the long-promised dream of a 14mm lap­top with the en­ergy pro­file of a dis­grun­tled na­tion-state. Nvidia says Spark can reach up to 1 petaflop of FP4 AI per­for­mance, run large mod­els lo­cally, and bring se­ri­ous gam­ing and cre­ator horse­power to sleek ul­tra­porta­bles, pro­vided users are will­ing to wear the com­pa­ny’s op­tional fu­sion re­ac­tor back­pack, a matte-black power unit roughly the size of a carry-on cof­fin that clips neatly be­tween the shoul­der blades and hums and rat­tles just enough to loosen den­tal fill­ings. Demo units on the show floor gen­er­ated code, ren­dered scenes, and sum­ma­rized doc­u­ments in­stantly, while nearby con­ven­tion lights re­port­edly dimmed in re­spect­ful ac­knowl­edg­ment.

The com­pany pitched Spark as a ma­jor step to­ward turn­ing Windows into an “agentic” AI op­er­at­ing sys­tem in part­ner­ship with Microsoft, mean­ing the PC will no longer merely fail to find your printer, but will proac­tively de­cide which five back­ground mod­els de­serve the re­main­ing half of your city block’s elec­tri­cal ca­pac­ity. Hardware part­ners showed off wafer-thin lap­tops and com­pact desk­top boxes, tout­ing all-day bat­tery life un­der “mixed us­age,” which ac­cord­ing to in­ter­nal brief­ing ma­te­ri­als in­cludes read­ing PDFs, writ­ing emails, and very po­litely not ask­ing the ma­chine to do the thing it was pur­chased to do. “People want lo­cal AI for pri­vacy, speed, and con­trol,” said one Nvidia ex­ec­u­tive, tight­en­ing the back­pack’s car­bon-fiber ster­num strap be­fore launch­ing a 80-billion-parameter cod­ing as­sis­tant and caus­ing a nearby street­light to ex­plode. “If users no­tice warmth, vi­bra­tion, or a faint blue halo around the clav­i­cle area, that means the pre­mium ex­pe­ri­ence is work­ing.”

Nvidia stressed that the re­ac­tor pack is com­pletely safe in every­day sce­nar­ios, in­clud­ing spread­sheet work, im­age gen­er­a­tion, and light gam­ing, with the prod­uct safety guide list­ing only a few stan­dard pre­cau­tions while wear­ing the power pack: avoid punc­ture, avoid sub­mer­sion, and avoid sud­den move­ments such as sneez­ing or cough­ing. Early re­view­ers praised the sys­tem’s raw per­for­mance, call­ing it “the first Copilot+ PC that can run Crysis and per­ma­nently al­ter a pi­geon’s in­ter­nal com­pass.” Microsoft, for its part, said Spark rep­re­sents the fu­ture of per­sonal com­put­ing, then con­firmed Windows will greet first-time users with a cheer­ful setup an­i­ma­tion ask­ing whether they’d like to re­store from OneDrive or be­gin re­ac­tor cal­i­bra­tion.