Hyper-Threading suddenly becomes scarce, and the stunning 28-core chip is Xeon only.

Intel unveiled its 9th-generation Core desktop chips on Monday with the notable omission of a key feature: Hyper-Threading, at least on all but the most exclusive Core i9-9900K for mainstream PCs. Hyperthreading has also been reserved for a new iteration of Intel’s X-series processors, which includes up to 18 cores and 36 threads.

In a livestream Monday morning from its Fall Launch Event in New York, the company announced just a single Core i9 chip, the $488 Core i9-9900K, Later, the company privately revealed two others in the Core i7 and Core i5 families.

Intel also announced a new series of X-class chips for gamers, ranging from 8 cores and 16 threads through 18 cores and 36 threads. Prices will range from $589 to $1,979.

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