Intel Cougar Cove (P), Darkmont (E) core architectures revealed in Panther Lake perfmon commit

An update by Intel to the perfmon platform has added support for upcoming Panther Lake CPUs, listing their core architecture codenames and CPUID, via InstLatX64. This commit unofficially confirms that Panther Lake will employ Cougar Cove Performance (P) cores, while Darkmont will serve to power its Efficiency (E), and likely Low Power Efficiency (LPE) cores as well. Panther Lake is expected to launch later this year, succeeding current-generation Arrow Lake U/H offerings.

With Intel’s flagship 18A in risk production, Panther Lake is scheduled for mass production later this year. Hence, it wouldn’t be surprising if the bulk of Panther Lake arrives in Q1 next year, similar to how Meteor Lake rolled out. Make no mistake: Panther Lake isn’t a successor to Lunar Lake, which was uniquely focused on efficiency as a one-off product, with on-package memory, limited TDP, and a power-optimized design. Current rumors indicate Panther Lake variants will sport up to 18 hybrid cores (6P+8E+4LPE) and 12 Xe cores, based on Intel’s upcoming Celestial (Xe3) graphics architecture.